Measurements of weak decay asymmetries of Λc⁺ → pKₛ⁰, Λπ⁺, Σ⁺π⁰, and Σ⁰π⁺

Medina Ablikim, Mikhail N. Achasov, Patrik Adlarson, Samer Ahmed, Malte Albrecht, M. Alekseev, Antonio Amoroso, Fenfen An, Qi An, Y. Bai, Olga Bakina, Rinaldo Baldini Ferroli, Yong Ban, Khurelbaatar Begzsuren, Jake V. Bennett, Niklaus Berger, Monica Bertani, Diego Bettoni, Fabrizio Bianchi, Jacek Biernat, Johannes Bloms, Igor R. Boyko, Roy A. Briere, H. Cai, Xiao Cai, Alessandro Calcaterra, G. F. Cao, Ning Cao, Serkant Ali Çetin, J. Chai, Jinfan Chang, W. L. Chang, Gueorgui A. Chelkov, D. Y. Chen, G. Chen, Hesheng Chen, J. C. Chen, M. L. Chen, S. J. Chen, Yuanbo Chen, W. Cheng, Gianluigi Cibinetto, Fabio Cossio, X. F. Cui, Hongliang Dai, J. P. Dai, Xinchen 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, J. Z. Fan, J. Fang, Shuangshi Fang, Y. Fang, Riccardo Farinelli, Luciano Fava, Florian Feldbauer, Giulietto Felici, C. Q. Feng, Miriam Fritsch, Chengdong Fu, Ying Fu, Q. Gao, X. L. Gao, Y. Gao, Y. Gao, Y. G. Gao, Z. Gao, B. Garillon, I. Garzia, Evelina Gersabeck, Alexander Gilman, Klaus Goetzen, L. Gong, Wenxuan Gong, Wolfgang Gradl, M. Greco, L. M. Gu, Minhao Gu, S. Gu Gu, Y. T. Gu, Aiqiang Guo, L. B. Guo, R. P. Guo, Yuping Guo, Alexey Guskov, S. Han, Xiqing Hao, F. A. Harris, K. L. He, Fritz-Herbert Heinsius, T. Held, Yuekun Heng, Y. R. Hou, 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, Nils Huesken, Tahir Hussain, Walter Ikegami Andersson, William Imoehl, M. Irshad, Quan Ji, Qingping Ji, X. B. Ji, X. L. Ji, H. L. Jiang, Xiaoshan Jiang, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, Shan Jin, Y. Jin, Tord Johansson, Nasser Kalantar-Nayestanaki, Xiaolin Kang, Rosa Kappert, Myroslav O. Kavatsyuk, Bai-Cian Ke, Iman Keshk, T. Khan, Alfons Khoukaz, P. Kiese, Ryuta Kiuchi, Ralf Kliemt, Leonard Koch, Onur Bugra Kolcu, Bertram Kopf, M. Kuemmel, Meike Küßner, Andrzej Kupsc, M. Kurth, M. G. Kurth, Wolfgang Kühn, Jens Sören Lange, Paul Larin, Lia Lavezzi, H. Leithoff, Thomas Lenz, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, Haibo Li, Huijing Li, J. C. Li, J. W. Li, Ke Li, L. K. Li, Lei Li, P. L. Li, Peirong Li, Q. Y. Li, Weidong Li, Weiguo Li, X. H. Li, X. L. Li, X. N. Li, X. Q. Li, Z. B. Li, Z. Y. Li, H. Liang, H. Liang, Y. F. Liang, Y. T. Liang, Guangrui Liao, L. Z. Liao, J. Libby, C. X. Lin, D. X. Lin, Y. J. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, D. Y. 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. Y. Liu, Ke Liu, Q. Liu, S. B. Liu, Tong Liu, X. Liu, X. Y. Liu, Y. B. Liu, Zhen-An Liu, Zhiqing Liu, Y. F. Long, Xinchou Lou, H. J. Lu, J. D. Lu, Junguang Lu, Y. Lu, Yunpeng Lu, Chenglin Luo, M. X. Luo, P. W. Luo, Tao Luo, X. L. Luo, S. Lusso, Xiao-Rui Lyu, Fengcai Ma, Hailong Ma, Lianliang Ma, M. M. Ma, Qiumei Ma, X. N. Ma, X. X. Ma, Xiaoyan Ma, Y. M. Ma, Frank E. Maas, Marco Maggiora, Stephan Maldaner, Sneha Malde, Qadeer Afzal Malik, Alessio Mangoni, 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, Simon Nakhoul, Yury Nefedov, Frank Nerling, Ivan Borisovich Nikolaev, Z. Ning, Shabana Nisar, S. L. Niu, Stephen L. Olsen, Qun Ouyang, Simone Pacetti, Y. Pan, M. Papenbrock, P. Patteri, Marc Pelizäus, H. P. Peng, Klaus Peters, J. Pettersson, J. L. Ping, R. G. Ping, A. Pitka, Ronald Poling, Vindhyawasini Prasad, Ming Qi, Tianyu Qi, S. Qian, Congfeng Qiao, N. Qin, Xiaoping Qin, X. S. Qin, Zhonghua Qin, Jinfa Qiu, S. Q. Qu, K. H. Rashid, Christoph Florian Redmer, M. Richter, M. Ripka, Angelo Rivetti, Viktor Rodin, Manuel Dionisio Da Rocha Rolo, Gang Rong, Christoph Rosner, Marcel Andre Rump, Andrei V. Sarantsev, M. Savrié, Karin Schönning, Wei Shan, Xinyu Shan, M. Shao, Chengping Shen, P. X. Shen, X. Y. Shen, H. Y. Sheng, X. Shi, Xiaodong Shi, J. J. Song, Q. Q. Song, X. Y. Song, Stefano Sosio, C. Sowa, Stefano Spataro, F. F. Sui, 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, Y. T. Tan, C. J. Tang, G. Y. Tang, X. Tang, Viktor Thoren, B. Tsednee, Ismail Uman, B. Wang, B. L. Wang, C. W. Wang, D. Y. Wang, H. H. Wang, K. Wang, Liangliang Wang, L. S. Wang, M. Wang, M. Z. Wang, Meng Wang, P. L. Wang, R. M. Wang, Weiping Wang, X. Wang, Xiongfei Wang, X. L. Wang, Y. Wang, Y. Wang, Y. F. Wang, Z. Wang, Z. G. Wang, Z. Y. Wang, Zongyuan Wang, T. Weber, D. H. Wei, P. Weidenkaff, H. W. Wen, Shuopin Wen, Ulrich Wiedner, Guy Wilkinson, Magnus Wolke, Linghui Wu, Lianjin Wu, Z. Wu, L. Xia, Y. Xia, S. Y. Xiao, Y. J. Xiao, Zhenjun Xiao, Y. G. Xie, Y. H. Xie, T. Y. Xing, X. A. Xiong, Q. L. Xiu, Guofa Xu, L. Xu, Q. J. Xu, W. Xu, Xinping Xu, F. Yan, Liang Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, Hongxun Yang, L. Yang, R. X. Yang, S. L. Yang, Y. H. Yang, Yongxu Yang, Yifan Yang, Z. Q. Yang, M. Ye, Minghan Ye, J. H. Yin, Z. Y. You, Boxiang Yu, C. X. Yu, J. S. Yu, Chang-Zheng Yuan, X. Q. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, Y. 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. F. Zhang, T. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Yateng Zhang, Yang Zhang, Yao Zhang, Yi 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. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, L. P. Zhou, Q. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, Xiaoyu Zhou, Xu Zhou, A. N. Zhu, J. Zhu, J. Zhu, K. Zhu, Kejun Zhu, S. H. Zhu, W. J. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Zian Zhu, J. Zhuang, B. S. Zou, Jiaheng Zou

