☆ 4.7 Article

Exotic dynamically generated baryons with negative charm quantum number

PHYSICAL REVIEW D (2010)

Journal

PHYSICAL REVIEW D

Volume 81, Issue 9, Pages -

Publisher

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevD.81.094016

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Astronomy & Astrophysics Physics, Particles & Fields

Funding

DGI
FEDER [FIS2006-03438, FIS2008-01143/FIS, PIE-CSIC 200850I238]
Junta de Andalucia [FQM225]
European Community [227431]
EU
DFG [SFB/TR 16]
University of Groningen

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Abstract

Following a model based on the SU(8) symmetry that treats heavy pseudoscalars and heavy vector mesons on an equal footing, as required by heavy quark symmetry, we study the interaction of baryons and mesons in coupled channels within an unitary approach that generates dynamically poles in the scattering T-matrix. We concentrate in the exotic channels with negative charm quantum number for which there is the experimental claim of one state.

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Hidden charm hadronic molecule with strangeness Pcs*(4739) as a ΣcDK bound state

Tian-Wei Wu, Ya-Wen Pan, Ming-Zhu Liu, Jun-Xu Lu, Li-Sheng Geng, Xiao-Hai Liu

Summary: This study investigates the existence of a three-body Sigma(c) DK bound state, similar to the first hidden charm pentaquark state discovered by the LHCb Collaboration. By solving the Schrodinger equation, the researchers found an excited hidden charm exotic state with strangeness, P-cs(*)(4739), and analyzed its strong decays, primarily into D Xi(')(c) and D-s(*)Sigma(c) with decay widths in the tens of MeV range.

PHYSICAL REVIEW D (2021)

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Article Physics, Particles & Fields

Masses and strong decays of open charm hexaquark states Σc() Σc()

Xi-Zhe Ling, Ming-Zhu Liu, Li-Sheng Geng

Summary: Inspired by the recent discovery of the doubly charmed tetraquark state T-cc(+) by the LHCb Collaboration, a study on the masses and strong decays of open charm hexaquark states Sigma((*))(c) Sigma((*))(c) was conducted. Bound states of various isospin values were predicted, and decay widths of Sigma((*))(c) Sigma((*))(c) -> Lambda(c)Lambda(c) were estimated via effective Lagrangian approach, with recommendations for future experimental searches for these hexaquark states in the Lambda(c)Lambda(c) invariant mass distributions.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Astronomy & Astrophysics

Open charm and bottom meson-nucleon potentials a la the nuclear force

Yasuhiro Yamaguchi, Shigehiro Yasui, Atsushi Hosaka

Summary: This paper discusses the interaction between a nucleon and an open heavy meson by considering the exchange potentials of g, a, p, and w. A potential model is constructed based on chiral symmetry for light quarks and spin symmetry for heavy quarks. The parameters of the model are adjusted to reproduce low-energy NN scatterings. The results show that the interaction can accommodate over bar DN and BN bound states with specific quantum numbers. The g exchange potential plays a significant role in the isosinglet channel, while the a exchange potential is important for the isotriplet one.

PHYSICAL REVIEW D (2022)

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Article Physics, Multidisciplinary

An algorithm for network community structure determination by surprise

Daniel Gamermann, Jose Antonio Pellizzaro

Summary: This paper proposes a new benchmark and approach based on surprise metric for identifying community structures in networks. The surprise-based methods outperform modularity-based methods, especially for heterogeneous graphs with different community sizes.

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS (2022)

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Article Astronomy & Astrophysics

Tau longitudinal and transverse polarizations from visible kinematics in (anti-)neutrino nucleus scattering

E. Hernandez, J. Nieves, F. Sanchez, J. E. Sobczyk

Summary: Due to the difficulty in directly measuring the upsilon(tau)((upsilon) over bar (tau))A(Z) -> tau(-/+) X reaction, information on the dynamics of this nuclear process is extracted from the analysis of energy and angular distributions of the observable products of tau decay. The study presents the general expression for the energy and angular differential cross section of outgoing hadrons (pion or rho meson) in the sequential upsilon(tau) A(Z) -> tau(-) (pi(-)upsilon(tau), rho(-)upsilon(tau))X and (upsilon) over bar (tau)A(Z) -> tau(+) (pi(+)(upsilon) over bar (tau), rho(+)(upsilon) over bar (tau)) X reactions.

