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Internal γ decay and the superallowed branching ratio for the β+ emitter 38Km

PHYSICAL REVIEW LETTERS (2008)

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PHYSICAL REVIEW LETTERS

卷 100, 期 19, 页码 -

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AMER PHYSICAL SOC

DOI: 10.1103/PhysRevLett.100.192504

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Physics, Multidisciplinary

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The branching ratio for the superallowed beta(+) decay of (38)K(m) was measured at TRIUMF's ISAC radioactive ion beam facility. The M3 internal transition between the isomer and the ground state of (38)K(m) was observed with a branching ratio of 330(43) ppm. A search for the nonanalogue beta-decay branch to the first excited 0(+) state in (38)Ar was also performed and yielded an upper limit of <= 12 ppm at 90% C.L. These measurements lead to a revised superallowed branching ratio for (38)K(m) of 99.967(4)%, and increase the (38)K(m) ft value by its entire quoted uncertainty to ft=3052.1(10) s. Implications for tests of the nuclear-structure dependent corrections in superallowed beta decays and the extraction of the Cabibbo-Kobayashi-Maskawa matrix element V(ud) are discussed.

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Summary: The beta-gamma spectroscopy experiment of Os-195 nucleus was conducted at the KEK isotope separation system, where the radioactive isotope was produced by multinucleon transfer reactions. A total of 27 gamma-ray peaks were observed, with 21 identified as beta-delayed gamma rays of the Os-195 ground state. The beta-decay branching ratios and half-life of the Os-195 ground state were determined, showing agreement with previous studies.

PHYSICAL REVIEW C (2021)

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Article Physics, Multidisciplinary

Observation of the proton emitter 57116La59

Wei Zhang, Bo Cederwall, Ozge Aktas, Xiaoyu Liu, Aysegul Ertoprak, Ayse Nyberg, Kalle Auranen, Betool Alayed, Hussam Badran, Helen Boston, Maria Doncel, Ulrika Forsberg, Tuomas Grahn, Paul T. Greenlees, Song Guo, Jacob Heery, Joshua Hilton, David Jenkins, Rauno Julin, Sakari Juutinen, Minna Luoma, Olavi Neuvonen, Joonas Ojala, Robert D. Page, Janne Pakarinen, Jari Partanen, Edward S. Paul, Costel Petrache, Panu Rahkila, Panu Ruotsalainen, Mikael Sandzelius, Jan Saren, Stuart Szwec, Holly Tann, Juha Uusitalo, Robert Wadsworth

Summary: This study reports proton emission from the lanthanum isotope La-116 and proposes the presence of neutron-proton pair correlations in this system based on comparisons of measured proton energy and half-life. Furthermore, observations of decay from isomeric states in La-116 and La-117 are also reported.

COMMUNICATIONS PHYSICS (2022)

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Article Physics, Multidisciplinary

Improved Standard-Model Prediction for π0 → e+ e-

Martin Hoferichter, Bai-Long Hoid, Bastian Kubis, Jan Luedtke

Summary: We present an improved prediction for the dilepton decay of the neutral pion in the standard model. This study sharpens constraints on physics beyond the standard model, including pseudoscalar and axial-vector mediators, by determining the loop amplitude using a dispersive representation.

PHYSICAL REVIEW LETTERS (2022)

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Article Multidisciplinary Sciences

Stellar β- Decay Rates for 63Co and 63Ni by the Projected Shell Model

Zi-Rui Chen, Long-Jun Wang

Summary: In this study, the beta(-) decay rates for Co-63 and Ni-63 were investigated, and the calculated results were compared with the conventional shell model. It was found that the calculated beta(-) decay rates for Co-63 were lower than the conventional results. For Ni-63, the beta(-) decay rate under terrestrial conditions was well described, and the calculated beta(-) decay rates under s-process conditions were found to increase with stellar temperature due to the contribution from parent-nucleus excited states.

SYMMETRY-BASEL (2023)

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Article Astronomy & Astrophysics

Laser-assisted charged Higgs boson decay in Two Higgs Doublet Model - type II

S. Mouslih, M. Jakha, S. El Asri, S. Taj, B. Manaut, R. Benbrik, E. A. Siher

Summary: This paper investigates the decay of charged Higgs bosons in the type-II two-Higgs-doublet model under the influence of a circularly polarized electromagnetic field. The calculations utilize the Furry picture approach and exact solutions for charged particles in the presence of the electromagnetic wave field. The results provide an exact analytic expression for the decay width and analyze the modifications in different decay modes under superstrong fields.

PHYSICS LETTERS B (2022)

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Article Physics, Multidisciplinary

