Measurement of the absolute branching fraction of the inclusive semileptonic Λc⁺ decay

Medina Ablikim, Mikhail N. Achasov, Samer Ahmed, Malte Albrecht, M. Alekseev, Antonio Amoroso, Fenfen An, Qi An, Jingzhi Bai, Y. Bai, Olga Bakina, Rinaldo Baldini Ferroli, Yong Ban, D. W. Bennett, Jake V. Bennett, Niklaus Berger, Monica Bertani, Diego Bettoni, J. M. Bian, Fabrizio Bianchi, E. Boger, Igor R. Boyko, Roy A. Briere, H. Cai, Xiao Cai, O. Cakir, Alessandro Calcaterra, G. F. Cao, Serkant Ali Çetin, J. Chai, Jinfan Chang, Gueorgui A. Chelkov, G. Chen, Hesheng Chen, J. C. Chen, M. L. Chen, P. L. Chen, S. J. Chen, X. R. Chen, Yuanbo Chen, X. K. Chu, Gianluigi Cibinetto, Hongliang Dai, J. P. Dai, Alaa Dbeyssi, Dmitri V. Dedovich, Ziyan Deng, Achim Denig, Igor Denysenko, Marco Giovanni Maria Destefanis, Francesca De Mori, Y. Ding, C. Dong, J. Dong, Liaoyuan Dong, Mingyi Dong, Z. L. Dou, Shuxian Du, P. F. Duan, J. Fang, Shuangshi Fang, Y. Fang, Riccardo Farinelli, Luciano Fava, S. Fegan, Florian Feldbauer, Giulietto Felici, C. Q. Feng, Elisa Fioravanti, Miriam Fritsch, Chengdong Fu, Q. Gao, X. L. Gao, Y. Gao, Y. G. Gao, Z. Gao, B. Garillon, I. Garzia, Klaus Goetzen, L. Gong, Wenxuan Gong, Wolfgang Gradl, M. Greco, Minhao Gu, Y. T. Gu, Aiqiang Guo, R. P. Guo, Yuping Guo, Z. Haddadi, S. Han, Xiqing Hao, F. A. Harris, K. L. He, X. Q. He, Fritz-Herbert Heinsius, T. Held, Yuekun Heng, Tobias Holtmann, Zhilong Hou, Haiming Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, J. S. Huang, X. T. Huang, X. Z. Huang, Z. L. Huang, Tahir Hussain, Walter Ikegami Andersson, Quan Ji, Qingping Ji, X. B. Ji, X. L. Ji, Xiaoshan Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, Shan Jin, Y. Jin, Tord Johansson, A. Julin, Nasser Kalantar-Nayestanaki, Xiaolin Kang, Xiaolin Kang, Myroslav O. Kavatsyuk, Bai-Cian Ke, T. Khan, Alfons Khoukaz, P. Kiese, Ralf Kliemt, Leonard Koch, Onur Bugra Kolcu, Bertram Kopf, M. Kornicer, M. Kuemmel, Meike Küßner, M. Kuhlmann, Andrzej Kupsc, Wolfgang Kühn, Jens Sören Lange, M. Lara, Paul Larin, Lia Lavezzi, H. Leithoff, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, Haibo Li, Huijing Li, J. C. Li, Jin Li, K. J. Li, Kang Li, Ke Li, Lei Li, P. L. Li, Peirong Li, Q. Y. Li, Weidong Li, Weiguo Li, X. L. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, Guangrui Liao, D. X. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, Fu-Hu Liu, Fang Liu, Feng Liu, H. B. Liu, H. M. Liu, Huanhuan Liu, Huihui Liu, J. B. Liu, J. Y. Liu, K. Liu, K. Y. Liu, Ke Liu, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Zhen-An Liu, Zhiqing Liu, Y. F. Long, Xinchou Lou, H. J. Lu, Junguang Lu, Y. Lu, Yunpeng Lu, Chenglin Luo, M. X. Luo, X. L. Luo, Xiao-Rui Lyu, Fengcai Ma, Hailong Ma, Lianliang Ma, M. M. Ma, Qiumei Ma, T. Ma, X. N. Ma, Xiaoyan Ma, Y. M. Ma, Frank E. Maas, Marco Maggiora, Qadeer Afzal Malik, Yajun Mao, Zepu Mao, Simonetta Marcello, Z. X. Meng, Johannes Gerhardus Messchendorp, Giulio Mezzadri, J. Min, T. J. Min, Ryan Edward Mitchell, Xiaohu