PHYSICS LETTERS B (2022)

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Article Physics, Particles & Fields

Visible energy and angular distributions of the charged particle from the τ-decay in b → Cτ (μ(ν)over-barμντ, πντ, ρντ)(ν)over-barτ reactions

Neus Penalva, Eliecer Hernandez, Juan Nieves

Summary: In this study, we investigate the d(2)Gamma(d)/(d omega d cos theta(d)), d Gamma(d)/d cos theta(d), and d Gamma(d)/dE(d) distributions defined in terms of the visible energy and polar angle of the charged particle from tau-decay. We consider the deviations from the predictions of the standard model and the construction of new physics operators using both right- and left-handed neutrino fields. Results are presented for Lambda(b) -> Lambda(c)tau and (B) over bar -> D-(*())tau sequential decays, which could be used to distinguish between different new physics models.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Astronomy & Astrophysics

Effective range expansion for narrow near-threshold resonances

Vadim Baru, Xiang-Kun Dong, Meng-Lin Du, Arseniy Filin, Feng-Kun Guo, Christoph Hanhart, Alexey Nefediev, Juan Nieves, Qian Wang

Summary: In this paper, we discuss the general features of the effective range expansion, including the content of its parameters with respect to near-threshold states and the necessary modifications in the presence of coupled channels, isospin violations, and unstable constituents. As illustrative examples, we analyze the properties of the chi(c1)(3872) and T-cc(+) states, supporting the claim that these exotic states have a predominantly molecular nature.

PHYSICS LETTERS B (2022)

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Correction Physics, Particles & Fields

Visible energy and angular distributions of the charged particle from the τ-decay in b → cτ (μ(ν)over-barμντ, πντ, ρντ)(ν)over-barτ reactions (vol 4, 26, 2022)

Neus Penalva, Eliecer Hernandez, Juan Nieves

Summary: In the original version, the bottom-right panel of figure 10 was incorrect. We mistakenly repeated the tau -> pi v(tau) panel instead of presenting the tau -> pv(tau) one. The corrected figure is provided below (only the bottom-right panel changes).

JOURNAL OF HIGH ENERGY PHYSICS (2023)

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Article Multidisciplinary Sciences

Understanding the 0++ and 2++ charmonium(-like) states near 3.9 GeV

Teng Ji, Xiang-Kun Dong, Miguel Albaladejo, Meng-Lin Du, Feng-Kun Guo, Juan Nieves, Bing-Song Zou

Summary: We propose that the X(3915) observed in the J/psi x channel is the same as the chi(c2)(3930), while the X(3960) observed in the Ds+Ds- channel is an S-wave Ds+Ds- hadronic molecule. Additionally, we find that the B+ -> D+D-K+ component with J(PC) = 0(++) assigned to the X(3915) in the current Review of Particle Physics has the same origin as the X(3960) with a mass of around 3.94 GeV. By analyzing available data in the D (D) over bar and Ds+Ds- channels from B decays and gamma gamma fusion reaction, considering both the D (D) over bar -D-s(D) over bar (s)-D*(D) over bar*-D-s*(D) over bar (s)* coupled channels with 0(++) and a 2(++) state introduced additionally, we find that all the data in different processes can be simultaneously well reproduced, and four hidden-charm scalar molecular states with masses around 3.73, 3.94, 3.99, and 4.23 GeV are produced. These results may deepen our understanding of the spectrum of charmonia and the interactions between charmed hadrons.

SCIENCE BULLETIN (2023)

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Article Astronomy & Astrophysics

Femtoscopic correlation function for the Tcc(3875)+ state

I. Vidana, A. Feijoo, M. Albaladejo, J. Nieves, E. Oset

Summary: We conducted a study on the femtoscopic correlation functions for the D0D*+ and D+D*0 channels that form the Tcc state. By developing a formalism that factorizes the scattering amplitudes, we were able to calculate the integrals involving the strong interaction explicitly. Our results show that for a source size of 1 fm, the correlation functions for the D0D*+ and D+D*0 channels near the origin are approximately 30 and 2.5, respectively, and these observables converge to unity at a relative momentum of about 200 MeV. Our tests indicate that the correlation functions mostly provide information on the scattering length, but with higher precision measurements, the effective range of the D0D*+ channel could also be obtained.

