☆ 4.7 Article

QCD description of charmonium plus light meson production in (p)over-tilde-N annihilation

PHYSICS LETTERS B (2013)

期刊

PHYSICS LETTERS B

卷 724, 期 1-3, 页码 99-107

出版社

ELSEVIER SCIENCE BV

DOI: 10.1016/j.physletb.2013.06.015

关键词

-

类别

Astronomy & Astrophysics Physics, Nuclear Physics, Particles & Fields

资金

Polish Grant NCN [DEC-2011/01/D/ST2/03915]
Joint Research Activity Study of Strongly Interacting Matter (acronym HadronPhysics3, Grant) under the Seventh Framework Programme of the European Community [283286]
COPIN-IN2P3 Agreement

向作者/读者索取更多资源

Protocol

Reagent

摘要

The associated production of a J/psi and a pi meson in antiproton-nucleon annihilation is studied in the framework of QCD collinear factorization. In this approach, a hard subprocess responsible for the production of the heavy quark-antiquark pair factorizes from soft hadronic matrix elements, such as the antiproton (nucleon) distribution amplitude and the nucleon-to-pion (antiproton-to-pion) transition distribution amplitude. This reaction mechanism should dominate the forward and backward kinematical regions, where the cross sections are expected to be measurable in the set-up of the PANDA experiment at the GSI-FAIR facility. (C) 2013 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者

点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7

评分不足

次要评分

新颖性

-

重要性

-

科学严谨性

-

评价这篇论文

推荐

Review Multidisciplinary Sciences

Light meson physics at BESIII

Shuang-shi Fang

Summary: Studying light meson decays is essential for precision tests of effective field theories, determining transition form factors, and testing fundamental symmetries. The BESIII experiment, with its high statistics data samples, is a valuable laboratory for these investigations, contributing significantly to various studies in this field. Recent progress in light meson decay studies at BESIII includes detailed investigations into common decay dynamics and searches for rare/forbidden decays and new particles, as well as discussions on future prospects for studying light mesons using different experimental techniques.

NATIONAL SCIENCE REVIEW (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Excited doubly heavy baryon production via W+ boson decays

Peng-Hui Zhang, Lei Guo, Xu-Chang Zheng, Qi-Wei Ke

Summary: In this study, the decay widths of doubly heavy baryons were theoretically calculated using nonrelativistic QCD. The results show that the contribution from the P-wave is about one order lower than the S-wave. It is expected that a large number of doubly heavy baryon events will be produced at the LHC.

PHYSICAL REVIEW D (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Electroweak production of?Q1 states in e plus e- collisions: A brief review

N. N. Achasov, A. Kiselev, G. N. Shestakov

Summary: This article provides a brief review of the experimental and theoretical results on the production of thexQ1 states in e+e- annihilation and photon-photon yy* interactions. It highlights the importance of future data in improving theoretical predictions and reducing uncertainties.

PHYSICAL REVIEW D (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Study on ηc2 (ηb2) electromagnetic decay into double photons

Li Yang, Wen-Long Sang, Hong-Fei Zhang, Yu-Dong Zhang, Ming-Zhen Zhou

Summary: In this study, researchers calculated the helicity amplitude and decay width of eta(Q2) electromagnetic decay into two photons, confirming the validity of nonrelativistic QCD factorization at the D-wave quarkonium decay and finding significant corrections on the decay width. By evaluating the production cross section at LHCb, they estimated the number of events for eta(c2) and highlighted the challenging detection of eta(b2) due to its small branching ratio and production cross section.

PHYSICAL REVIEW D (2021)

添加到收藏夹

Review Multidisciplinary Sciences

Highlights of light meson spectroscopy at the BESIII experiment

Shan Jin, Xiaoyan Shen

Summary: Hadron spectroscopy is essential for understanding the dynamics of the strong interaction, especially in light hadron systems where experimental data play a crucial role in constraining theoretical models. The Beijing Spectrometer Experiment has been studying light meson spectroscopy for nearly three decades, providing unique opportunities to search for exotic states and conduct systematic studies of conventional light mesons.

NATIONAL SCIENCE REVIEW (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Semileptonic decay of Bc to ηc and J/ψ on the light front

Shuo Tang, Shaoyang Jia, Pieter Maris, James P. Vary

Summary: This study investigates the semileptonic decay of B-c(0(-)) to charmonia via the bottom-to-charm-quark electroweak current using basis light-front quantization. Weak transition form factors for decays into eta(c) or J/psi are calculated based on initial and final valence light-front wave functions, leading to differential decay width, branching ratios, and observations of unphysical frame dependence. A preferred set of frames is proposed for calculating these form factors based on analysis of the current component.

PHYSICAL REVIEW D (2021)

添加到收藏夹

Article Physics, Multidisciplinary

Quarkonium production in p plus p collisions at RHIC and LHC

Leszek Kosarzewski

Summary: This paper provides an overview of recent quarkonium production studies at RHIC and LHC, presenting experimental results and model calculations. The production mechanism of quarkonium remains unresolved, and further research and data are needed to understand it.

PHYSICA SCRIPTA (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Structure around p(p)over-bar threshold in J/ψ radiative decays

Qin-He Yang, Di Guo, Ling-Yun Dai

Summary: This paper investigates the structure around the p (p) over bar threshold observed in the eta 'pi(+) pi(-), 3(pi(+) pi(-)), and (KSKS0)-K-0 eta invariant mass spectra of relevant J/psi radiative decays. The study includes the N (N) over bar rescattering and applies the distorted-wave Born approximation to calculate the decaying amplitude. The scattering amplitudes of N (N) over bar are obtained through solving the Lippmann-Schwinger equation with potentials from chiral effective field theory.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Evidence for B0 → p(Σ)over-bar0π- at Belle