First Measurement of the Absolute Branching Fraction of Λ → pμ-(ν)over-barμ

M. Ablikim, M. N. Achasov, P. Adlarson, S. Ahmed, M. Albrecht, R. Aliberti, A. Amoroso, M. R. An, Q. An, X. H. Bai, Y. Bai, O. Bakina, R. Baldini Ferroli, I Balossino, Y. Ban, K. Begzsuren, N. Berger, M. Bertani, D. Bettoni, F. Bianchi, J. Bloms, A. Bortone, I Boyko, R. A. Briere, H. Cai, X. Cai, A. Calcaterra, G. F. Cao, N. Cao, S. A. Cetin, J. F. Chang, W. L. Chang, G. Chelkov, D. Y. Chen, G. Chen, H. S. Chen, M. L. Chen, S. J. Chen, X. R. Chen, Y. B. Chen, Z. J. Chen, W. S. Cheng, G. Cibinetto, F. Cossio, X. F. Cui, H. L. Dai, J. P. Dai, X. C. Dai, A. Dbeyssi, R. E. de Boer, D. Dedovich, Z. Y. Deng, A. Denig, I Denysenko, M. Destefanis, F. De Mori, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, X. Dong, S. X. Du, Y. L. Fan, J. Fang, S. S. Fang, Y. Fang, R. Farinelli, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, J. H. Feng, M. Fritsch, C. D. Fu, Y. Gao, Y. Gao, Y. Gao, Y. G. Gao, I Garzia, P. T. Ge, C. Geng, E. M. Gersabeck, A. Gilman, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, M. Greco, L. M. Gu, M. H. Gu, Y. T. Gu, C. Y. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. P. Guo, A. Guskov, T. T. Han, W. Y. Han, X. Q. Hao, F. A. Harris, K. L. He, F. H. Heinsius, C. H. Heinz, Y. K. Heng, C. Herold, M. Himmelreich, T. Holtmann, G. Y. Hou, Y. R. Hou, Z. L. Hou, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, L. Q. Huang, X. T. Huang, Y. P. Huang, Z. Huang, T. Hussain, N. Husken, W. Ikegami Andersson, W. Imoehl, M. Irshad, S. Jaeger, S. Janchiv, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, Y. Y. Ji, H. B. Jiang, X. S. Jiang, J. B. Jiao, Z. Jiao, S. Jin, Y. Jin, M. Q. Jing, T. Johansson, N. Kalantar-Nayestanaki, X. S. Kang, R. Kappert, M. Kavatsyuk, B. C. Ke, I. K. Keshk, A. Khoukaz, P. Kiese, R. Kiuchi, R. Kliemt, L. Koch, O. B. Kolcu, B. Kopf, M. Kuemmel, M. Kuessner, A. Kupsc, M. G. Kurth, W. Kuhn, J. J. Lane, J. S. Lange, P. Larin, A. Lavania, L. Lavezzi, Z. H. Lei, H. Leithoff, M. Lellmann, T. Lenz, C. Li, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. Li, H. Li, H. B. Li, H. J. Li, J. L. Li, J. Q. Li, J. S. Li, Ke Li, L. K. Li, Lei Li, P. R. Li, S. Y. Li, W. D. Li, W. G. Li, X. H. Li, X. L. Li, Xiaoyu Li, Z. Y. Li, H. Liang, H. Liang, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, L. Z. Liao, J. Libby, A. Limphirat, C. X. Lin, T. Lin, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. M. Liu, Huanhuan Liu, Huihui Liu, J. B. Liu, J. L. Liu, J. Y. Liu, K. Liu, K. Y. Liu, Ke Liu, L. Liu, M. H. Liu, P. L. Liu, Q. Liu, Q. Liu, S. B. Liu, Shuai Liu, T. Liu, T. Liu, W. M. Liu, X. Liu, Y. Liu, Y. B. Liu, Z. A. Liu, Z. Q. Liu, X. C. Lou, F. X. Lu, H. J. Lu, J. D. Lu, J. G. Lu, X. L. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, P. W. Luo, T. Luo, X. L. Luo, X. R. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, R. Q. Ma, R. T. Ma, X. X. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, S. Maldaner, S. Malde, Q. A. Malik, A. Mangoni, Y. J. Mao, Z. P. Mao, S. Marcello, Z. X. Meng, J. G. Messchendorp, G. Mezzadri, T. J. Min, R. E. Mitchell, X. H. Mo, N. Yu Muchnoi, H. Muramatsu, S. Nakhoul, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Olsen, Q. Ouyang, S. Pacetti, X. Pan, Y. Pan, A. Pathak, A. Pathak, P. Patteri, M. Pelizaeus, H. P. Peng, K. Peters, J. Pettersson, J. L. Ping, R. G. Ping, S. Pogodin, R. Poling, V Prasad, H. Qi, H. R. Qi, K. H. Qi, M. Qi, T. Y. Qi, S. Qian, W. B. Qian, Z. Qian, C. F. Qiao, L. Q. Qin, X. P. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, S. Q. Qu, K. H. Rashid, K. Ravindran, C. F. Redmer, A. Rivetti, V Rodin, M. Rolo, G. Rong, Ch Rosner, M. Rump, H. S. Sang, A. Sarantsev, Y. Schelhaas, C. Schnier, K. Schoenning, M. Scodeggio, D. C. Shan, W. Shan, X. Y. Shan, J. F. Shangguan, M. Shao, C. P. Shen, H. F. Shen, P. X. Shen, X. Y. Shen, H. C. Shi, R. S. Shi, X. Shi, X. D. Shi, J. J. Song, W. M. Song, Y. X. Song, S. Sosio, S. Spataro, K. X. Su, P. P. Su, F. F. Sui, G. X. Sun, H. K. Sun, J. F. Sun, L. Sun, S. S. Sun, T. Sun, W. Y. Sun, W. Y. Sun, X. Sun, Y. J. Sun, Y. Z. Sun, Z. T. Sun, Y. H. Tan, Y. X. Tan, C. J. Tang, G. Y. Tang, J. Tang, J. X. Teng, V Thoren, W. H. Tian, Y. T. Tian, I Uman, B. Wang, C. W. Wang, D. Y. Wang, H. J. Wang, H. P. Wang, K. Wang, L. L. Wang, M. Wang, M. Z. Wang, Meng Wang, S. Wang, W. Wang, W. H. Wang, W. P. Wang, X. Wang, X. F. Wang, X. L. Wang, Y. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Y. Y. Wang, Z. Wang, Z. Y. Wang, Ziyi Wang, Zongyuan Wang, D. H. Wei, F. Weidner, S. P. Wen, D. J. White, U. Wiedner, G. Wilkinson, M. Wolke, L. Wollenberg, J. F. Wu, L. H. Wu, L. J. Wu, X. Wu, Z. Wu, L. Xia, H. Xiao, S. Y. Xiao, Z. J. Xiao, X. H. Xie, Y. G. Xie, Y. H. Xie, T. Y. Xing, C. J. Xu, G. F. Xu, Q. J. Xu, W. Xu, X. P. Xu, Y. C. Xu, F. Yan, L. Yan, W. B. Yan, W. C. Yan, Xu Yan, H. J. Yang, H. X. Yang, L. Yang, S. L. Yang, Y. X. Yang, Yifan Yang, Zhi Yang, M. Ye, M. H. Ye, J. H. Yin, Z. Y. You, B. X. Yu, C. X. Yu, G. Yu, J. S. Yu, T. Yu, C. Z. Yuan, L. Yuan, X. Q. Yuan, Y. Yuan, Z. Y. Yuan, C. X. Yue, A. A. Zafar, X. Zeng Zeng, Y. Zeng, A. Q. Zhang, B. X. Zhang, Guangyi Zhang, H. Zhang, H. H. Zhang, H. H. Zhang, H. Y. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, Jianyu Zhang, Jiawei Zhang, L. M. Zhang, L. Q. Zhang, Lei Zhang, S. Zhang, S. F. Zhang, Shulei Zhang, X. D. Zhang, X. Y. Zhang, Y. Zhang, Y. T. Zhang, Y. H. Zhang, Yan Zhang, Yao Zhang, Z. Y. Zhang, G. Zhao, J. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, S. J. Zhao, Y. B. Zhao, Y. X. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, B. Zhong, C. Zhong, L. P. Zhou, Q. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, A. N. Zhu, J. Zhu, K. Zhu, K. J. Zhu, S. H. Zhu, T. J. Zhu, W. J. Zhu, W. J. Zhu, Y. C. Zhu, Z. A. Zhu, B. S. Zou, J. H. Zou

Summary: The study reports the absolute branching fraction of Lambda -> p mu(-)(upsilon) over bar (mu) with improved precision, showing agreement with the predictions of the standard model and no evidence of CP violation.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Nuclear

β- and γ-spectroscopy study of 119Pd and 119Ag

J. Kurpeta, A. Abramuk, T. Rzaca-Urban, W. Urban, L. Canete, T. Eronen, S. Geldhof, M. Gierlik, J. P. Greene, A. Jokinen, A. Kankainen, I. D. Moore, D. A. Nesterenko, H. Penttila, I Pohjalainen, M. Reponen, S. Rinta-Antila, A. de Roubin, G. S. Simpson, A. G. Smith, M. Vilen

Summary: In this study, neutron-rich Pd-119 nuclei were synthesized through proton-induced fission of natural uranium, followed by detailed investigations on their nuclear structure and decay properties. The research revealed two distinct nuclear level structures in Ag-119, and identified two beta-unstable isomers in Pd-119.