PHYSICS LETTERS B (2023)

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Article Astronomy & Astrophysics

X(3872), X(4014), and their bottom partners at finite temperature

Gloria Montana, Angels Ramos, Laura Tolos, Juan M. Torres-Rincon

Summary: This study investigates the properties of X(3872) and its spin partner X(4014) in both vacuum and at finite temperature. The X(3872) is dynamically generated through the s-wave rescattering of pseudoscalar and vector charm mesons, while the X(4014) is obtained from the scattering of charm vector mesons. The properties of their bottom counterparts are predicted using heavy-quark flavor symmetry. The dynamically generated states exhibit decreasing mass and increasing decay width with temperature, consistent with their meson constituents. These results have implications for relativistic heavy-ion collisions, analysis of the medium formed after hadronization, and femtoscopic studies, and can be tested in lattice-QCD calculations.

PHYSICAL REVIEW D (2023)

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Article Astronomy & Astrophysics

Femtoscopy of D mesons and light mesons upon unitarized effective field theories

Juan M. Torres-Rincon, Angels Ramos, Laura Tolos

Summary: Hadron femtoscopy is a useful tool for studying heavy-ion collisions and hadron interactions. In this study, the authors focus on heavy-flavor femtoscopy using the ALICE detector at the LHC. They compute correlation functions of D mesons and light mesons to access the wave function and predict correlation functions involving various meson combinations. The results provide insights into the energy states of meson systems.

PHYSICAL REVIEW D (2023)

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Article Physics, Nuclear

Properties of the Tcc(3875)+ and Tcc(3875)- and their heavy-quark spin partners in nuclear matter

V. Montesinos, M. Albaladejo, J. Nieves, L. Tolos

Summary: The properties of tetraquark-like states Tcc(3875)+ and Tc over bar c over bar (3875)- are modified in dense nuclear matter. Changes in the spectral functions and scattering amplitudes of heavy quark mesons in a nuclear medium lead to important modifications in the exotic states, with the density playing a crucial role. The distinctive density patterns observed hint at the existence of molecular components in these states, differentiating them from compact quark structures.

PHYSICAL REVIEW C (2023)

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Article Astronomy & Astrophysics

Nonminimal non-Abelian quantum vector fields in curved spacetime

L. L. Salcedo

Summary: This study investigates the quantum effective action of nonminimal vector fields with Abelian or non-Abelian gauge degrees of freedom in curved spacetime. By introducing a non-Abelian version of the Stueckelberg field, pathologies due to gauge invariance in the ultraviolet regime are avoided. The study finds that the breaking of gauge invariance induced by the mass term only affects the tree-level part of the effective action. The ultraviolet divergent part of the effective action to one loop is obtained using the method of covariant symbols and dimensional regularization.

PHYSICAL REVIEW D (2022)

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Article Astronomy & Astrophysics

Is the Λc(2625)+ the heavy quark spin symmetry partner of the Λc(2595)+ ?

Meng-Lin Du, Eliecer Hernandez, Juan Nieves

Summary: This study uses a heavy quark effective theory scheme to investigate the matrix elements between Lambda(b) and Lambda(c) resonances. The results show that the scheme can reasonably describe the experimental data and provide support for the possibility of the resonances forming a heavy quark spin symmetry doublet. However, the accuracy of the lattice QCD description of these resonances needs further improvement to determine the effects of threshold positions and to confirm if they are HQSS partners. Additionally, the study also provides an explanation for the large deviations from the predicted values in the semileptonic decay widths near zero recoil.

PHYSICAL REVIEW D (2022)

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Proceedings Paper Engineering, Aerospace

The enhanced X-ray Timing and Polarimetry mission - eXTP: an update on its scientific cases, mission profile and development status