C. -Y. Chang, M. -Z. Wang, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, Sw. Banerjee, M. Bauer, P. Behera, K. Belous, J. Bennett, F. Bernlochner, M. Bessner, T. Bilka, D. Biswas, A. Bobrov, D. Bodrov, G. Bonvicini, J. Borah, A. Bozek, M. Bracko, P. Branchini, T. E. Browder, A. Budano, M. Campajola, L. Cao, D. Cervenkov, M. -C. Chang, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. -J. Cho, S. -K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Das, G. De Nardo, G. De Pietro, R. Dhamija, F. Di Capua, Z. Dolezal, T. V. Dong, S. Dubey, P. Ecker, T. Ferber, D. Ferlewicz, B. G. Fulsom, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, E. Graziani, T. Gu, Y. Guan, K. Gudkova, C. Hadjivasiliou, S. Halder, T. Hara, K. Hayasaka, H. Hayashii, S. Hazra, M. T. Hedges, D. Herrmann, W. -S. Hou, C. -L. Hsu, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, K. K. Joo, A. B. Kaliyar, T. Kawasaki, C. Kiesling, C. H. Kim, D. Y. Kim, K. -H. Kim, Y. -K. Kim, K. Kinoshita, P. Kodys, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, P. Krizan, P. Krokovny, T. Kuhr, M. Kumar, K. Kumara, A. Kuzmin, Y. -J. Kwon, Y. -T. Lai, T. Lam, M. Laurenza, S. C. Lee, D. Levit, L. K. Li, L. Li Gioi, J. Libby, K. Lieret, Y. -R. Lin, D. Liventsev, Y. Ma, M. Masuda, D. Matvienko, S. K. Maurya, F. Meier, M. Merola, F. Metzner, R. Mizuk, R. Mussa, I. Nakamura, M. Nakao, A. Natochii, L. Nayak, N. K. Nisar, S. Nishida, K. Ogawa, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, S. Pardi, J. Park, S. -H. Park, A. Passeri, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, E. Prencipe, M. T. Prim, N. Rout, G. Russo, S. Sandilya, A. Sangal, L. Santelj, V. Savinov, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, W. Shan, M. Shapkin, C. Sharma, J. -G. Shiu, J. B. Singh, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, M. Sumihama, W. Sutcliffe, M. Takizawa, K. Tanida, F. Tenchini, R. Tiwary, K. Trabelsi, M. Uchida, Y. Unno, S. Uno, Y. Usov, S. E. Vahsen, G. Varner, K. E. Varvell, D. Wang, E. Wang, S. Watanuki, O. Werbycka, E. Won, B. D. Yabsley, W. Yan, S. B. Yang, J. H. Yin, C. Z. Yuan, L. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova

Summary: In this study, we measured for the first time the branching fraction of B-0 -> p (Sigma) over bar (0)pi(-) and the related channel with improved precision using a large dataset and high resolution experiments.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Physics, Particles & Fields

Dark effects in (f)over-tilde (R, P) gravity

Mihai Marciu

Summary: In this paper, a new cosmological model is proposed by extending the Einstein-Hilbert Lagrangian with a specific functional, exploring the effects of the generic functional on cosmological solutions. The study utilizes a specific method of dynamical system analysis to reveal fundamental properties of the phase space structure and discuss the dynamical consequences of cosmological solutions.

EUROPEAN PHYSICAL JOURNAL C (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Production of D-wave states of (b)over-barc quarkonium at the LHC

A. Berezhnoy, N. Belov, A. K. Likhoded

Summary: The study focuses on the hadronic production of D-wave states of (b) over barc quarkonium, estimating the relative yield of such states under kinematic conditions of LHC experiments.

PHYSICAL REVIEW D (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Search for the rare hadronic decay Bs0 → p(p)over-bar