PHYSICAL REVIEW C (2022)

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Article Physics, Particles & Fields

Measurement of the branching fraction of the B0→Ds+π- decay

R. Aaij, C. Abellan Beteta, T. Ackernley, B. Adeva, M. Adinolfi, H. Afsharnia, C. A. Aidala, S. Aiola, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero, Z. Aliouche, G. Alkhazov, P. Alvarez Cartelle, S. Amato, Y. Amhis, L. An, L. Anderlini, A. Andreianov, M. Andreotti, F. Archilli, A. Artamonov, M. Artuso, K. Arzymatov, E. Aslanides, M. Atzeni, B. Audurier, S. Bachmann, M. Bachmayer, J. J. Back, S. Baker, P. Baladron Rodriguez, V Balagura, W. Baldini, J. Baptista Leite, R. J. Barlow, S. Barsuk, W. Barter, M. Bartolini, F. Baryshnikov, J. M. Basels, G. Bassi, B. Batsukh, A. Battig, A. Bay, M. Becker, F. Bedeschi, I Bediaga, A. Beiter, V Belavin, S. Belin, V Bellee, K. Belous, I Belov, I Belyaev, G. Bencivenni, E. Ben-Haim, A. Berezhnoy, R. Bernet, D. Berninghoff, H. C. Bernstein, C. Bertella, A. Bertolin, C. Betancourt, F. Betti, Ia Bezshyiko, S. Bhasin, J. Bhom, L. Bian, M. S. Bieker, S. Bifani, P. Billoir, M. Birch, F. C. R. Bishop, A. Bizzeti, M. Bjrn, M. P. Blago, T. Blake, F. Blanc, S. Blusk, D. Bobulska, J. A. Boelhauve, O. Boente Garcia, T. Boettcher, A. Boldyrev, A. Bondar, N. Bondar, S. Borghi, M. Borisyak, M. Borsato, J. T. Borsuk, S. A. Bouchiba, T. J. Bowcock, A. Boyer, C. Bozzi, M. J. Bradley, S. Braun, A. Brea Rodriguez, M. Brodski, J. Brodzicka, A. Brossa Gonzalo, D. Brundu, A. Buonaura, C. Burr, A. Bursche, A. Butkevich, J. S. Butter, J. Buytaert, W. Byczynski, S. Cadeddu, H. Cai, R. Calabrese, L. Calefice, L. Calero Diaz, S. Cali, R. Calladine, M. Calvi, M. Calvo Gomez, P. Camargo Magalhaes, A. Camboni, P. Campana, A. F. Campoverde Quezada, S. Capelli, L. Capriotti, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, I Carli, P. Carniti, K. Carvalho Akiba, A. Casais Vidal, G. Casse, M. Cattaneo, G. Cavallero, S. Celani, J. Cerasoli, A. J. Chadwick, M. G. Chapman, M. Charles, Ph Charpentier, G. Chatzikonstantinidis, C. A. Chavez Barajas, M. Chefdeville, C. Chen, S. Chen, A. Chernov, S-G Chitic, V Chobanova, S. Cholak, M. Chrzaszcz, A. Chubykin, V Chulikov, P. Ciambrone, M. F. Cicala, X. Cid Vidal, G. Ciezarek, P. E. L. Clarke, M. Clemencic, H. 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, G. Coombs, G. Corti, C. M. Costa Sobral, B. Couturier, D. C. Craik, J. Crkovska, M. Cruz Torres, R. Currie, C. L. Da Silva, E. Dall'Occo, J. Dalseno, C. D'Ambrosio, A. Danilina, P. D'Argent, A. Davis, O. De Aguiar Francisco, K. De Bruyn, S. De Capua, M. De Cian, J. M. De Miranda, L. De Paula, M. De Serio, D. De Simone, P. De Simone, J. A. de Vries, C. T. Dean, D. Decamp, L. Del Buono, B. Delaney, H-P Dembinski, A. Dendek, V Denysenko, D. Derkach, O. Deschamps, F. Desse, F. Dettori, B. Dey, P. Di Nezza, S. Didenko, L. Dieste Maronas, H. Dijkstra, V Dobishuk, A. M. Donohoe, F. Dordei, A. C. dos Reis, L. Douglas, A. Dovbnya, A. G. Downes, K. Dreimanis, M. W. Dudek, L. Dufour, V Duk, P. Durante, J. M. Durham, D. Dutta, M. Dziewiecki, A. Dziurda, A. Dzyuba, S. Easo, U. Egede, V Egorychev, S. Eidelman, S. Eisenhardt, S. Ek-In, L. Eklund, S. Ely, A. Ene, E. Epple, S. Escher, J. Eschle, S. Esen, T. Evans, A. Falabella, J. Fan, Y. Fan, B. Fang, N. Farley, S. Farry, D. Fazzini, P. Fedin, M. Feo, P. Fernandez Declara, A. Fernandez Prieto, J. M. Fernandez-tenllado Arribas, 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, C. Fitzpatrick, T. Fiutowski, F. Fleuret, M. Fontana, F. Fontanelli, R. Forty, V. Franco Lima, M. Franco Sevilla, M. Frank, E. Franzoso, G. Frau, C. Frei, D. A. Friday, J. Fu, Q. Fuehring, W. Funk, E. Gabriel, T. Gaintseva, 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, D. Gerstel, Ph Ghez, V