Shuang-Nan Zhang, Andrea Santangelo, Yupeng Xu, Marco Feroci, Margarita Hernanz, Fangjun Lu, Yong Chen, Hua Feng, Kirpal Nandra, Weichun Jiang, Jiri Svoboda, Soren Brandt, Stephane Schanne, Jean in't Zand, Malgorzata Michalska, Enrico Bozzo, Emrah Kalemci, Ivan Agudo, Mahdi Ahangarianabhari, Gabby Aitink-Kroes, Giovanni Ambrosi, Filippo Ambrosino, Zhenghua An, Miguel Angel Perez Torres, Matias Antonelli, Andrea Argan, Viktor Babinec, Luca Baldini, Marco Barbera, Coen van Baren, David Baudin, Joerg Bayer, Ronaldo Bellazzini, Pierluigi Bellutti, Bruna Bertucci, Giuseppe Bertuccio, Xingzi Bi, Mirko Boezio, Valter Bonvicini, Walter Bonvicini, Pol Bordas, Alice Borghese, Giacomo Borghi, Florent Bouyjou, Ayhan Bozkurt, Alessandro Brez, Daniele Brienza, Franck Cadoux, Riccardo Campana, Jiewei Cao, Xuelei Cao, Jorge Casares, Elisabetta Cavazzuti, Francesco Ceraudo, Tianxiang Chen, Wen Chen, Can Chen, Yupeng Chen, Xin Chen, Yehai Chen, Jerome Chenevez, Yaodong Cheng, Daniela Cirrincione, Marta Civitani, Min Cong, Francesco Coti Zelati, Weiwei Cui, Tao Cui, Wei Cui, Boyu Dai, Thomas Dauser, Nicolas De Angelis, Barbara De Marco, Alessandra De Rosa, Ettore Del Monte, Sergio Di Cosimo, Sebastian Diebold, Giuseppe Dilillo, Fei Ding, Roman Dohnal, Zefang Dong, Immacolata Donnarumma, Michal Dovciak, Yuanyuan Du, Lorenzo Ducci, Yuri Evangelista, Qingmei Fan, Yannick Favre, Patricia Ferres, Emanuele Fiandrini, Francesco Ficorella, Fabio Fuschino, Jose Luis Galvez, Na Gao, Min Gao, Yuqiang Ge, Mingyu Ge, Olivier Gevin, Marco Grassi, Yudong Gu, Quanying Gu, Ju Guan, Manuel Guedel, Xingbo Han, Dawei Han, Huilin He, Junwang He, Paul Hedderman, Jan-Willem den Herder, Bin Hong, Ander Hormaetxe, Dongjie Hou, Zexun Hu, Hao Hu, Qingbao Hu, Yu Hu, Yue Huang, Jiangjiang Huang, Qiushi Huang, Jia Huo, Richard Hynek, Kazumi Iwasawa, Lucca Izzo, Long Ji, Shumei Jia, Bowen Jiang, Wei Jiang, Jiechen Jiang, Xiaowei Jiang, Yang Jiao, Ge Jin, Fan Jin, Jordi Jose, Vladimir Karas, Thomas Kennedy, Christian Kirsch, Merlin Kole, Martin Komarek, Ingo Kreykenbohm, Lucien Kuiper, Irfan Kuvvetli, Claudio Labanti, Luca Latronico, Phillip Laubert, Tao Li, Longhui Li, Hong Li, Duo Li, Wei Li, Maoshun Li, Gang Li, Xiaobo Li, Chengkui Li, Bing Li, Haibo Li, Hong Liang, Qiuyan Liao, Jinyuan Liao, Olivier Limousin, Yanjian Lin, Manuel Linares, Rui Liu, Yichen Liu, Zhihao Liu, Hongwei Liu, Xiaojing Liu, Xiaohua Liu, Ugo Lo Cicero, Jens Loehring, Giovanni Lombardi, Maximilian Lorenz, Bing Lu, Leonardo Lucchesi, Tao Luo, Laidan Luo, Jia Ma, Xiang Ma, Daniele Macera, Piero Malcovati, Alberto Manfreda, Josep Maria Paredes, Andrea Marinucci, Adrian Martindale, Norbert Meidinger, Filippo Mele, Vasco Mendes, Bin Meng, Martin Merkl, Aline Meuris, Giovanni Miniutti, Massimo Minuti, Alfredo Morbidini, Gianluca Morgante, Fabio Muleri, Riccardo Munini, Lorenzo Mussolin, Barbara Negri, Jianyin Nie, Petr Novak, Witold Nowosielski, Alessio Nuti, Ahmet Onat, Piotr Orleanski, Leonardo Orsini, Roland Ottensamer, Ge Ou, Luigi Pacciani, Stephane Paltani, Teng Pan, Kai Pan, Giovanni Pareschi, Alessandro Patruno, Giancarlo Pepponi, Emanuele Perinati, Raffaele Piazzolla, Antonino Picciotto, Claudio Piemonte, Michele Pinchera, Samuel Pliego, Juri Poutanen, Liqiang Qi, Fazhi Qi, Pengfei Qiang, Fangjian Qiao, Zheng Qiao, Xiangbiao Qiu, Chengbo Qiu, Jinlu Qu, Alexandre Rachevski, Irina Rashevskaia, Nanda Rea, Marc Ribo, Rob de la Rie, Jerome Rodriguez, Pablo Rodriguez Gil, Gloria Sala, Thomas Schanz, Roberto Serafinelli, Carmelo Sgro, Zhengxiang Shen, Lizhi Sheng, Jingyan Shi, Giorgia Sironi, Konrad Skup, Liming Song, Zeyu Song, Jiangbo Song, Gloria Spandre, Daniele Spiga, Yongquan Su, Liang Sun, Muberra Sungur, Libor Sveda, Gianpiero Tagliaferri, Ying Tan, Lian Tao, Denis Tcherniak, Chris Tenzer, Michela Todaro, Laura Tolos, Gabriel Torok, Diego F. Torres, Alessio Trois, Onur Turhan, Phil Uttley, Andrea Vacchi, Enrico Virgilli, Channah Vogel, Dave Walton, Jian Wang, Xianqi Wang, Bo Wang, Langping Wang, Xiaofeng Wang, Dianlong Wang, Yusa Wang, Juan Wang, Hao Wang, Ruijie Wang, Ping Wang, Lingjun Wang, Wenshuai Wang, Tian Wang, Haoyu Wang, Zhanshan Wang, Anna L. Watts, Xiangyang Wen, Joern Wilms, Berend Winter, Xin Wu, Chao Wu, Zhenyu Wu, Qiong Wu, Kaiji Wu, Hao Xiong, Shaolin Xiong, Wei Xu, Zhao Xu, Jingjing Xu, Xiongwei Xu, Jiadai Xue, Yongqing Yan, Xingtao Yan, Xianghui Yang, Yanji Yang, Xiongtao Yang, Sheng Yang, Jiawei Yang, Yingquan Yang, Shuxu Yi, Yonggao Yu, Ke Yu, Ganluigi Zampa, Nicola Zampa, Silvia Zane, Andrzej A. Zdziarski, Long Zhang, Shu Zhang, Wenda Zhang, Xiaoli Zhang, Zhen Zhang, Jiawei Zhang, Fan Zhang, Ziliang Zhang, Dali Zhang, Honglin Zhang, Aimei Zhang, Tong Zhang, Hongmei Zhang, Juan Zhang, Liang Zhang, Yueting Zhang, Li Zhao, Baosheng Zhao, Zijian Zhao, Xiaofan Zhao, Haisheng Zhao, Xiaoyun Zhao, Shijie Zheng, Yupeng Zhou, Xiaohong Zhou, Jiahuan Zhu, Yuxuan Zhu, Cheng Zhu, Zhencai Zhu, Nicola Zorzi, Frans Zwart