R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinen, T. Ackernley, B. Adeva, M. Adinolfi, P. Adlarson, H. Afsharnia, C. Agapopoulou, C. A. Aidala, Z. Ajaltouni, S. Akar, K. Akiba, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero, Z. Aliouche, P. Alvarez Cartelle, R. Amalric, S. Amato, J. L. Amey, Y. Amhis, L. An, L. Anderlini, M. Andersson, A. Andreianov, M. Andreotti, D. Andreou, D. Ao, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, M. Atzeni, B. Audurier, S. Bachmann, M. Bachmayer, J. J. Back, A. Bailly-reyre, P. Baladron Rodriguez, V. Balagura, W. Baldini, J. Baptista de Souza Leite, M. Barbetti, R. J. Barlow, S. Barsuk, W. Barter, M. Bartolini, F. Baryshnikov, J. M. Basels, G. Bassi, B. Batsukh, A. Battig, A. Bay, A. Beck, M. Becker, F. Bedeschi, I. B. Bediaga, A. Beiter, V. Belavin, S. Belin, V. Bellee, K. Belous, I. Belov, I. Belyaev, G. Benane, G. Bencivenni, E. Ben-Haim, A. Berezhnoy, R. Bernet, S. Bernet Andres, D. Berninghoff, H. C. Bernstein, C. Bertella, A. Bertolin, C. Betancourt, F. Betti, Ia. Bezshyiko, S. Bhasin, J. Bhom, L. Bian, M. S. Bieker, N. V. Biesuz, S. Bifani, P. Billoir, A. Biolchini, M. Birch, F. C. R. Bishop, A. Bitadze, A. Bizzeti, M. P. Blago, T. Blake, F. Blanc, J. E. Blank, S. Blusk, D. Bobulska, J. A. Boelhauve, O. Boente Garcia, T. Boettcher, A. Boldyrev, C. S. Bolognani, R. Bolzonella, N. Bondar, F. Borgato, S. Borghi, M. Borsato, J. T. Borsuk, S. A. Bouchiba, T. J. V. Bowcock, A. Boyer, C. Bozzi, M. J. Bradley, S. Braun, A. Brea Rodriguez, J. Brodzicka, A. Brossa Gonzalo, J. Brown, D. Brundu, A. Buonaura, L. Buonincontri, A. T. Burke, C. Burr, A. Bursche, A. Butkevich, J. S. Butter, J. Buytaert, W. Byczynski, S. Cadeddu, H. Cai, R. Calabrese, L. Calefice, S. Cali, R. Calladine, M. Calvi, M. Calvo Gomez, P. Campana, D. H. Campora Perez, A. F. Campoverde Quezada, S. Capelli, L. Capriotti, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, P. Carniti, L. Carus, A. Casais Vidal, R. Caspary, G. Casse, M. Cattaneo, G. Cavallero, V. Cavallini, S. Celani, J. Cerasoli, D. Cervenkov, A. J. Chadwick, M. G. Chapman, M. Charles, Ph. Charpentier, C. A. Chavez Barajas, M. Chefdeville, C. Chen, S. Chen, A. Chernov, S. Chernyshenko, V. Chobanova, S. Cholak, M. Chrzaszcz, A. Chubykin, V. Chulikov, P. Ciambrone, M. F. Cicala, X. Cid Vidal, G. Ciezarek, G. Ciullo, P. E. L. Clarke, M. Clemencic, H. V. Cliff, J. Closier, J. L. Cobbledick, V. Coco, J. A. B. Coelho, J. Cogan, E. Cogneras, L. Cojocariu, P. Collins, T. Colombo, L. Congedo, A. Contu, N. Cooke, I. Corredoira, G. Corti, B. Couturier, D. C. Craik, M. Cruz Torres, R. Currie, C. L. Da Silva, S. Dadabaev, L. Dai, X. Dai, E. Dall'Occo, J. Dalseno, C. D'Ambrosio, J. Daniel, A. Danilina, P. d'Argent, J. E. Davies, A. Davis, O. De Aguiar Francisco, J. de Boer, K. De Bruyn, S. De Capua, M. De Cian, U. De Freitas Carneiro Da Graca, E. De Lucia, J. M. De Miranda, L. De Paula, M. De Serio, D. De Simone, P. De Simone, F. De Vellis, J. A. de Vries, C. T. Dean, F. Debernardis, D. Decamp, V. Dedu, L. Del Buono, B. Delaney, H-P Dembinski, V. Denysenko, O. Deschamps, F. Dettori, B. Dey, P. Di Nezza, I. Diachkov, S. Didenko, L. Dieste Maronas, S. Ding, V. Dobishuk, A. Dolmatov, C. Dong, A. M. Donohoe, F. Dordei, A. C. dos Reis, L. Douglas, A. G. Downes, P. Duda, M. W. Dudek, L. Dufour, V. Duk, P. Durante, M. M. Duras, J. M. Durham, D. Dutta, A. Dziurda, A. Dzyuba, S. Easo, U. Egede, V. Egorychev, S. Eidelman, C. Eirea Orro, S. Eisenhardt, E. Ejopu, S. Ek-In, L. Eklund, S. Ely, A. Ene, E. Epple, S. Escher, J. Eschle, S. Esen, T. Evans, F. Fabiano, L. N. Falcao, Y. Fan, B. Fang, L. Fantini, M. Faria, S. Farry, D. Fazzini, L. F. Felkowski, M. Feo, M. Fernandez Gomez, A. D. Fernez, F. Ferrari, L. Ferreira Lopes, F. Ferreira Rodrigues, S. Ferreres Sole, M. Ferrillo, M. Ferro-Luzzi, S. Filippov, R. A. Fini, M. Fiorini, M. Firlej, K. M. Fischer, D. S. Fitzgerald, C. Fitzpatrick, T. Fiutowski, F. Fleuret, M. Fontana, F. Fontanelli, R. Forty, D. Foulds-Holt, V. Franco Lima, M. Franco Sevilla, M. Frank, E. Franzoso, G. Frau, C. Frei, D. A. Friday, J. Fu, Q. Fuehring, T. Fulghesu, E. Gabriel, G. Galati, M. D. Galati, A. Gallas Torreira, D. Galli, S. Gambetta, Y. Gan, M. Gandelman, P. Gandini, Y. Gao, M. Garau, L. M. Garcia Martin, P. Garcia Moreno, J. Garcia Pardinas, B. Garcia Plana, F. A. Garcia Rosales, L. Garrido, C. Gaspar, R. E. Geertsema, D. Gerick, L. L. Gerken, E. Gersabeck, M. Gersabeck, T. Gershon, L. Giambastiani, V. Gibson, H. K. Giemza, A. L. Gilman, M. Giovannetti, A. Gioventu, P. Gironella Gironell, C. Giugliano, M. A. Giza, K. Gizdov, E. L. Gkougkousis, V. V. Gligorov, C. Gobel, E. Golobardes, D. Golubkov, A. Golutvin, A. Gomes, S. Gomez Fernandez, F. Goncalves Abrantes, M. Goncerz, G. Gong, I. V. Gorelov, C. Gotti, J. P. Grabowski, T. Grammatico, L. A. Granado Cardoso, E. Grauges, E. Graverini, G. Graziani, A. T. Grecu, L. M. Greeven, N. A. Grieser, L. Grillo, S. Gromov, B. R. Gruberg Cazon, C. Gu, M. Guarise, M. Guittiere, P. A. Guenther, E. Gushchin, A. Guth, Y. Guz, T. Gys, T. Hadavizadeh, C. Hadjivasiliou, G. Haefeli, C. Haen, J. Haimberger, S. C. Haines, T. Halewood-leagas, M. M. Halvorsen, P. M. Hamilton, J. Hammerich, Q. Han, X. Han, E. B. Hansen, S. Hansmann-Menzemer, L. Hao, N. Harnew, T. Harrison, C. Hasse, M. Hatch, J. He, K. Heijhoff, C. Henderson, R. D. L. Henderson, A. M. Hennequin, K. Hennessy, L. Henry, J. Herd, J. Heuel, A. Hicheur, D. Hill, M. Hilton, S. E. Hollitt, J. Horswill, R. Hou, Y. Hou, J. Hu, J. Hu, W. Hu, X. Hu, W. Huang, X. Huang, W. Hulsbergen, R. J. Hunter, M. Hushchyn, D. Hutchcroft, P. Ibis, M. Idzik, D. Ilin, P. Ilten, A. Inglessi, A. Iniukhin, A. Ishteev, K. Ivshin, R. Jacobsson, H. Jage, S. J. Jaimes Elles, S. Jakobsen, E. Jans, B. K. Jashal, A. Jawahery, V. Jevtic, E. Jiang, X. Jiang, Y. Jiang, M. John, D. Johnson, C. R. Jones, T. P. Jones, B. Jost, N. Jurik, I. Juszczak, S. Kandybei, Y. Kang, M. Karacson, D. Karpenkov, M. Karpov, J. W. Kautz, F. Keizer, D. M. Keller, M. Kenzie, T. Ketel, B. Khanji, A. Kharisova, S. Kholodenko, G. Khreich, T. Kirn, V. S. Kirsebom, O. Kitouni, S. Klaver, N. Kleijne, K. Klimaszewski, M. R. Kmiec, S. Koliiev, A. Kondybayeva, A. Konoplyannikov, P. Kopciewicz, R. Kopecna, P. Koppenburg, M. Korolev, I. Kostiuk, O. Kot, S. Kotriakhova, A. Kozachuk, P. Kravchenko, L. Kravchuk, R. D. Krawczyk, M. Kreps, S. Kretzschmar, P. Krokovny, W. Krupa, W. Krzemien, J. Kubat, S. Kubis, W. Kucewicz, M. Kucharczyk, V. Kudryavtsev, A. Kupsc, D. Lacarrere, G. Lafferty, A. Lai, A. Lampis, D. Lancierini, C. Landesa Gomez, J. J. Lane, R. Lane, G. Lanfranchi, C. Langenbruch, J. Langer, O. Lantwin, T. Latham, F. Lazzari, M. Lazzaroni, R. Le Gac, S. H. Lee, R. Lefevre, A. Leflat, S. Legotin, P. Lenisa, O. Leroy, T. Lesiak, B. Leverington, A. Li, H. Li, K. Li, P. Li, P-R