Gibson, M. Giovannetti, A. Gioventu, P. Gironella Gironell, L. Giubega, C. Giugliano, 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, P. Gorbounov, I. Gorelov, C. Gotti, E. Govorkova, J. P. Grabowski, R. Graciani Diaz, T. Grammatico, L. A. Granado Cardoso, E. Grauges, E. Graverini, G. Graziani, A. Grecu, L. M. Greeven, P. Griffith, L. Grillo, S. Gromov, B. R. Gruberg Cazon, C. Gu, M. Guarise, P. A. Gunther, E. Gushchin, A. Guth, Y. Guz, T. Gys, T. Hadavizadeh, G. Haefeli, C. Haen, J. Haimberger, T. Halewood-leagas, P. M. Hamilton, Q. Han, X. Han, T. H. Hancock, S. Hansmann-Menzemer, N. Harnew, T. Harrison, C. Hasse, M. Hatch, J. He, M. Hecker, K. Heijhoff, K. Heinicke, A. M. Hennequin, K. Hennessy, L. Henry, J. Heuel, A. Hicheur, D. Hill, M. Hilton, S. E. Hollitt, J. Hu, J. Hu, W. Hu, W. Huang, X. Huang, W. Hulsbergen, R. J. Hunter, M. Hushchyn, D. Hutchcroft, D. Hynds, P. Ibis, M. Idzik, D. Ilin, P. Ilten, A. Inglessi, A. Ishteev, K. Ivshin, R. Jacobsson, S. Jakobsen, E. Jans, B. K. Jashal, A. Jawahery, V Jevtic, M. Jezabek, F. Jiang, M. John, D. Johnson, C. R. Jones, T. P. Jones, B. Jost, N. Jurik, S. Kandybei, Y. Kang, M. Karacson, N. Kazeev, F. Keizer, M. Kenzie, T. Ketel, B. Khanji, A. Kharisova, S. Kholodenko, K. E. Kim, T. Kirn, V. S. Kirsebom, O. Kitouni, S. Klaver, K. Klimaszewski, S. Koliiev, A. Kondybayeva, A. Konoplyannikov, P. Kopciewicz, R. Kopecna, P. Koppenburg, M. Korolev, I Kostiuk, O. Kot, S. Kotriakhova, P. Kravchenko, L. Kravchuk, R. D. Krawczyk, M. Kreps, F. Kress, S. Kretzschmar, P. Krokovny, W. Krupa, W. Krzemien, W. Kucewicz, M. Kucharczyk, V Kudryavtsev, H. S. Kuindersma, G. J. Kunde, T. Kvaratskheliya, D. Lacarrere, G. Lafferty, A. Lai, A. Lampis, D. Lancierini, J. J. Lane, R. Lane, G. Lanfranchi, C. Langenbruch, J. Langer, O. Lantwin, T. Latham, F. Lazzari, R. Le Gac, S. H. Lee, R. Lefevre, A. Leflat, S. Legotin, O. Leroy, T. Lesiak, B. Leverington, H. Li, L. Li, P. Li, Y. Li, Y. Li, Z. Li, X. Liang, T. Lin, R. Lindner, V Lisovskyi, R. Litvinov, G. Liu, H. Liu, S. Liu, X. Liu, A. Loi, J. Lomba Castro, I Longstaff, J. H. Lopes, G. Loustau, G. H. Lovell, Y. Lu, D. Lucchesi, S. Luchuk, M. Lucio Martinez, V Lukashenko, Y. Luo, A. Lupato, E. Luppi, O. Lupton, A. Lusiani, X. Lyu, L. Ma, S. Maccolini, F. Machefert, F. Maciuc, V Macko, P. Mackowiak, S. Maddrell-Mander, O. Madejczyk, L. R. Madhan Mohan, O. Maev, A. Maevskiy, D. Maisuzenko, M. W. Majewski, S. Malde, B. Malecki, A. Malinin, T. Maltsev, H. Malygina, G. Manca, G. Mancinelli, R. Manera Escalero, D. Manuzzi, D. Marangotto, J. Maratas, J. F. Marchand, U. Marconi, S. Mariani, C. Marin Benito, M. Marinangeli, P. Marino, J. Marks, P. J. Marshall, G. Martellotti, L. Martinazzoli, M. Martinelli, D. Martinez Santos, F. Martinez Vidal, A. Massafferri, M. Materok, R. Matev, A. Mathad, Z. Mathe, V Matiunin, C. Matteuzzi, K. R. Mattioli, A. Mauri, E. Maurice, J. Mauricio, M. Mazurek, M. McCann, L. Mcconnell, T. H. Mcgrath, A. McNab, R. McNulty, J. Mead, B. Meadows, C. Meaux, G. Meier, N. Meinert, D. Melnychuk, S. Meloni, M. Merk, A. Merli, L. Meyer Garcia, M. Mikhasenko, D. A. Milanes, E. Millard, M. Milovanovic, M-N Minard, L. Minzoni, S. E. Mitchell, B. Mitreska, D. S. Mitzel, A. Modden, R. A. Mohammed, R. D. Moise, T. Mombacher, I. A. Monroy, S. Monteil, M. Morandin, G. Morello, M. J. Morello, J. Moron, A. B. Morris, A. G. Morris, R. Mountain, H. Mu, F. Muheim, M. Mukherjee, M. Mulder, D. Muller, K. Muller, C. H. Murphy, D. Murray, P. Muzzetto, P. Naik, T. Nakada, R. Nandakumar, T. Nanut, I Nasteva, M. Needham, I Neri, N. Neri, S. Neubert, N. Neufeld, R. Newcombe, T. D. Nguyen, C. Nguyen-Mau, E. M. Niel, S. Nieswand, N. Nikitin, N. S. Nolte, C. Nunez, A. Oblakowska-Mucha, V Obraztsov, D. P. O'Hanlon, R. Oldeman, M. E. Olivares, C. J. G. Onderwater, A. Ossowska, J. M. Otalora