Mo, Y. J. Mo, C. Morales Morales, Nikolai Yu. Muchnoi, H. Muramatsu, A. Mustafa, Yury Nefedov, Frank Nerling, Ivan Borisovich Nikolaev, Z. Ning, Shabana Nisar, S. L. Niu, X. Y. Niu, Stephen L. Olsen, Qun Ouyang, Simone Pacetti, Y. Pan, M. Papenbrock, P. Patteri, Marc Pelizäus, J. Pellegrino, H. P. Peng, Klaus Peters, J. Pettersson, J. L. Ping, R. G. Ping, A. Pitka, Ronald Poling, Vindhyawasini Prasad, H. R. Qi, Ming Qi, Tianyu Qi, S. Qian, Congfeng Qiao, N. Qin, X. S. Qin, Zhonghua Qin, Jinfa Qiu, K. H. Rashid, Christoph Florian Redmer, M. Richter, M. Ripka, Manuel Dionisio Da Rocha Rolo, Gang Rong, Christoph Rosner, Andrei V. Sarantsev, M. Savrié, Claudius Schnier, Karin Schönning, Wei Shan, M. Shao, Chengping Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, X. Shi, J. J. Song, Weimin Song, X. Y. Song, Stefano Sosio, C. Sowa, Stefano Spataro, Gongxing Sun, J. F. Sun, Liang Sun, S. S. Sun, X. H. Sun, Y. J. Sun, Y. K. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, G. Y. Tang, X. Tang, I. Tapan, M. Tiemens, B. Tsednee, Ismail Uman, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, Dan Wang, K. Wang, Liangliang Wang, L. S. Wang, M. Wang, Meng Wang, P. Wang, P. L. Wang, Weiping Wang, Xiongfei Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. Y. Wang, Zongyuan Wang, T. Weber, D. H. Wei, P. Weidenkaff, Shuopin Wen, Ulrich Wiedner, Magnus Wolke, Linghui Wu, Lianjin Wu, Z. Wu, L. Xia, Y. Xia, D. Xiao, H. Xiao, Y. J. Xiao, Zhenjun Xiao, Y. G. Xie, Y. H. Xie, X. A. Xiong, Q. L. Xiu, Guofa Xu, J. J. Xu, L. Xu, Q. J. Xu, Q. N. Xu, Xinping Xu, Liang Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, Hongxun Yang, L. Yang, Y. H. Yang, Yongxu Yang, M. Ye, Minghan Ye, J. H. Yin, Z. Y. You, Boxiang Yu, C. X. Yu, J. S. Yu, Chang-Zheng Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, Hongyu Zhang, J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, Jianyong Zhang, J. Z. Zhang, K. Zhang, L. Zhang, S. Q. Zhang, X. Y. Zhang, Y. H. Zhang, Yateng Zhang, Yang Zhang, Yao Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, Ming-Gang Zhao, Q. Zhao, Shujun Zhao, T. C. Zhao, Yubin Zhao, Zhengguo Zhao, Alexey Zhemchugov, Bo Zheng, Jianping Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, J. Zhu, J. Zhu, K. Zhu, Kejun Zhu, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Zian Zhu, J. Zhuang, B. S. Zou, Jiaheng Zou

  • Using a data sample of 𝑒+⁢𝑒− collisions corresponding to an integrated luminosity of 567  pb−1 collected at a center-of-mass energy of √𝑠=4.6  GeV with the BESIII detector, we measure the absolute branching fraction of the inclusive semileptonic Λ+𝑐 decay with a double-tag method. We obtain ℬ⁡(Λ+𝑐→𝑋⁢𝑒+⁢𝜈𝑒)=(3.95±0.34±0.09)%, where the first uncertainty is statistical and the second systematic. Using the known Λ+𝑐 lifetime and the charge-averaged semileptonic decay width of nonstrange charmed mesons (𝐷0 and 𝐷+), we obtain the ratio of the inclusive semileptonic decay widths Γ⁡(Λ+𝑐→𝑋⁢𝑒+⁢𝜈𝑒)/¯Γ⁡(𝐷→𝑋⁢𝑒+⁢𝜈𝑒)=1.26±0.12.