Li, S. Li, Y. Li, Z. Li, X. Liang, C. Lin, T. Lin, R. Lindner, V. Lisovskyi, R. Litvinov, G. Liu, H. Liu, Q. Liu, S. Liu, A. Lobo Salvia, A. Loi, R. Lollini, J. Lomba Castro, I. Longstaff, J. H. Lopes, A. Lopez Huertas, S. Lopez Solino, G. H. Lovell, Y. Lu, C. Lucarelli, D. Lucchesi, S. Luchuk, M. Lucio Martinez, V. Lukashenko, Y. Luo, A. Lupato, E. Luppi, A. Lusiani, K. Lynch, X. -R. Lyu, L. Ma, R. Ma, S. Maccolini, F. Machefert, F. Maciuc, I. Mackay, V. Macko, P. Mackowiak, L. R. Madhan Mohan, A. Maevskiy, D. Maisuzenko, M. W. Majewski, J. J. Malczewski, S. Malde, B. Malecki, A. Malinin, T. Maltsev, G. Manca, G. Mancinelli, C. Mancuso, D. Manuzzi, C. A. Manzari, D. Marangotto, J. F. Marchand, U. Marconi, S. Mariani, C. Marin Benito, J. Marks, A. M. Marshall, P. J. Marshall, G. Martelli, G. Martellotti, L. Martinazzoli, M. Martinelli, D. Martinez Santos, F. Martinez Vidal, A. Massafferri, M. Materok, R. Matev, A. Mathad, V. Matiunin, C. Matteuzzi, K. R. Mattioli, A. Mauri, E. Maurice, J. Mauricio, M. Mazurek, M. McCann, L. Mcconnell, T. H. McGrath, N. T. McHugh, A. McNab, R. McNulty, J. V. Mead, B. Meadows, G. Meier, D. Melnychuk, S. Meloni, M. Merk, A. Merli, L. Meyer Garcia, D. Miao, M. Mikhasenko, D. A. Milanes, E. Millard, M. Milovanovic, M. -N. Minard, A. Minotti, T. Miralles, S. E. Mitchell, B. Mitreska, D. S. Mitzel, A. Moedden, R. A. Mohammed, R. D. Moise, S. Mokhnenko, T. Mombacher, M. Monk, I. A. Monroy, S. Monteil, M. Morandin, G. Morello, M. J. Morello, J. Moron, A. B. Morris, A. G. Morris, R. Mountain, H. Mu, E. Muhammad, F. Muheim, M. Mulder, K. Mueller, C. H. Murphy, D. Murray, R. Murta, P. Muzzetto, P. Naik, T. Nakada, R. Nandakumar, T. Nanut, I. Nasteva, M. Needham, N. Neri, S. Neubert, N. Neufeld, P. Neustroev, R. Newcombe, J. Nicolini, E. M. Niel, S. Nieswand, N. Nikitin, N. S. Nolte, C. Normand, J. Novoa Fernandez, C. Nunez, A. Oblakowska-Mucha, V. Obraztsov, T. Oeser, D. P. O'Hanlon, S. Okamura, R. Oldeman, F. Oliva, C. J. G. Onderwater, R. H. O'Neil, J. M. Otalora Goicochea, T. Ovsiannikova, P. Owen, A. Oyanguren, O. Ozcelik, K. O. Padeken, B. Pagare, P. R. Pais, T. Pajero, A. Palano, M. Palutan, Y. Pan, G. Panshin, L. Paolucci, A. Papanestis, M. Pappagallo, L. L. Pappalardo, C. Pappenheimer, W. Parker, C. Parkes, B. Passalacqua, G. Passaleva, A. Pastore, M. Patel, C. Patrignani, C. J. Pawley, A. Pearce, A. Pellegrino, M. Pepe Altarelli, S. Perazzini, D. Pereima, A. Pereiro Castro, P. Perret, M. Petric, K. Petridis, A. Petrolini, A. Petrov, S. Petrucci, M. Petruzzo, H. Pham, A. Philippov, R. Piandani, L. Pica, M. Piccini, B. Pietrzyk, G. Pietrzyk, M. Pili, D. Pinci, F. Pisani, M. Pizzichemi, V. Placinta, J. Plews, M. Plo Casasus, F. Polci, M. Poli Lener, M. Poliakova, A. Poluektov, N. Polukhina, I. Polyakov, E. Polycarpo, S. Ponce, D. Popov, S. Popov, S. Poslavskii, K. Prasanth, L. Promberger, C. Prouve, V. Pugatch, V. Puill, G. Punzi, H. R. Qi, W. Qian, N. Qin, S. Qu, R. Quagliani, N. V. Raab, R. I. Rabadan Trejo, B. Rachwal, J. H. Rademacker, R. Rajagopalan, M. Rama, M. Ramos Pernas, M. S. Rangel, F. Ratnikov, G. Raven, M. Rebollo De Miguel, F. Redi, J. Reich, F. Reiss, C. Remon Alepuz, Z. Ren, P. K. Resmi, R. Ribatti, A. M. Ricci, S. Ricciardi, K. Richardson, M. Richardson-Slipper, K. Rinnert, P. Robbe, G. Robertson, A. B. Rodrigues, E. Rodrigues, E. Rodriguez Fernandez, J. A. Rodriguez Lopez, E. Rodriguez Rodriguez, D. L. Rolf, A. Rollings, P. Roloff, V. Romanovskiy, M. Romero Lamas, A. Romero Vidal, J. D. Roth, M. Rotondo, M. S. Rudolph, T. Ruf, R. A. Ruiz Fernandez, J. Ruiz Vidal, A. Ryzhikov, J. Ryzka, J. J. Saborido Silva, N. Sagidova, N. Sahoo, B. Saitta, M. Salomoni, C. Sanchez Gras, I. Sanderswood, R. Santacesaria, C. Santamarina Rios, M. Santimaria, E. Santovetti, D. Saranin, G. Sarpis, M. Sarpis, A. Sarti, C. Satriano, A. Satta, M. Saur, D. Savrina, H. Sazak, L. G. Scantlebury Smead, A. Scarabotto, S. Schael, S. Scherl, M. Schiller, H. Schindler, M. Schmelling, B. Schmidt, S. Schmitt, O. Schneider, A. Schopper, M. Schubiger, S. Schulte, M. H. Schune, R. Schwemmer, B. Sciascia, A. Sciuccati, S. Sellam, A. Semennikov, M. Senghi Soares, A. Sergi, N. Serra, L. Sestini, A. Seuthe, Y. Shang, D. M. Shangase, M. Shapkin, I. Shchemerov, L. Shchutska, T. Shears, L. Shekhtman, Z. Shen, S. Sheng, V. Shevchenko, B. Shi, E. B. Shields, Y. Shimizu, E. Shmanin, R. Shorkin, J. D. Shupperd, B. G. Siddi, R. Silva Coutinho, G. Simi, S. Simone, M. Singla, N. Skidmore, R. Skuza, T. Skwarnicki, M. W. Slater, J. C. Smallwood, J. G. Smeaton, E. Smith, K. Smith, M. Smith, A. Snoch, L. Soares Lavra, M. D. Sokoloff, F. J. P. Soler, A. Solomin, A. Solovev, I. Solovyev, R. Song, F. L. Souza De Almeida, B. Souza De Paula, B. Spaan, E. Spadaro Norella, E. Spedicato, E. Spiridenkov, P. Spradlin, V. Sriskaran, F. Stagni, M. Stahl, S. Stahl, S. Stanislaus, E. N. Stein, O. Steinkamp, O. Stenyakin, H. Stevens, S. Stone, D. Strekalina, Y. S. Su, F. Suljik, J. Sun, L. Sun, Y. Sun, P. Svihra, P. N. Swallow, K. Swientek, A. Szabelski, T. Szumlak, M. Szymanski, Y. Tan, S. Taneja, M. D. Tat, A. Terentev, F. Teubert, E. Thomas, D. J. D. Thompson, K. A. Thomson, H. Tilquin, V. Tisserand, S. T'Jampens, M. Tobin, L. Tomassetti, G. Tonani, X. Tong, D. Torres Machado, D. Y. Tou, S. M. Trilov, C. Trippl, G. Tuci, A. Tully, N. Tuning, A. Ukleja, D. J. Unverzagt, A. Usachov, A. Ustyuzhanin, U. Uwer, A. Vagner, V. Vagnoni, A. Valassi, G. Valenti, N. Valls Canudas, M. van Beuzekom, M. Van Dijk, H. Van Hecke, E. van Herwijnen, C. B. Van Hulse, M. van Veghel, R. Vazquez Gomez, P. Vazquez Regueiro, C. Vazquez Sierra, S. Vecchi, J. J. Velthuis, M. Veltri, A. Venkateswaran, M. Veronesi, M. Vesterinen, D. Vieira, M. Vieites Diaz, X. Vilasis-Cardona, E. Vilella Figueras, A. Villa, P. Vincent, F. C. Volle, D. vom Bruch, A. Vorobyev, V. Vorobyev, N. Voropaev, K. Vos, C. Vrahas, R. Waldi, J. Walsh, G. Wan, C. Wang, G. Wang, J. Wang, J. Wang, J. Wang, J. Wang, M. Wang, R. Wang, X. Wang, Y. Wang, Z. Wang, Z. Wang, Z. Wang, J. A. Ward, N. K. Watson, D. Websdale, Y. Wei, C. Weisser, B. D. C. Westhenry, D. J. White, M. Whitehead, A. R. Wiederhold, D. Wiedner, G. Wilkinson, M. K. Wilkinson, I. Williams, M. Williams, M. R. J. Williams, R. Williams, F. F. Wilson, W. Wislicki, M. Witek, L. Witola, C. P. Wong, G. Wormser, S. A. Wotton, H. Wu, J. Wu, K. Wyllie, Z. Xiang, D. Xiao, Y. Xie, A. Xu, J. Xu, L. Xu, M. Xu, Q. Xu, Z. Xu, Z. Xu, D. Yang, S. Yang, X. Yang, Y. Yang, Z. Yang, Z. Yang, L. E. Yeomans, V. Yeroshenko, H. Yeung, H. Yin, J. Yu, X. Yuan, E. Zaffaroni, M. Zavertyaev, M. Zdybal, O. Zenaiev, M. Zeng, C. Zhang, D. Zhang, L. Zhang, S. Zhang, S. Zhang, Y. Zhang, Y. Zhang, A. Zharkova, A. Zhelezov, Y. Zheng, T. Zhou, X. Zhou, Y. Zhou, V. Zhovkovska, X. Zhu, X. Zhu, Z. Zhu, V. Zhukov, Q. Zou, S. Zucchelli, D. Zuliani, G. Zunica

