| Title | First observation of the semileptonic decay Lambda(+)(c) -> pK(-) e(+) nu(e) |
| Authors | Ablikim, M. Achasov, M. N. Adlarson, P. Albrecht, M. Aliberti, R. Amoroso, A. An, M. R. An, Q. Bai, X. H. Bai, Y. Bakina, O. Ferroli, R. Baldini Balossino, I Ban, Y. Batozskaya, V Becker, D. Begzsuren, K. Berger, N. Bertani, M. Bettoni, D. Bianchi, F. Bloms, J. Bortone, A. Boyko, I Briere, R. A. Brueggemann, A. Cai, H. Cai, X. Calcaterra, A. Cao, G. F. Cao, N. Cetin, S. A. Chang, J. F. Chang, W. L. Chelkov, G. Chen, C. Chen, Chao Chen, G. Chen, H. S. Chen, M. L. Chen, S. J. Chen, S. M. Chen, T. Chen, X. R. Chen, X. T. Chen, Y. B. Chen, Z. J. Cheng, W. S. Choi, S. K. Chu, X. Cibinetto, G. Cossio, F. Cui, J. J. Dai, H. L. Dai, J. P. Dbeyssi, A. de Boer, R. E. Dedovich, D. Deng, Z. Y. Denig, A. Denysenko, I Destefanis, M. De Mori, F. Ding, Y. Dong, J. Dong, L. Y. Dong, M. Y. Dong, X. Du, S. X. Egorov, P. Fan, Y. L. Fang, J. Fang, S. S. Fang, W. X. Fang, Y. Farinelli, R. Fava, L. Feldbauer, F. Felici, G. Feng, C. Q. Feng, J. H. Fischer, K. Fritsch, M. Fritzsch, C. Fu, C. D. Gao, H. Gao, Y. N. Gao, Yang Garbolino, S. Garzia, I Ge, P. T. Ge, Z. W. Geng, C. Gersabeck, E. M. Gilman, A. Goetzen, K. Gong, L. Gong, W. X. Gradl, W. Greco, M. Gu, L. M. Gu, M. H. Gu, Y. T. Guan, C. Y. Guo, A. Q. Guo, L. B. Guo, R. P. Guo, Y. P. Guskov, A. Han, T. T. Han, W. Y. Hao, X. Q. Harris, F. A. He, K. K. He, K. L. Heinsius, F. H. Heinz, C. H. Heng, Y. K. Herold, C. Himmelreich, M. Hou, G. Y. Hou, Y. R. Hou, Z. L. Hu, H. M. Hu, J. F. Hu, T. Hu, Y. Huang, G. S. Huang, K. X. Huang, L. Q. Huang, L. Q. Huang, X. T. Huang, Y. P. Huang, Z. Hussain, T. Huesken, N. Imoehl, W. Irshad, M. Jackson, J. Jaeger, S. Janchiv, S. Jang, E. Jeong, J. H. Ji, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, Y. Y. Jia, Z. K. Jiang, H. B. Jiang, S. S. Jiang, X. S. Jiang, Y. Jiao, J. B. Jiao, Z. Jin, S. Jin, Y. Jing, M. Q. Johansson, T. Kalantar-Nayestanaki, N. Kang, X. S. Kappert, R. Kavatsyuk, M. Ke, B. C. Keshk, I. K. Khoukaz, A. Kiese, P. Kiuchi, R. Kliemt, R. Koch, L. Kolcu, O. B. Kopf, B. Kuemmel, M. Kuessner, M. Kupsc, A. Kuhn, W. Lane, J. J. Lange, J. S. Larin, P. Lavania, A. Lavezzi, L. Lei, Z. H. Leithoff, H. Lellmann, M. Lenz, T. Li, C. Li, C. Li, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. Li, H. Li, H. B. Li, H. J. Li, H. N. Li, J. Q. Li, J. S. Li, J. W. Li, Ke Li, L. J. Li, L. K. Li, Lei Li, M. H. Li, P. R. Li, S. X. Li, S. Y. Li, T. Li, W. D. Li, W. G. Li, X. H. Li, X. L. Li, Xiaoyu Liang, H. Liang, H. Liang, H. Liang, Y. F. Liang, Y. T. Liao, G. R. Liao, L. Z. Libby, J. Limphirat, A. Lin, C. X. Lin, D. X. Lin, T. Liu, B. J. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, G. M. Liu, H. 