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Author:Medina AblikimORCiD, Mikhail N. AchasovORCiD, Samer AhmedGND, Malte AlbrechtORCiDGND, M. Alekseev, Antonio AmorosoORCiD, Fenfen AnORCiD, Qi An, Jingzhi Bai, Y. Bai, Olga Bakina, Rinaldo Baldini Ferroli, Yong BanORCiD, D. W. Bennett, Jake V. BennettORCiD, Niklaus BergerORCiDGND, Monica BertaniORCiD, Diego BettoniORCiD, J. M. Bian, Fabrizio BianchiORCiD, E. Boger, Igor R. BoykoORCiD, Roy A. BriereORCiD, H. Cai, Xiao CaiORCiD, O. Cakir, Alessandro CalcaterraORCiD, G. F. Cao, Serkant Ali ÇetinORCiD, J. Chai, Jinfan ChangORCiD, Gueorgui A. ChelkovORCiD, G. Chen, Hesheng ChenORCiD, J. C. Chen, M. L. Chen, P. L. Chen, S. J. Chen, X. R. Chen, Yuanbo ChenORCiD, X. K. Chu, Gianluigi CibinettoORCiD, Hongliang DaiORCiD, J. P. Dai, Alaa DbeyssiORCiD, Dmitri V. Dedovich, Ziyan DengORCiD, Achim DenigORCiD, Igor Denysenko, Marco Giovanni Maria DestefanisORCiDGND, Francesca De MoriORCiD, Y. Ding, C. Dong, J. Dong, Liaoyuan DongORCiD, Mingyi DongORCiD, Z. L. Dou, Shuxian Du, P. F. Duan, J. Fang, Shuangshi FangORCiD, Y. Fang, Riccardo FarinelliORCiD, Luciano FavaORCiD, S. Fegan, Florian FeldbauerGND, Giulietto FeliciORCiD, C. Q. Feng, Elisa FioravantiORCiD, Miriam FritschORCiDGND, Chengdong FuORCiD, Q. Gao, X. L. Gao, Y. Gao, Y. G. Gao, Z. Gao, B. Garillon, I. Garzia, Klaus GoetzenORCiDGND, L. Gong, Wenxuan GongORCiD, Wolfgang GradlORCiDGND, M. Greco, Minhao GuORCiD, Y. T. Gu, Aiqiang GuoORCiD, R. P. Guo, Yuping GuoORCiD, Z. Haddadi, S. Han, Xiqing Hao, F. A. Harris, K. L. He, X. Q. He, Fritz-Herbert HeinsiusORCiDGND, T. Held, Yuekun HengORCiD, Tobias HoltmannGND, Zhilong HouORCiD, Haiming HuORCiD, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, J. S. Huang, X. T. Huang, X. Z. Huang, Z. L. Huang, Tahir HussainORCiD, Walter Ikegami AnderssonORCiD, Quan JiORCiD, Qingping JiORCiD, X. B. Ji, X. L. Ji, Xiaoshan JiangORCiD, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, Shan JinORCiD, Y. Jin, Tord JohanssonORCiD, A. Julin, Nasser Kalantar-NayestanakiORCiD, Xiaolin KangORCiD, Xiaolin KangORCiD, Myroslav O. Kavatsyuk, Bai-Cian KeORCiD, T. Khan, Alfons KhoukazORCiDGND, P. Kiese, Ralf KliemtORCiD, Leonard KochGND, Onur Bugra KolcuORCiD, Bertram KopfGND, M. Kornicer, M. Kuemmel, Meike KüßnerORCiDGND, M. Kuhlmann, Andrzej KupscORCiD, Wolfgang KühnORCiD, Jens Sören LangeORCiDGND, M. Lara, Paul LarinGND, Lia LavezziORCiD, H. Leithoff, C. Leng, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, Haibo LiORCiD, Huijing LiORCiD, J. C. Li, Jin Li, K. J. Li, Kang Li, Ke Li, Lei LiORCiD, P. L. Li, Peirong LiORCiD, Q. Y. Li, Weidong LiORCiD, Weiguo LiORCiD, X. L. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, Guangrui LiaoORCiD, D. X. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, Fu-Hu LiuORCiD, Fang Liu, Feng Liu, H. B. Liu, H. M. Liu, Huanhuan LiuORCiD, Huihui Liu, J. B. Liu, J. Y. Liu, K. Liu, K. Y. Liu, Ke LiuORCiD, L. D. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Zhen-An LiuORCiDGND, Zhiqing LiuORCiD, Y. F. Long, Xinchou LouORCiD, H. J. Lu, Junguang LuORCiD, Y. Lu, Yunpeng LuORCiD, Chenglin LuoORCiD, M. X. Luo, X. L. Luo, Xiao-Rui LyuORCiD, Fengcai Ma, Hailong MaORCiD, Lianliang MaORCiD, M. M. Ma, Qiumei MaORCiD, T. Ma, X. N. Ma, Xiaoyan MaORCiD, Y. M. Ma, Frank E. MaasORCiDGND, Marco MaggioraORCiD, Qadeer Afzal Malik, Yajun Mao, Zepu Mao, Simonetta MarcelloORCiD, Z. X. Meng, Johannes Gerhardus MesschendorpORCiDGND, Giulio MezzadriORCiD, J. Min, T. J. Min, Ryan