Summary: The LHCb experiment searched for the rare hadronic decay Bs(0) -> p(p) over bar using proton-proton collision data, and found evidence for the B-0 -> p (p) over bar decay mode. The branching fraction for this decay was determined, and an upper limit was set for the Bs(0) -> p (p) over bar decay.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Dispersive analysis of glueball masses

Hsiang-nan Li

Summary: An inverse matrix method is developed to solve resonance masses from a dispersion relation obeyed by a correlation function. The nonperturbative spectral density obtained exhibits resonance structures naturally. The analysis reveals characteristics of different glueballs and proposes a mixing framework including gluonium components for certain mesons.

PHYSICAL REVIEW D (2021)

添加到收藏夹

Article Physics, Nuclear

Cross sections for inelastic K plus φ scattering

Yi-Hao Pan, Xiao-Ming Xu

Summary: This study investigates the reactions K phi -> pi K, rho K, pi K*, and rho K* using the Born approximation and considering quark-antiquark annihilation and creation. Transition amplitudes are obtained by expanding the relative-motion wave functions of initial and final mesons in spherical harmonics, ensuring the conservation of parity and total angular momentum. Unpolarized cross sections, which are calculated from the transition amplitudes, exhibit a significant temperature dependence. While the cross sections for K phi -> rho K, K phi -> pi K*, and K phi -> rho K* may reach the millibarn scale, the cross section for K phi -> K pi is small.

CHINESE PHYSICS C (2023)

添加到收藏夹

Article Physics, Particles & Fields

Heavy plus heavy and heavy plus light pseudoscalar to vector semileptonic transitions

Hui-Yu Xing, Zhen-Ni Xu, Zhu-Fang Cui, Craig D. Roberts, Chang Xu

Summary: The study provides a systematic treatment of twelve semileptonic transitions using a symmetry-preserving regularisation, showing strong consistency between SCI results and experimental or independent theory analyses. The predictions of branching fractions by SCI are considered reasonable guides, and effects on transition form factors from emergent hadron mass are also highlighted.

EUROPEAN PHYSICAL JOURNAL C (2022)