Summary: The enhanced X-ray Timing and Polarimetry mission is a flagship observatory that explores the properties of matter and the propagation of light in extreme conditions found in the Universe. With its advanced technology and capabilities, the mission is of great significance. It is currently in progress and is expected to be completed by mid-2022.

SPACE TELESCOPES AND INSTRUMENTATION 2022: ULTRAVIOLET TO GAMMA RAY (2022)

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Article Astronomy & Astrophysics

New physics effects on Λb → Λc*τ(ν)over-barτ decays

Meng-Lin Du, Neus Penalva, Eliecer Hernandez, Juan Nieves

Summary: This paper utilizes lattice determination to study the role of the Lambda(b) -> Lambda(c)* (2595)tau(nu) over bar (tau) and Lambda(c) (2625)tau(nu) over bar (tau) semileptonic decays in lepton flavor universality violation studies. By analyzing different observables, the paper compares the results obtained in the Standard Model and other schemes containing new physics interactions. The analysis shows that these decay reactions already have the potential to distinguish between different new physics scenarios, and this potential will improve with more precise form factors.

PHYSICAL REVIEW D (2022)

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Article Astronomy & Astrophysics

Quick Guides for Use of the CompOSE Data Base

Veronica Dexheimer, Marco Mancini, Micaela Oertel, Constanca Providencia, Laura Tolos, Stefan Typel

Summary: This article presents a combination of two quick guides that summarize relevant information about the CompOSE nuclear equation of state repository. The first guide is aimed at nuclear physicists and provides instructions on how to provide standard equation of state tables, while the second guide is meant for users and describes the basic procedures to obtain customized tables with equation of state data. Several examples are included to help both providers and users of the CompOSE database.

PARTICLES (2022)

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