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, S. B. Liu, T. Liu, W. K. Liu, W. M. Liu, X. Liu, Y. Liu, Y. B. Liu, Z. A. Liu, Z. Q. Lou, X. C. Lu, F. X. Lu, H. J. Lu, J. G. Lu, X. L. Lu, Y. Lu, Y. P. Lu, Z. H. Luo, C. L. Luo, M. X. Luo, T. Luo, X. L. Lyu, X. R. Lyu, Y. F. Ma, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, R. Q. Ma, R. T. Ma, X. Y. Ma, Y. Maas, F. E. Maggiora, M. Maldaner, S. Malde, S. Malik, Q. A. Mangoni, A. Mao, Y. J. Mao, Z. P. Marcello, S. Meng, Z. X. Messchendorp, J. G. Mezzadri, G. Miao, H. Min, T. J. Mitchell, R. E. Mo, X. H. Muchnoi, N. Yu Nefedov, Y. Nerling, F. Nikolaev, I. B. Ning, Z. Nisar, S. Niu, Y. Olsen, S. L. Ouyang, Q. Pacetti, S. Pan, X. Pan, Y. Pathak, A. Pelizaeus, M. Peng, H. P. Peters, K. Pettersson, J. Ping, J. L. Ping, R. G. Plura, S. Pogodin, S. Prasad, V Qi, F. Z. Qi, H. Qi, H. R. Qi, M. Qi, T. Y. Qian, S. Qian, W. B. Qian, Z. Qiao, C. F. Qin, J. J. Qin, L. Q. Qin, X. P. Qin, X. S. Qin, Z. H. Qiu, J. F. Qu, S. Q. Rashid, K. H. Redmer, C. F. Ren, K. J. Rivetti, A. Rodin, V Rolo, M. Rong, G. Rosner, Ch Ruan, S. N. Sang, H. S. Sarantsev, A. Schelhaas, Y. Schnier, C. Schonning, K. Scodeggio, M. Shan, K. Y. Shan, W. Shan, X. Y. Shangguan, J. F. Shao, L. G. Shao, M. Shen, C. P. Shen, H. F. Shen, X. Y. Shi, B-A Shi, H. C. Shi, J. Y. Shi, Q. Q. Shi, R. S. Shi, X. Shi, X. D. Song, J. J. Song, W. M. Song, Y. X. Sosio, S. Spataro, S. Stieler, F. Su, K. X. Su, P. P. Su, Y-J Sun, G. X. Sun, H. Sun, H. K. Sun, J. F. Sun, L. Sun, S. S. Sun, T. Sun, W. Y. Sun, X. Sun, Y. J. Sun, Y. Z. Sun, Z. T. Tan, Y. H. Tan, Y. X. Tang, C. J. Tang, G. Y. Tang, J. Tao, L. Y. Tao, Q. T. Tat, M. Teng, J. X. Thoren, V Tian, W. H. Tian, Y. Uman, I Wang, B. Wang, B. L. Wang, C. W. Wang, D. Y. Wang, F. Wang, H. J. Wang, H. P. Wang, K. Wang, L. L. Wang, M. Wang, M. Z. Wang, Meng Wang, S. Wang, T. Wang, T. J. Wang, W. Wang, W. H. Wang, W. P. Wang, X. Wang, X. F. Wang, X. L. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. H. Wang, Y. Q. Wang, Yaqian Wang, Z. Wang, Z. Y. Wang, Ziyi Wei, D. H. Weidner, F. Wen, S. P. White, D. J. Wiedner, U. Wilkinson, G. Wolke, M. Wollenberg, L. Wu, J. F. Wu, L. H. Wu, L. J. Wu, X. Wu, X. H. Wu, Y. Wu, Z. Xia, L. Xiang, T. Xiao, D. Xiao, G. Y. Xiao, H. Xiao, S. Y. Xiao, Y. L. Xiao, Z. J. Xie, C. Xie, X. H. 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Zhao, Q. Zhao, S. J. Zhao, Y. B. Zhao, Y. X. Zhao, Z. G. Zhemchugov, A. Zheng, B. Zheng, J. P. Zheng, Y. H. Zhong, B. Zhong, C. Zhong, X. Zhou, H. Zhou, L. P. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, Y. Z. Zhu, J. Zhu, K. Zhu, K. J. Zhu, L. X. Zhu, S. H. Zhu, S. Q. Zhu, T. J. Zhu, W. J. Zhu, Y. C. Zhu, Z. A. Zou, B. S. Zou, J. H. |
| Affiliation | Inst High Energy Phys, Beijing 100049, Peoples R China Beihang Univ, Beijing 100191, Peoples R China Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China Bochum Ruhr Univ, D-44780 Bochum, Germany Carnegie Mellon Univ, Pittsburgh, PA 15213 USA Cent China Normal Univ, Wuhan 430079, Peoples R China Cent South Univ, Changsha 410083, Peoples R China China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China COMSATS Univ Islamabad, Lahore Campus,Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan Fudan Univ, Shanghai 200433, Peoples R China GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany Guangxi Normal Univ, Guilin 541004, Peoples R China