添加到收藏夹

Review Physics, Nuclear

Science Requirements and Detector Concepts for the Electron-Ion Collider

R. Abdul Khalek, A. Accardi, J. Adam, D. Adamiak, W. Akers, M. Albaladejo, A. Al-bataineh, M. G. Alexeev, F. Ameli, P. Antonioli, N. Armesto, W. R. Armstrong, M. Arratia, J. Arrington, A. Asaturyan, M. Asai, E. C. Aschenauer, S. Aune, H. Avagyan, C. Ayerbe Gayoso, B. Azmoun, A. Bacchetta, M. D. Baker, F. Barbosa, L. Barion, K. N. Barish, P. C. Barry, M. Battaglieri, A. Bazilevsky, N. K. Behera, F. Benmokhtar, V. V. Berdnikov, J. C. Bernauer, V Bertone, S. Bhattacharya, C. Bissolotti, D. Boer, M. Boglione, P. Boora, I Borsa, F. Bossu, G. Bozzi, J. D. Brandenburg, N. Brei, A. Bressan, W. K. Brooks, S. Bufalino, M. H. S. Bukhari, V Burkert, N. H. Buttimore, A. Camsonne, A. Celentano, F. G. Celiberto, W. Chang, C. Chatterjee, K. Chen, T. Chetry, T. Chiarusi, Y-T Chien, M. Chiosso, X. Chu, E. Chudakov, G. Cicala, E. Cisbani, I. C. Cloet, C. Cocuzza, P. L. Cole, D. Colella, J. L. Collins, M. Constantinou, M. Contalbrigo, G. Contin, R. Corliss, W. Cosyn, A. Courtoy, J. Crafts, R. Cruz-Torres, R. C. Cuevas, U. D'Alesio, S. Dalla Torre, D. Das, S. S. Dasgupta, C. Da Silva, W. Deconinck, M. Defurne, W. DeGraw, K. Dehmelt, A. Del Dotto, F. Delcarro, A. Deshpande, W. Detmold, R. De Vita, M. Diefenthaler, C. Dilks, D. U. Dixit, S. Dulat, A. Dumitru, J. M. Durham, M. G. Echevarria, L. El Fassi, D. Elia, R. Ent, R. Esha, J. J. Ethier, O. Evdokimov, K. O. Eyser, C. Fanelli, R. Fatemi, S. Fazio, C. Fernandez-Ramirez, M. Finger, M. Jr Finger Jr, D. Fitzgerald, C. Flore, T. Frederico, I Friscic, S. Fucini, S. Furletov, Y. Furletova, C. Gal, L. Gamberg, H. Gao, P. Garg, D. Gaskell, K. Gates, M. B. Gay Ducati, M. Gericke, G. Gil Da Silveira, F-X Girod, D. Glazier, K. Gnanvo, V. P. Goncalves, L. Gonella, J. O. Gonzalez Hernandez, Y. Goto, F. Grancagnolo, L. C. Greiner, W. Guryn, V Guzey, Y. Hatta, M. Hattawy, F. Hauenstein, X. He, T. K. Hemmick, O. Hen, G. Heyes, D. W. Higinbotham, A. N. Hiller Blin, T. J. Hobbs, M. Hohlmann, T. Horn, T-J Hou, J. Huang, Q. Huang, G. M. Huber, C. E. Hyde, G. Iakovidis, Y. Ilieva, B. Jacak, P. M. Jacobs, M. Jadhav, Z. Janoska, A. Jentsch, T. Jezo, X. Jing, P. G. Jones, K. Joo, S. Joosten, V Kafka, N. Kalantarians, G. Kalicy, D. Kang, Z. B. Kang, K. Kauder, S. J. D. Kay, C. E. Keppel, J. Kim, A. Kiselev, M. Klasen, S. Klein, H. T. Klest, O. Korchak, A. Kostina, P. Kotko, Y. Kovchegov, M. Krelina, S. Kuleshov, S. Kumano, K. S. Kumar, R. Kumar, L. Kumar, K. Kumericki, A. Kusina, K. Kutak, Y. S. Lai, K. Lalwani, T. Lappi, J. Lauret, M. Lavinsky, D. Lawrence, D. Lednicky, C. Lee, K. Lee, S. H. Lee, S. Levorato, H. Li, S. Li, W. Li, X. Li, X. Li, W. B. Li, T. Ligonzo, H. Liu, M. X. Liu, X. Liu, S. Liuti, N. Liyanage, Z. Lu, G. Lucero, N. S. Lukow, E. Lunghi, R. Majka, Y. Makris, I Mandjavidze, S. Mantry, H. Mantysaari, F. Marhauser, P. Markowitz, L. Marsicano, A. Mastroserio, V Mathieu, Y. Mehtar-Tani, W. Melnitchouk, L. Mendez, A. Metz, Z-E Meziani, C. Mezrag, M. Mihovilovic, R. Milner, M. Mirazita, H. Mkrtchyan, A. Mkrtchyan, V Mochalov, V Moiseev, M. M. Mondal, A. Morreale, D. Morrison, L. Motyka, H. Moutarde, F. Murgia, M. J. Murray, P. Musico, P. Nadel-Turonski, P. M. Nadolsky, J. Nam, P. R. Newman, D. Neyret, D. Nguyen, E. R. Nocera, F. Noferini, F. Noto, A. S. Nunes, V. A. Okorokov, F. Olness, J. D. Osborn, B. S. Page, S. Park, A. Parker, K. Paschke, B. Pasquini, H. Paukkunen, S. Paul, C. Pecar, I. L. Pegg, C. Pellegrino, C. Peng, L. Pentchev, R. Perrino, F. Petriello, R. Petti, A. Pilloni, C. Pinkenburg, B. Pire, C. Pisano, D. Pitonyak, A. A. Poblaguev, T. Polakovic, M. Posik, M. Potekhin, R. Preghenella, S. Preins, A. Prokudin, P. Pujahari, M. L. Purschke, J. R. Pybus, M. Radici, R. Rajput-Ghoshal, P. E. Reimer, M. Rinaldi, F. Ringer, C. D. Roberts, S. Rodini, J. Rojo, D. Romanov, P. Rossi, E. Santopinto, M. Sarsour, R. Sassot, N. Sato, B. Schenke, W. B. Schmidke, I Schmidt, A. Schmidt, B. Schmookler, G. Schnell, P. Schweitzer, J. Schwiening, I Scimemi, S. Scopetta, J. Segovia, R. Seidl, S. Sekula, K. Semenov-Tian-Shanskiy, D. Y. Shao, N. Sherrill, E. Sichtermann, M. Siddikov, A. Signori, B. K. Singh, S. Sirca, K. Slifer, W. Slominski, D. Sokhan, W. E. Sondheim, Y. Song, O. Soto, H. Spiesberger, A. M. Stasto, P. Stepanov, G. Sterman, J. R. Stevens, I. W. Stewart, I Strakovsky, M. Strikman, M. Sturm, M. L. Stutzman, M. Sullivan, B. Surrow, P. Svihra, S. Syritsyn, A. Szczepaniak, P. Sznajder, H. Szumila-Vance, L. Szymanowski, A. S. Tadepalli, J. D. Tapia Takaki, G. F. Tassielli, J. Terry, F. Tessarotto, K. Tezgin, L. Tomasek, F. Torales Acosta, P. Tribedy, A. Tricoli, Triloki, S. Tripathi, R. L. Trotta, O. D. Tsai, Z. Tu, C. Tuve, T. Ullrich, M. Ungaro, G. M. Urciuoli, A. Valentini, P. Vancura, M. Vandenbroucke, C. Van Hulse, G. Varner, R. Venugopalan, I Vitev, A. Vladimirov, G. Volpe, A. Vossen, E. Voutier, J. Wagner, S. Wallon, H. Wang, Q. Wang, X. Wang, S. Y. Wei, C. Weiss, T. Wenaus, H. Wennlof, N. Wickramaarachchi, A. Wikramanayake, D. Winney, C. P. Wong, C. Woody, L. Xia, B. W. Xiao, J. Xie, H. Xing, Q. H. Xu, J. Zhang, S. Zhang, Z. Zhang, Z. W. Zhao, Y. X. Zhao, L. Zheng, Y. Zhou, P. Zurita

Summary: This report describes the physics case, detector requirements, and evolving detector concepts for the Electron-Ion Collider (EIC) experimental program. The EIC will be a new facility in the United States with the capability to collide high-energy electron beams with high-energy proton and ion beams, providing access to regions dominated by gluons. The use of polarized beams in the EIC will allow for unprecedented access to the spatial and spin structure of particles. The report aims to advance the physics program and develop detector concepts that meet the requirements for the EIC.