Goicochea, T. Ovsiannikova, P. Owen, A. Oyanguren, B. Pagare, P. R. Pais, T. Pajero, A. Palano, M. Palutan, Y. Pan, G. Panshin, A. Papanestis, M. Pappagallo, L. L. Pappalardo, C. Pappenheimer, W. Parker, C. Parkes, C. J. Parkinson, B. Passalacqua, G. Passaleva, A. Pastore, M. Patel, C. Patrignani, C. J. Pawley, A. Pearce, A. Pellegrino, M. Pepe Altarelli, S. Perazzini, D. Pereima, P. Perret, K. Petridis, A. Petrolini, A. Petrov, S. Petrucci, M. Petruzzo, A. Philippov, L. Pica, M. Piccini, B. Pietrzyk, G. Pietrzyk, M. Pili, D. Pinci, F. Pisani, A. Piucci, P. K. Resmi, V Placinta, J. Plews, M. Plo Casasus, F. Polci, M. Poli Lener, M. Poliakova, A. Poluektov, N. Polukhina, I Polyakov, E. Polycarpo, G. J. Pomery, S. Ponce, D. Popov, S. Popov, S. Poslavskii, K. Prasanth, L. Promberger, C. Prouve, V Pugatch, H. Pullen, G. Punzi, W. Qian, J. Qin, R. Quagliani, B. Quintana, N. Raab, R. I. Rabadan Trejo, B. Rachwal, J. H. Rademacker, M. Rama, M. Ramos Pernas, M. S. Rangel, F. Ratnikov, G. Raven, M. Reboud, F. Redi, F. Reiss, C. Remon Alepuz, Z. Ren, V Renaudin, R. Ribatti, S. Ricciardi, D. S. Richards, K. Rinnert, P. Robbe, A. Robert, G. Robertson, A. B. Rodrigues, E. Rodrigues, J. A. Rodriguez Lopez, A. Rollings, P. Roloff, V Romanovskiy, M. Romero Lamas, A. Romero Vidal, J. D. Roth, M. Rotondo, M. S. Rudolph, T. Ruf, J. Ruiz Vidal, A. Ryzhikov, J. Ryzka, J. J. Saborido Silva, N. Sagidova, N. Sahoo, B. Saitta, D. Sanchez Gonzalo, C. Sanchez Gras, 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, S. Schael, M. Schellenberg, M. Schiller, H. Schindler, M. Schmelling, B. Schmidt, O. Schneider, A. Schopper, M. Schubiger, S. Schulte, M. H. Schune, R. Schwemmer, B. Sciascia, A. Sciubba, S. Sellam, A. Semennikov, M. Senghi Soares, A. Sergi, N. Serra, L. Sestini, A. Seuthe, P. Seyfert, D. M. Shangase, M. Shapkin, I Shchemerov, L. Shchutska, T. Shears, L. Shekhtman, Z. Shen, V Shevchenko, E. B. Shields, E. Shmanin, J. D. Shupperd, B. G. Siddi, R. Silva Coutinho, G. Simi, S. Simone, I Skiba, N. Skidmore, T. Skwarnicki, M. W. Slater, J. C. Smallwood, J. G. Smeaton, A. Smetkina, E. Smith, M. Smith, A. Snoch, M. Soares, L. Soares Lavra, M. D. Sokoloff, F. J. P. Soler, A. Solovev, I Solovyev, F. L. Souza De Almeida, B. Souza De Paula, B. Spaan, E. Spadaro Norella, P. Spradlin, F. Stagni, M. Stahl, S. Stahl, P. Stefko, O. Steinkamp, S. Stemmle, O. Stenyakin, H. Stevens, S. Stone, M. E. Stramaglia, M. Straticiuc, D. Strekalina, S. Strokov, F. Suljik, J. Sun, L. Sun, Y. Sun, P. Svihra, P. N. Swallow, K. Swientek, A. Szabelski, T. Szumlak, M. Szymanski, S. Taneja, F. Teubert, E. Thomas, K. A. Thomson, M. J. Tilley, V Tisserand, S. T'Jampens, M. Tobin, S. Tolk, L. Tomassetti, D. Torres Machado, D. Y. Tou, M. Traill, M. T. Tran, E. Trifonova, 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, 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, H. Viemann, X. Vilasis-Cardona, E. Vilella Figueras, P. Vincent, G. Vitali, A. Vollhardt, D. Vom Bruch, A. Vorobyev, V. Vorobyev, N. Voropaev, R. Waldi, J. Walsh, C. Wang, J. Wang, J. Wang, J. Wang, J. Wang, M. Wang, R. Wang, Y. Wang, Z. Wang, H. M. Wark, N. K. Watson, S. G. Weber, D. Websdale, C. Weisser, B. D. C. Westhenry, D. J. White, M. Whitehead, D. Wiedner, G. Wilkinson, M. Wilkinson, I Williams, M. Williams, M. R. J. Williams, F. F. Wilson, W. Wislicki, M. Witek, L. Witola, G. Wormser, S. A. Wotton, H. 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, Y. Yang, Z. Yang, Z. Yang, Y. Yao, L. E. Yeomans, H. Yin, J. Yu, X. Yuan, O. Yushchenko, K. A. Zarebski, M. Zavertyaev, M. Zdybal, O. Zenaiev, M. Zeng, D. Zhang, L. Zhang, S. Zhang, Y. Zhang, Y. Zhang, A. Zhelezov, Y. Zheng, X. Zhou, Y. Zhou, X. Zhu, V Zhukov, J. B. Zonneveld, S. Zucchelli, D. Zuliani, G. Zunica