Guangxi Univ, Nanning 530004, Peoples R China Hangzhou Normal Univ, Hangzhou 310036, Peoples R China Hebei Univ, Baoding 071002, Peoples R China Helmholtz Inst Mainz, Staudinger Weg 18, D-55099 Mainz, Germany Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China Henan Univ Sci & Technol, Luoyang 471003, Peoples R China Henan Univ Technol, Zhengzhou 450001, Peoples R China Huangshan Coll, Huangshan 245000, Peoples R China Hunan Normal Univ, Changsha 410081, Peoples R China Hunan Univ, Changsha 410082, Hunan, Peoples R China Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, India Indiana Univ, Bloomington, IN 47405 USA INFN Lab Nazl Frascati, I-00044 Frascati, Italy INFN Sez Perugia, I-06100 Perugia, Italy Univ Perugia, I-06100 Perugia, Italy INFN Sez Ferrara, I-44122 Ferrara, Italy Univ Ferrara, I-44122 Ferrara, Italy Inst Modern Phys, Lanzhou 730000, Peoples R China Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia Jilin Univ, Changchun 130012, Peoples R China Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany Lanzhou Univ, Lanzhou 730000, Peoples R China Liaoning Normal Univ, Dalian 116029, Peoples R China Liaoning Univ, Shenyang 110036, Peoples R China Nanjing Normal Univ, Nanjing 210023, Peoples R China Nanjing Univ, Nanjing 210093, Peoples R China Nankai Univ, Tianjin 300071, Peoples R China Natl Ctr Nucl Res, PL-02093 Warsaw, Poland North China Elect Power Univ, Beijing 102206, Peoples R China Peking Univ, Beijing 100871, Peoples R China Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China Shandong Normal Univ, Jinan 250014, Peoples R China Shandong Univ, Jinan 250100, Peoples R China Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China Shanxi Normal Univ, Linfen 041004, Shanxi, Peoples R China Shanxi Univ, Taiyuan 030006, Peoples R China Sichuan Univ, Chengdu 610064, Peoples R China Soochow Univ, Suzhou 215006, Peoples R China South China Normal Univ, Guangzhou 510006, Peoples R China Southeast Univ, Nanjing 211100, Peoples R China State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China State Key Lab Particle Detect & Elect, Hefei 230026, Peoples R China Sun Yat Sen Univ, Guangzhou 510275, Peoples R China Suranaree Univ Technol, Univ Ave 111, Nakhon Ratchasima 30000, Thailand Tsinghua Univ, Beijing 100084, Peoples R China Istinye Univ, Turkish Accelerator Ctr Particle Factory Grp, TR-34010 Istanbul, Turkey Near East Univ, Mersin 10, Nicosia, North Cyprus, Turkey Univ Chinese Acad Sci, Beijing 100049, Peoples R China Univ Groningen, NL-9747 AA Groningen, Netherlands Univ Hawaii, Honolulu, HI 96822 USA Univ Jinan, Jinan 250022, Peoples R China Univ Manchester, Oxford Rd, Manchester M13 9PL, Lancs, England Univ Munster, Wilhelm Klemm Str 9, D-48149 Munster, Germany Univ Oxford, Keble Rd, Oxford OX1 3RH, England Univ Sci & Technol Liaoning, Anshan 114051, Peoples R China Univ Sci & Technol China, Hefei 230026, Peoples R China Univ South China, Hengyang 421001, Peoples R China Univ Punjab, Lahore 54590, Pakistan Univ Turin, I-10125 Turin, Italy Univ Turin, Ist