NUCLEAR PHYSICS A (2022)

添加到收藏夹

Article Physics, Particles & Fields

Accessing chiral-even quark generalised parton distributions in the exclusive photoproduction of a γπ± pair with large invariant mass in both fixed-target and collider experiments

Goran Duplancic, Saad Nabeebaccus, Kornelija Passek-Kumericki, Bernard Pire, Lech Szymanowski, Samuel Wallon

Summary: We calculate the exclusive photoproduction of a gamma pi(+/-) pair using the collinear factorisation framework, in a regime where the pair has a large invariant mass and the meson has a sufficiently large transverse momentum to avoid resonance with the outgoing nucleon. This process provides a new avenue for studying Generalized Parton Distributions (GPDs), particularly at small skewness xi, due to the high center-of-mass energies available at future experiments. By computing the scattering amplitude at leading twist and leading order in alpha(s), we estimate the cross-section and linear polarisation asymmetries for various kinematics at JLab 12-GeV, COMPASS, future EIC, and LHC (in ultra-peripheral collisions). Our results suggest that the magnitudes of the estimates are large enough to warrant dedicated experimental analysis, especially at JLab. We also compare the results obtained using an asymptotic distribution amplitude (DA) with those obtained using a recently proposed holographic DA.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

添加到收藏夹

Review Physics, Nuclear

Precision studies of QCD in the low energy domain of the EIC

V. D. Burkert, L. Elouadrhiri, A. Afanasev, J. Arrington, M. Contalbrigo, W. Cosyn, A. Deshpande, D. I. Glazier, X. Ji, S. Liuti, Y. Oh, D. Richards, T. Satogata, A. Vossen, H. Abdolmaleki, A. Albataineh, C. A. Aidala, C. Alexandrou, H. Avagyan, A. Bacchetta, M. Baker, F. Benmokhtar, J. C. Bernauer, C. Bissolotti, W. Briscoe, D. Byers, Xu Cao, C. E. Carlson, K. Cichy, I. C. Cloet, C. Cocuzza, P. L. Cole, M. Constantinou, A. Courtoy, H. Dahiyah, K. Dehmelt, S. Diehl, C. Dilks, C. Djalali, R. Dupre, S. C. Dusa, B. El-Bennich, L. El Fassi, T. Frederico, A. Freese, B. R. Gamage, L. Gamberg, R. R. Ghoshal, F. X. Girod, V. P. Goncalves, Y. Gotra, F. K. Guo, X. Guo, M. Hattawy, Y. Hatta, T. Hayward, O. Hen, G. M. Huber, C. Hyde, E. L. Isupov, B. Jacak, W. Jacobs, A. Jentsch, C. R. Ji, S. Joosten, N. Kalantarians, Z. Kang, A. Kim, S. Klein, B. Kriesten, S. Kumano, A. Kumar, K. Kumericki, M. Kuchera, W. K. Lai, Jin Li, Shujie Li, W. Li, X. Li, H. -W. Lin, K. F. Liu, Xiaohui Liu, P. Markowitz, V Mathieu, M. McEneaney, A. Mekki, J. P. B. C. de Melo, Z. E. Meziani, R. Milner, H. Mkrtchyan, V. Mochalov, V. Mokeev, V. Morozov, H. Moutarde, M. Murray, S. Mtingwa, P. Nadel-Turonski, V. A. Okorokov, E. Onyie, L. L. Pappalardo, Z. Papandreou, C. Pecar, A. Pilloni, B. Pire, N. Polys, A. Prokudin, M. Przybycien, J. -W. Qiu, M. Radici, R. Reed, F. Ringer, B. J. Roy, N. Sato, A. Schaefer, B. Schmookler, G. Schnell, P. Schweitzer, R. Seidl, K. M. Semenov-Tian-Shansky, F. Serna, F. Shaban, M. H. Shabestari, K. Shiells, A. Signori, H. Spiesberger, I. Strakovsky, R. S. Sufian, A. Szczepaniak, L. Teodorescu, J. Terry, O. Teryaev, F. Tessarotto, C. Timmer, Abdel Nasser Tawfik, L. Valenzuela Cazares, A. Vladimirov, E. Voutier, D. Watts, D. Wilson, D. Winney, B. Xiao, Z. Ye, Zh. Ye, F. Yuan, N. Zachariou, I. Zahed, J. L. Zhang, Y. Zhang, J. Zhou

Summary: This White Paper aims to emphasize the significant advantages in the scientific progress achieved by the EIC. High luminosity operation is highly desirable as it allows for faster production and collection of scientific results. This becomes crucial for programs that require months or even years of operation at lower luminosity.

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Kinematical higher-twist corrections in ??? M1M2?: Neutral meson production

Bernard Pire, Qin-Tao Song

Summary: This paper investigates the impact of kinematical higher-twist corrections on the cross section of the & gamma;& DBLBOND; & RARR; M1M2 & gamma; process, up to twist 4. The three independent helicity amplitudes are presented in terms of twist-2 Generalized Distribution Amplitudes (GDAs), which are important nonperturbative quantities for understanding the 3D structure of hadrons. The numerical estimate of the kinematical higher-twist corrections is performed using the kinematics of BESIII, and it is shown that these corrections account for approximately 20% of the cross sections on average.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Probing chiral-even and chiral-odd leading twist quark generalized parton distributions through the exclusive photoproduction of a γρ pair

Goran Duplancic, Saad Nabeebaccus, Kornelija Passek-Kumericki, Bernard Pire, Lech Szymanowski, Samuel Wallon

Summary: We extend our studies of a new class of 2 -> 3 exclusive processes by considering the exclusive photoproduction of a gamma rho pair. Our analysis covers the whole kinematical range from medium energies in fixed-target experiments to very large energies of colliders. We find that the obtained cross sections are sufficiently large for a dedicated experimental analysis to be performed, especially at JLab.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Proceedings Paper Physics, Multidisciplinary

ACCESSING GPDs THROUGH THE EXCLUSIVE PHOTOPRODUCTION OF A PHOTON-MESON PAIR WITH A LARGE INVARIANT MASS

Saad Nabeebaccus, Samuel Wallon, Goran Duplancic, Kornelija Passek-Kumericki, Bernard Pire, Lech Szymanowski

Summary: We study the exclusive photoproduction of a photon-meson pair with a large invariant mass in the framework of QCD factorisation. The focus is on the chiral-even sector of the generalised parton distributions (GPDs). The potential measurements of these distributions in various experiments, such as JLab 12-GeV, COMPASS, future EIC, and LHC, are discussed. The polarisation asymmetries with respect to the incoming photon are also computed.

ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Kinematical higher-twist corrections in γ*γ → M(M)over-bar

Cedric Lorce, Bernard Pire, Qin-Tao Song

Summary: We estimated the kinematical higher-twist corrections to the gamma*(q(1))gamma(q(2)) -> M(p(1))(M) over bar (p(2)) amplitudes, and calculated the cross sections for gamma*gamma -> pi(0)pi(0) and gamma*gamma -> eta eta. The results show that the kinematical higher-twist corrections play an important role in the total cross section, and considering these corrections is necessary for an accurate evaluation of the meson energy-momentum tensor form factors.

PHYSICAL REVIEW D (2022)

添加到收藏夹

Article Physics, Particles & Fields

Backward timelike Compton scattering to decipher the photon content of the nucleon

Bernard Pire, Kirill M. Semenov-Tian-Shansky, Alisa A. Shaikhutdinova, Lech Szymanowski

Summary: This paper discusses the exclusive photoproduction of nucleon with a large invariant mass lepton pair in the backward region specified by the small Mandelstam variable -u. The amplitude is factorized in terms of photon-to-nucleon Transition Distribution Amplitudes (TDAs), which provide a tomographic picture of the nucleon's photon content. A simplistic model-estimate is used to estimate the magnitude of the corresponding cross sections, and the background due to the electromagnetic Bethe-Heitler process is shown to be negligible in the kinematical regime of interest.

EUROPEAN PHYSICAL JOURNAL C (2022)

添加到收藏夹

Article Physics, Multidisciplinary

The Status and Future of Color Transparency and Nuclear Filtering

Pankaj Jain, Bernard Pire, John P. Ralston

Summary: This review discusses the controversial interpretations of experimental data regarding the phenomenon of color transparency fourty years after its introduction. The presented evidence examines the manifestation of color transparency in various exclusive hard scattering reactions. The authors advocate for new nuclear transparency measurements in different experimental set-ups, including near-forward exclusive reactions related to generalized parton distribution (GPD) physics and near-backward exclusive reactions related to transition distribution amplitudes (TDA) physics.

PHYSICS (2022)

添加到收藏夹

Article Physics, Multidisciplinary

u-Channel Color Transparency Observables

Garth M. Huber, Wenliang B. Li, Wim Cosyn, Bernard Pire

Summary: This paper proposes to study the occurrence of color transparency in hard exclusive reactions in the backward regime. Guided by encouraging results from Jefferson Laboratory, the study shows that investigating nuclear targets provides a new opportunity for testing nuclear color transparency.

PHYSICS (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Phenomenology of diphoton photoproduction at next-to-leading order

O. Grocholski, B. Pire, P. Sznajder, L. Szymanowski, J. Wagner

Summary: This study focuses on diphoton exclusive photoproduction in the kinematics where collinear QCD factorization framework applies. The results show that the predictions for cross sections are sensitive to various models of generalized parton distributions (GPDs). Despite the large and negative NLO corrections, the reaction studied remains a promising tool for extracting C-odd GPDs.

PHYSICAL REVIEW D (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Collinear factorization of diphoton photoproduction at next to leading order

O. Grocholski, B. Pire, P. Sznajder, L. Szymanowski, J. Wagner

Summary: This study calculates the amplitude for the photoproduction of a near forward large mass diphoton at leading twist and next to leading order in the framework of collinear factorization. The validity of factorization at this order is demonstrated, with the NLO result probing the whole domain of definition of quark GPDs with both real and imaginary parts. Phenomenology of the results for medium (JLab) and higher energy (EIC) experiments will be developed in future studies.

PHYSICAL REVIEW D (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Charged current electroproduction of a charmed meson at an electron-ion collider

B. Pire, L. Szymanowski, J. Wagner

Summary: In this study, we calculated the amplitude for exclusive electroweak production of pseudoscalar Ds or vector Ds charmed strange meson on an unpolarized nucleon in leading order alpha s. We utilized the collinear QCD approach where generalized gluon distributions factorize from perturbatively calculable coefficient functions. It was shown that this process could potentially be studied at future electron-ion colliders.

PHYSICAL REVIEW D (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Inhomogeneity of a rotating quark-gluon plasma from holography

Nelson R. F. Braga, Octavio C. Junqueira

Summary: This study investigates the influence of rotation on the transition temperature of strongly interacting matter produced in non-central heavy ion collisions. By using a holographic description of an AdS black hole, the authors extend the analysis to the more realistic case where the matter spreads over a region around the rotational axis. The results show the coexistence of confined and deconfined phases and are consistent with the concept of local temperature in rotating frames developed by Tolman and Ehrenfest.

PHYSICS LETTERS B (2024)

添加到收藏夹

Article Astronomy & Astrophysics

Constrain the time variation of the gravitational constant via the propagation of gravitational waves

Bing Sun, Jiachen An, Zhoujian Cao

Summary: This paper investigates the effect of gravitational constant variation on the propagation of gravitational waves. By employing two analytical methods, the study finds that variations in the gravitational constant result in amplitude and phase corrections for gravitational waves, and the time variation of the gravitational constant can be constrained through the propagation of gravitational waves.

PHYSICS LETTERS B (2024)

添加到收藏夹

Article Astronomy & Astrophysics

Quantum tunneling from Schwarzschild black hole in non-commutative gauge theory of gravity

Abdellah Touati, Zaim Slimane

Summary: This letter presents the first study of Hawking radiation as a tunneling process within the framework of non-commutative gauge theory of gravity. The non-commutative Schwarzschild black hole is reconstructed using the Seiberg-Witten map and the star product. The emission spectrum of outgoing massless particles is computed using the quantum tunneling mechanism. The results reveal pure thermal radiation in the low-frequency scenario, but a deviation from pure thermal radiation in the high-frequency scenario due to energy conservation. It is also found that noncommutativity enhances the correlations between successively emitted particles.

PHYSICS LETTERS B (2024)

添加到收藏夹

Article Astronomy & Astrophysics

Compact stars: To cross or go around? That is the question

Shahar Hod

Summary: The travel times of light signals between two antipodal points on a compact star's surface are calculated for two different trajectories. It is shown that, for highly dense stars, the longer trajectory along the surface may have a shorter travel time as measured by asymptotic observers. A critical value of the dimensionless density-area parameter is determined for constant density stars to distinguish cases where crossing through the star's center or following a semi-circular trajectory on the surface has a shorter travel time as measured by asymptotic observers.

PHYSICS LETTERS B (2024)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.