Summary: Using data from proton-proton collisions with an integrated luminosity of 5.0fb-1, the branching fraction of the B0 -> Ds+pi- decay was measured to be (19.4 +/- 1.8 +/- 1.3 +/- 1.2)x10-6, providing important information on non-factorizable strong interaction effects and the Cabibbo-Kobayashi-Maskawa matrix element Vub. Additionally, the collision energy dependence of the hadronisation-fraction ratio fs/fd was also determined through Bs0 -> Ds+pi- and B0 -> D-pi + decays.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Nuclear

Possibility of experimental study on nonleptonic weak decays

Yueling Yang, Liting Wang, Jinshu Huang, Qin Chang, Junfeng Sun

Summary: The study investigates nonleptonic weak decays induced by bottom and charm quark decays in the standard model using a simple factorization approach. The results suggest that several hundred or even thousands of events may be observable in future high-luminosity collider experiments.

CHINESE PHYSICS C (2023)

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Article Physics, Nuclear

nEXO: neutrinoless double beta decay search beyond 1028 year half-life sensitivity

G. Adhikari, S. Al Kharusi, E. Angelico, G. Anton, I. J. Arnquist, I Badhrees, J. Bane, V Belov, E. P. Bernard, T. Bhatta, A. Bolotnikov, P. A. Breur, J. P. Brodsky, E. Brown, T. Brunner, E. Caden, G. F. Cao, L. Cao, C. Chambers, B. Chana, S. A. Charlebois, D. Chernyak, M. Chiu, B. Cleveland, R. Collister, S. A. Czyz, J. Dalmasson, T. Daniels, L. Darroch, R. DeVoe, M. L. Di Vacri, J. Dilling, Y. Y. Ding, A. Dolgolenko, M. J. Dolinski, A. Dragone, J. Echevers, M. Elbeltagi, L. Fabris, D. Fairbank, W. Fairbank, J. Farine, S. Ferrara, S. Feyzbakhsh, Y. S. Fu, G. Gallina, P. Gautam, G. Giacomini, W. Gillis, C. Gingras, D. Goeldi, R. Gornea, G. Gratta, C. A. Hardy, K. Harouaka, M. Heffner, E. W. Hoppe, A. House, A. Iverson, A. Jamil, M. Jewell, X. S. Jiang, A. Karelin, L. J. Kaufman, I Kotov, R. Krucken, A. Kuchenkov, K. S. Kumar, Y. Lan, A. Larson, K. G. Leach, B. G. Lenardo, D. S. Leonard, G. Li, S. Li, Z. Li, C. Licciardi, R. Lindsay, R. MacLellan, M. Mahtab, P. Martel-Dion, J. Masbou, N. Massacret, T. McElroy, K. McMichael, M. Medina Peregrina, T. Michel, B. Mong, D. C. Moore, K. Murray, J. Nattress, C. R. Natzke, R. J. Newby, K. Ni, F. Nolet, O. Nusair, J. C. Nzobadila Ondze, K. Odgers, A. Odian, J. L. Orrell, G. S. Ortega, C. T. Overman, S. Parent, A. Perna, A. Piepke, A. Pocar, J-F Pratte, N. Priel, V Radeka, E. Raguzin, G. J. Ramonnye, T. Rao, H. Rasiwala, S. Rescia, F. Retiere, J. Ringuette, V Riot, T. Rossignol, P. C. Rowson, N. Roy, R. Saldanha, S. Sangiorgio, X. Shang, A. K. Soma, F. Spadoni, V Stekhanov, X. L. Sun, M. Tarka, S. Thibado, A. Tidball, J. Todd, T. Totev, S. Triambak, R. H. M. Tsang, T. Tsang, F. Vachon, V. Veeraraghavan, S. Viel, C. Vivo-Vilches, P. Vogel, J-L Vuilleumier, M. Wagenpfeil, T. Wager, M. Walent, K. Wamba, Q. Wang, W. Wei, L. J. Wen, U. Wichoski, S. Wilde, M. Worcester, S. X. Wu, W. H. Wu, X. Wu, Q. Xia, W. Yan, H. Yang, L. Yang, O. Zeldovich, J. Zhao, T. Ziegler

Summary: The nEXO neutrinoless double beta decay experiment aims to detect the decay in Xe-136 using a time projection chamber and 5000 kg of isotopically enriched liquid xenon. The experiment has made significant improvements in detector design, simulation accuracy, and data analysis methods, leading to a sensitivity prediction that exceeds the half-life of 10^28 years. It is expected that in 10 years of data taking, the nEXO experiment will reach a sensitivity of 1.35 x 10^28 years, covering a wide range of parameter space associated with neutrino mass ordering.

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS (2022)

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Article Physics, Multidisciplinary

Nuclear Charge Radii of the Nickel Isotopes 58-68,70Ni

S. Malbrunot-Ettenauer, S. Kaufmann, S. Bacca, C. Barbieri, J. Billowes, M. L. Bissell, K. Blaum, B. Cheal, T. Duguet, R. F. Garcia Ruiz, W. Gins, C. Gorges, G. Hagen, H. Heylen, J. D. Holt, G. R. Jansen, A. Kanellakopoulos, M. Kortelainen, T. Miyagi, P. Navratil, W. Nazarewicz, R. Neugart, G. Neyens, W. Noertershauser, S. J. Novario, T. Papenbrock, T. Ratajczyk, P. G. Reinhard, L. Rodriguez, R. Sanchez, S. Sailer, A. Schwenk, J. Simonis, V Soma, S. R. Stroberg, L. Wehner, C. Wraith, L. Xie, Z. Y. Xu, X. F. Yang, D. T. Yordanov

Summary: Collinear laser spectroscopy was used to study the nuclear charge radii of nickel isotopes. Three ab initio methods were compared, with agreement in differential radii but only the NNLOsat method showing consistent absolute radii. The Skyrme functional SV-min was found to match experimental results more closely in nuclear density functional theory.

PHYSICAL REVIEW LETTERS (2022)

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Article Physics, Multidisciplinary

Improved Limit on Tensor Currents in the Weak Interaction from 8Li β Decay

M. T. Burkey, G. Savard, A. T. Gallant, N. D. Scielzo, J. A. Clark, T. Y. Hirsh, L. Varriano, G. H. Sargsyan, K. D. Launey, M. Brodeur, D. P. Burdette, E. Heckmaier, K. Joerres, J. W. Klimes, K. Kolos, A. Laminack, K. G. Leach, A. F. Levand, B. Longfellow, B. Maass, S. T. Marley, G. E. Morgan, P. Mueller, R. Orford, S. W. Padgett, A. Perez Galvan, J. R. Pierce, D. Ray, R. Segel, K. Siegl, K. S. Sharma, B. S. Wang

Summary: We present the most precise measurement of tensor currents in the low-energy regime by examining the beta-(nu) over bar correlation of trapped Li-8 ions with the Beta-decay Paul Trap. The measured result is consistent with the standard model prediction.

PHYSICAL REVIEW LETTERS (2022)

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Article Physics, Applied

Material Effects on Electron-Capture Decay in Cryogenic Sensors

Amit Samanta, Stephan Friedrich, Kyle G. Leach, Vincenzo Lordi

Summary: Several current searches for physics beyond the standard model are focused on electron-capture decay of radionuclides implanted in cryogenic high-resolution sensors. Understanding the effects of the host material on the electron energy levels is necessary for accurate measurements. Using density-functional theory, the electronic structure of lithium in different atomic environments of a polycrystalline tantalum absorber film was modeled. The results show variation in binding energies and broadening of energy levels due to lattice sites, grain boundaries, and impurities, contributing to sensor peak broadening but not fully explaining it.

PHYSICAL REVIEW APPLIED (2023)

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Article Instruments & Instrumentation

Simulation studies of a 30-keV MR-ToF device for highly sensitive collinear laser spectroscopy

F. M. Maier, M. Vilen, I. Belosevic, F. Buchinger, C. Kanitz, S. Lechner, E. Leistenschneider, W. Noertershaeuser, P. Plattner, L. Schweikhard, S. Sels, F. Wienholtz, S. Malbrunot-Ettenauer

Summary: MIRACLS uses MR-ToF device to trap ion bunches of short-lived radioisotopes, allowing high-resolution CLS observation of more exotic radionuclides. Compared to traditional CLS, it increases the experimental sensitivity by more than one to two orders of magnitude by enabling multiple probing of the same ion bunch.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2023)

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Article Physics, Nuclear

Improved high-precision mass measurements of mid-shell neon isotopes

A. Jacobs, C. Andreoiu, J. Bergmann, T. Brunner, T. Dickel, I. Dillmann, E. Dunling, J. Flowerdew, L. Graham, G. Gwinner, Z. Hockenbery, W. J. Huang, B. Kootte, Y. Lan, K. G. Leach, E. Leistenschneider, D. Lunney, E. M. Lykiardopoulou, V. Monier, I. Mukul, S. F. Paul, W. R. Plass, M. P. Reiter, C. Scheidenberger, R. Thompson, J. L. Tracy, C. Will, M. E. Wieser, J. Dilling, A. A. Kwiatkowski

Summary: New mass values for short-lived isotopes 24-26Ne have been measured using the TITAN MR-TOF-MS. These isotopes were produced at TRIUMF's ISAC facility and undergo a least-squares adjustment to improve precision. The improved mass accuracy also leads to refinement in charge radii values, and helps reduce mass uncertainty in laser spectroscopy.