Edward Mitchell, Xiaohu MoORCiD, Y. J. Mo, C. Morales Morales, Nikolai Yu. MuchnoiORCiDGND, H. Muramatsu, A. Mustafa, Yury NefedovORCiD, Frank NerlingORCiD, Ivan Borisovich NikolaevORCiD, Z. Ning, Shabana Nisar, S. L. Niu, X. Y. Niu, Stephen L. OlsenORCiD, Qun OuyangORCiD, Simone PacettiORCiD, Y. Pan, M. Papenbrock, P. Patteri, Marc PelizäusGND, J. Pellegrino, H. P. Peng, Klaus PetersORCiDGND, J. Pettersson, J. L. Ping, R. G. Ping, A. Pitka, Ronald PolingORCiD, Vindhyawasini PrasadORCiD, H. R. Qi, Ming QiORCiD, Tianyu QiORCiD, S. Qian, Congfeng Qiao, N. Qin, X. S. Qin, Zhonghua QinORCiD, Jinfa QiuORCiD, K. H. Rashid, Christoph Florian RedmerORCiDGND, M. Richter, M. Ripka, Manuel Dionisio Da Rocha RoloORCiD, Gang RongORCiD, Christoph RosnerORCiDGND, Andrei V. SarantsevGND, M. Savrié, Claudius SchnierGND, Karin SchönningORCiD, Wei ShanORCiD, M. Shao, Chengping ShenORCiD, P. X. Shen, X. Y. Shen, H. Y. Sheng, X. Shi, J. J. Song, Weimin SongORCiD, X. Y. Song, Stefano SosioORCiD, C. Sowa, Stefano SpataroORCiD, Gongxing SunORCiD, J. F. Sun, Liang SunORCiD, S. S. Sun, X. H. Sun, Y. J. Sun, Y. K. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, G. Y. Tang, X. Tang, I. Tapan, M. Tiemens, B. Tsednee, Ismail UmanORCiDGND, G. S. Varner, B. Wang, B. L. Wang, D. Wang, D. Y. Wang, Dan Wang, K. Wang, Liangliang WangORCiD, L. S. Wang, M. Wang, Meng WangORCiD, P. Wang, P. L. Wang, Weiping WangORCiD, Xiongfei WangORCiD, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. Y. Wang, Zongyuan WangORCiD, T. Weber, D. H. Wei, P. Weidenkaff, Shuopin WenORCiD, Ulrich WiednerORCiDGND, Magnus WolkeGND, Linghui WuORCiD, Lianjin WuORCiD, Z. Wu, L. Xia, Y. Xia, D. Xiao, H. Xiao, Y. J. Xiao, Zhenjun XiaoORCiD, Y. G. Xie, Y. H. Xie, X. A. Xiong, Q. L. Xiu, Guofa XuORCiD, J. J. Xu, L. Xu, Q. J. Xu, Q. N. Xu, Xinping XuORCiD, Liang YanORCiD, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, Hongxun YangORCiD, L. Yang, Y. H. Yang, Yongxu Yang, M. Ye, Minghan Ye, J. H. Yin, Z. Y. You, Boxiang YuORCiD, C. X. Yu, J. S. Yu, Chang-Zheng YuanORCiD, Y. Yuan, A. Yuncu, A. A. Zafar, Y. Zeng, Z. Zeng, B. X. Zhang, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, Hongyu ZhangORCiD, J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, Jianyong ZhangORCiD, J. Z. Zhang, K. Zhang, L. Zhang, S. Q. Zhang, X. Y. Zhang, Y. H. Zhang, Yateng ZhangORCiD, Yang Zhang, Yao Zhang, Yu Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, J. Y. Zhao, J. Z. Zhao, Lei ZhaoORCiD, Ling Zhao, Ming-Gang ZhaoORCiD, Q. Zhao, Shujun Zhao, T. C. Zhao, Yubin ZhaoORCiD, Zhengguo ZhaoORCiD, Alexey ZhemchugovORCiD, Bo ZhengORCiD, Jianping ZhengORCiD, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, J. Zhu, J. Zhu, K. Zhu, Kejun ZhuORCiD, S. Zhu, S. H. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Zian ZhuORCiD, J. Zhuang, B. S. Zou, Jiaheng ZouORCiD
URN:urn:nbn:de:hebis:30:3-848525
DOI:https://doi.org/10.1103/PhysRevLett.121.251801
ISSN:1079-7114
ISSN:0031-9007
ArXiv Id:http://arxiv.org/abs/1805.09060
Parent Title (English):Physical review letters
Publisher:American Physical Society
Place of publication:College Park, Md.
Document Type:Article
Language:English
Date of Publication (online):2018/12/18
Date of first Publication:2018/12/18
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Creating Corporation:BESIII Collaboration
Release Date:2024/07/02
Volume:121
Issue:2, 251801
Article Number:251801
Page Number:8
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International