Nazl Fis Nucl, I-10125 Turin, Italy Univ Piemonte Orientale, I-15121 Alessandria, Italy Ist Nazl Fis Nucl, I-10125 Turin, Italy Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden Wuhan Univ, Wuhan 430072, Peoples R China Xinyang Normal Univ, Xinyang 464000, Peoples R China Yunnan Univ, Kunming 650500, Yunnan, Peoples R China Zhejiang Univ, Hangzhou 310027, Peoples R China Zhengzhou Univ, Zhengzhou 450001, Peoples R China Moscow Inst Phys & Technol, Moscow 141700, Russia Novosibirsk State Univ, Novosibirsk 630090, Russia NRC Kurchatov Inst, PNPI, Gatchina 188300, Russia Goethe Univ Frankfurt, D-60323 Frankfurt, Germany Minist Educ, Key Lab Particle Phys Astrophys & Cosmol, Shanghai 200240, Peoples R China Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China Inst Nucl & Particle Phys, Shanghai 200240, Peoples R China Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200443, Peoples R China Fudan Univ, Inst Modern Phys, Shanghai 200443, Peoples R China Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China Hunan Univ, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China South China Normal Univ, Inst Quantum Matter, Guangdong Prov Key Lab Nucl Sci, Guangzhou 510006, Peoples R China Lanzhou Univ, Frontiers Sci Ctr Rare Isotopes, Lanzhou 730000, Peoples R China Lanzhou Univ, Lanzhou Ctr Theoret Phys, Lanzhou 730000, Peoples R China IBA, Dept Math Sci, Karachi, Pakistan Renmin Univ China, Beijing 100872, Peoples R China |
| Keywords | LATTICE |
| Issue Date | 26-Dec-2022 |
| Publisher | PHYSICAL REVIEW D |
| Abstract | Using 4.5 fb(-1) of e(+)e(-) annihilation data samples collected at the center-of-mass energies ranging from 4.600 GeV to 4.699 GeV with the BESIII detector at the BEPCII collider, a first study of the semileptonic decays Lambda(+)(c) -> pK(-)e(+)v(e), Lambda(+)(c) ->Lambda (1520)e(+)v(e) and Lambda(+)(c) -> Lambda (1405)e(+)v(e) is performed. The Lambda(+)(c) -> pK(-)e(+)v(e) decay is observed with a significance of 8.2 sigma and the branching fraction is measured to be B (Lambda(+)(c) -> pK(-)e(+)v(e)) = (0.88 +/- 0.17(stat) +/- 0.07(syst)) x 10(-3). We also report evidence of Lambda(+)(c) ->Lambda (1520)e(+)v(e) and Lambda(+)(c) -> Lambda (1405)e(+)v(e) with significances of 3.3 sigma and 3.2 sigma , respectively, and measure B (Lambda(+)(c) ->Lambda (1520)e(+)v(e) ) = (1.02 +/- 0.52(stat) +/- 0.11(syst) ) x 10(-3) andB (Lambda(+)(c) ->Lambda (1405) [-> pK(-)]e(+)v(e)) = (0.42 +/- 0.19(stat) +/- 0.04(syst)) x 10(-3). Combining these with the inclusive semileptonic Lambda(+)(c) branching fraction measured by BESIII, the relative fraction is determined to be [B (Lambda(+)(c) -> pK(-)e(+)v(e))/[B (Lambda(+)(c) -> Xe(+)v(e))] = (2.1 +/- 0.4(stat) +/- 0.2(syst))%, which provides a clear confirmation that semileptonic Lambda(+)(c) decays are not saturated by the Lambda l(+)v(e) final state. |
| URI | http://hdl.handle.net/20.500.11897/671202 |
| ISSN | 2470-0010 |
| DOI | 10.1103/PhysRevD.106.112010 |
| Indexed | SCI(E) |
| Appears in Collections: | 其他实验室 核物理与核技术国家重点实验室 |