NUCLEAR PHYSICS A (2023)

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Article Physics, Multidisciplinary

First Evidence of Axial Shape Asymmetry and Configuration Coexistence in 74Zn: Suggestion for a Northern Extension of the N=40 Island of Inversion

M. Rocchini, P. E. Garrett, M. Zielinska, S. M. Lenzi, D. D. Dao, F. Nowacki, V. Bildstein, A. D. MacLean, B. Olaizola, Z. T. Ahmed, C. Andreoiu, A. Babu, G. C. Ball, S. S. Bhattacharjee, H. Bidaman, C. Cheng, R. Coleman, I. Dillmann, A. B. Garnsworthy, S. Gillespie, C. J. Griffin, G. F. Grinyer, G. Hackman, M. Hanley, A. Illana, S. Jones, A. T. Laffoley, K. G. Leach, R. S. Lubna, J. McAfee, C. Natzke, S. Pannu, C. Paxman, C. Porzio, A. J. Radich, M. M. Rajabali, F. Sarazin, K. Schwarz, S. Shadrick, S. Sharma, J. Suh, C. E. Svensson, D. Yates, T. Zidar

Summary: The excited states of N = 44 74Zn were investigated using gamma-ray spectroscopy, and different states were identified. The branching ratios and mixing ratios were measured for the transitions, allowing for the extraction of relative BOE2 thorn values. Some transitions were observed for the first time, and the results showed excellent agreement with theoretical calculations. The results were discussed in terms of shapes and neutron excitations.

PHYSICAL REVIEW LETTERS (2023)

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Article Quantum Science & Technology

Searches for Massive Neutrinos with Mechanical Quantum Sensors

Daniel Carney, Kyle G. Leach, David C. Moore

Summary: The development of quantum optomechanics has allowed for control and measurement of mechanical sensors in the quantum regime. By measuring the recoil of sensors containing isotopes that undergo nuclear decay, it is possible to reconstruct the total momentum of all emitted particles, including neutrinos. A nanometer-scale optically levitated sensor operated near the standard quantum limit can search for heavy sterile neutrinos and potentially measure the mass of light neutrino states.

PRX QUANTUM (2023)

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Article Instruments & Instrumentation

Increased beam energy as a pathway towards a highly selective and high-flux MR-ToF mass separator

F. M. Maier, F. Buchinger, L. Croquette, P. Fischer, H. Heylen, F. Hummer, C. Kanitz, A. A. Kwiatkowski, V. Lagaki, S. Lechner, E. Leistenschneider, G. Neyens, P. Plattner, A. Roitman, M. Rosenbusch, L. Schweikhard, S. Sels, M. Vilen, F. Wienholtz, S. Malbrunot-Ettenauer

Summary: Isobaric contamination is a common issue in radioactive ion beam (RIB) experiments. Multi-Reflection Time-of-Flight (MR-ToF) devices have been widely used for mass separation, but the presence of space-charge effects limits their application. This study uses ion-optical simulations to investigate different ion preparation schemes and MR-ToF operation, and suggests that advanced ion-beam preparation techniques can reduce processing time, but also increase space-charge effects.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2023)

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Article Physics, Nuclear

Updated evaluation of potential ultralow Q-value?-decay candidates

D. K. Keblbeck, R. Bhandari, N. D. Gamage, M. Horana Gamage, K. G. Leach, X. Mougeot, M. Redshaw

Summary: Ultralow Q-value 0 decays refer to decays with energies less than approximately 1 keV. These decays occur when the parent nucleus decays to an excited state in the daughter nucleus with an energy close to the Q value. They are of interest for neutrino mass determination experiments and atomic interference effects in nuclear decay. This paper provides an updated evaluation of atomic mass and nuclear energy-level data to identify potential ultralow Q-value 0 decay candidates. Precise atomic mass measurements using Penning trap mass spectrometry are needed for further study.

PHYSICAL REVIEW C (2023)

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Article Physics, Multidisciplinary

Doppler and sympathetic cooling for the investigation of short-lived radioactive ions

S. Sels, F. M. Maier, M. Au, P. Fischer, C. Kanitz, V Lagaki, S. Lechner, E. Leistenschneider, D. Leimbach, E. M. Lykiardopoulou, A. A. Kwiatkowski, T. Manovitz, Y. N. Vila Gracia, G. Neyens, P. Plattner, S. Rothe, L. Schweikhard, M. Vilen, R. N. Wolf, S. Malbrunot-Ettenauer

Summary: At radioactive ion beam (RIB) facilities, the ion-beam quality for subsequent experiments is improved by cooling and bunching ions of short-lived radionuclides in buffer-gas-filled Paul traps. Doppler and sympathetic cooling are employed in a Paul trap cooler-buncher to deliver even colder ions, beneficial to RIB experiments' sensitivity or accuracy. The improved ion-beam quality is demonstrated by reduced time-of-flight spread of the extracted ion bunches for Mg+, K+, and O-2(+) ion beams with respect to room-temperature buffer-gas cooling. Combining a low-pressure helium background gas with laser cooling enables the cooling of externally-produced hot ions down to a few Kelvin in a short timescale, making it suitable for cooling short-lived radioactive ions. The use of this technique in RIB research increases the mass-resolving power in a multireflection time-of-flight mass spectrometer, showing good agreement with simulations and guiding further improvements and applications. These results open a pathway to significant emittance improvement and unprecedented ion-beam qualities at RIB facilities using readily available standard equipment. This method also provides opportunities for future high-precision experiments with radioactive cold trapped ions.

PHYSICAL REVIEW RESEARCH (2022)

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Article Physics, Particles & Fields

Performance of novel VUV-sensitive Silicon Photo-Multipliers for nEXO

G. Gallina, Y. Guan, F. Retiere, G. Cao, A. Bolotnikov, I. Kotov, S. Rescia, A. K. Soma, T. Tsang, L. Darroch, T. Brunner, J. Bolster, J. R. Cohen, T. Pinto Franco, W. C. Gillis, H. Peltz Smalley, S. Thibado, A. Pocar, A. Bhat, A. Jamil, D. C. Moore, G. Adhikari, S. Al Kharusi, E. Angelico, I. J. Arnquist, P. Arsenault, I. Badhrees, J. Bane, V. Belov, E. P. Bernard, T. Bhatta, P. A. Breur, J. P. Brodsky, E. Brown, E. Caden, L. Cao, C. Chambers, B. Chana, S. A. Charlebois, D. Chernyak, M. Chiu, B. Cleveland, R. Collister, M. Cvitan, J. Dalmasson, T. Daniels, K. Deslandes, R. DeVoe, M. L. di Vacri, Y. Ding, M. J. Dolinski, A. Dragone, J. Echevers, B. Eckert, M. Elbeltagi, L. Fabris, W. Fairbank, J. Farine, Y. S. Fu, D. Gallacher, P. Gautam, G. Giacomini, C. Gingras, D. Goeldi, R. Gornea, G. Gratta, C. A. Hardy, S. Hedges, M. Heffner, E. Hein, J. Holt, E. W. Hoppe, J. Hoessl, A. House, W. Hunt, A. Iverson, X. S. Jiang, A. Karelin, L. J. Kaufman, R. Kruecken, A. Kuchenkov, K. S. Kumar, A. Larson, K. G. Leach, B. G. Lenardo, D. S. Leonard, G. Lessard, G. Li, S. Li, Z. Li, C. Licciardi, R. Lindsay, R. MacLellan, M. Mahtab, S. Majidi, C. Malbrunot, P. Margetak, P. Martel-Dion, L. Martin, J. Masbou, N. Massacret, K. McMichael, B. Mong, K. Murray, J. Nattress, C. R. Natzke, X. E. Ngwadla, J. C. Nzobadila Ondze, A. Odian, J. L. Orrell, G. S. Ortega, C. T. Overman, S. Parent, A. Perna, A. Piepke, N. Pletskova, J. F. Pratte, V. Radeka, E. Raguzin, G. J. Ramonnye, T. Rao, H. Rasiwala, K. Raymond, B. M. Rebeiro, G. Richardson, J. Ringuette, V. Riot, T. Rossignol, P. C. Rowson, L. Rudolph, R. Saldanha, S. Sangiorgio, X. Shang, F. Spadoni, V. Stekhanov, X. L. Sun, A. Tidball, T. Totev, S. Triambak, R. H. M. Tsang, O. A. Tyuka, F. Vachon, M. Vidal, S. Viel, G. Visser, M. Wagenpfeil, M. Walent, K. Wamba, Q. Wang, W. Wang, Y. Wang, M. Watts, W. Wei, L. J. Wen, U. Wichoski, S. Wilde, M. Worcester, W. H. Wu, X. Wu, L. Xie, W. Yan, H. Yang, L. Yang, O. Zeldovich, J. Zhao, T. Ziegler

Summary: Liquid xenon time projection chambers are promising detectors for neutrinoless double beta decay, and the nEXO collaboration has designed a tonne-scale chamber with a projected half-life sensitivity of 1.35 x 10^28 yr. This paper reports on the characterization of vacuum ultra-violet sensitive SiPMs designed for nEXO, as well as measurements on new test samples of previously characterized MPPCs. The results are used to provide updated estimates of the achievable energy resolution for the nEXO design.

EUROPEAN PHYSICAL JOURNAL C (2022)

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Proceedings Paper Engineering, Electrical & Electronic

Production of Radioactive Molecular Ions in Radiofrequency Quadrupole Gas-Reaction Cells

Chris R. J. Charles, Friedhelm Ames, Oliver Kester, S. Malbrunot-Ettenauer, Carla Babcock, Brad E. Schultz, Cameron Peters, Erin L. Flannigan, Jean-Francois Alary, Aurelia Laxdal, Peter Kunz, Jens Lassen, Andrea Teigelhoefer, Phil J. A. McCausland, Roberta Flemming

Summary: This study proposes using RFQ gas-reaction cells to produce radioactive molecules through room temperature reactions. This method allows for the production of a wide range of new and diverse radioactive molecular beams that are difficult or impossible to create using traditional targets, opening up possibilities for groundbreaking research in Beyond Standard Model physics.

19TH INTERNATIONAL CONFERENCE ON ION SOURCES - ICIS2021 (2022)

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Article Physics, Nuclear

High-precision half-life determination of 14O via direct β counting

S. Sharma, G. F. Grinyer, G. C. Ball, J. R. Leslie, C. E. Svensson, F. A. Ali, C. Andreoiu, N. Bernier, S. S. Bhattacharjee, V Bildstein, C. Burbadge, R. Caballero-Folch, R. Coleman, A. Diaz Varela, M. R. Dunlop, R. Dunlop, A. B. Garnsworthy, E. Gyabeng Fuakye, G. M. Huber, B. Jigmeddorj, K. Kapoor, A. T. Laffoley, K. G. Leach, J. Long, A. D. MacLean, C. R. Natzke, B. Olaizola, A. J. Radich, N. Saei, J. T. Smallcombe, A. Talebitaher, K. Whitmore, T. Zidar

Summary: The half-life of the superallowed Fermi beta(+) emitter O-14 has been determined with high precision through a direct beta counting experiment at the ISAC facility at TRIUMF. The new measurement is more precise and consistent with the previous world average. By combining this result with previous precise measurements, the overall uncertainty has been reduced by nearly a factor of 2. The new world average is T-1/2(O-14) = 70619.6(63) ms with a reduced chi(2) value of 0.87 obtained from 8 degrees of freedom.

EUROPEAN PHYSICAL JOURNAL A (2022)

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Article Physics, Nuclear

PUMA, antiProton unstable matter annihilation PUMA collaboration

T. Aumann, W. Bartmann, O. Boine-Frankenheim, A. Bouvard, A. Broche, F. Butin, D. Calvet, J. Carbonell, P. Chiggiato, H. De Gersem, R. De Oliveira, T. Dobers, F. Ehm, J. Ferreira Somoza, J. Fischer, M. Fraser, E. Friedrich, A. Frotscher, M. Gomez-Ramos, J-L Grenard, A. Hobl, G. Hupin, A. Husson, P. Indelicato, K. Johnston, C. Klink, Y. Kubota, R. Lazauskas, S. Malbrunot-Ettenauer, N. Marsic, W. F. O. Mueller, S. Naimi, N. Nakatsuka, R. Necca, D. Neidherr, G. Neyens, A. Obertelli, Y. Ono, S. Pasinelli, N. Paul, E. C. Pollacco, D. Rossi, H. Scheit, M. Schlaich, A. Schmidt, L. Schweikhard, R. Seki, S. Sels, E. Siesling, T. Uesaka, M. Vilen, M. Wada, F. Wienholtz, S. Wycech, S. Zacarias

Summary: PUMA is a nuclear physics experiment that aims to study the surface properties of stable and rare isotopes using low-energy antiprotons. By transporting low-energy antiprotons to radioactive nuclei, PUMA can measure the emitted radiation and gain insights into the isospin composition of the nuclear-radial-density tail.

EUROPEAN PHYSICAL JOURNAL A (2022)

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