  • Using 𝑒+⁢𝑒−→Λ+𝑐⁢¯Λ−𝑐 production from a 567  pb−1 data sample collected by BESIII at 4.6 GeV, a full angular analysis is carried out simultaneously on the four decay modes of Λ+𝑐→𝑝⁢𝐾0𝑆, Λ⁢𝜋+, Σ+⁢𝜋0, and Σ0⁢𝜋+. For the first time, the Λ+𝑐 transverse polarization is studied in unpolarized 𝑒+⁢𝑒− collisions, where a nonzero effect is observed with a statistical significance of 2.1⁢𝜎. The decay asymmetry parameters of the Λ+𝑐 weak hadronic decays into 𝑝⁢𝐾0𝑆, Λ⁢𝜋+, Σ+⁢𝜋0 and Σ0⁢𝜋+ are measured to be 0.18±0.43⁢(stat)±0.14⁢(syst), −0.80±0.11⁢(stat)±0.02⁢(syst), −0.57±0.10⁢(stat)±0.07⁢(syst), and −0.73±0.17⁢(stat)±0.07⁢(syst), respectively. In comparison with previous results, the measurements for the Λ⁢𝜋+ and Σ+⁢𝜋0 modes are consistent but with improved precision, while the parameters for the 𝑝⁢𝐾0𝑆 and Σ0⁢𝜋+ modes are measured for the first time.

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Author:Medina AblikimORCiD, Mikhail N. AchasovORCiD, Patrik AdlarsonORCiD, Samer AhmedGND, Malte AlbrechtORCiDGND, M. Alekseev, Antonio AmorosoORCiD, Fenfen AnORCiD, Qi An, Y. Bai, Olga Bakina, Rinaldo Baldini Ferroli, Yong BanORCiD, Khurelbaatar Begzsuren, Jake V. BennettORCiD, Niklaus BergerORCiDGND, Monica BertaniORCiD, Diego BettoniORCiD, Fabrizio BianchiORCiD, Jacek BiernatORCiD, Johannes BlomsGND, Igor R. BoykoORCiD, Roy A. BriereORCiD, H. Cai, Xiao CaiORCiD, Alessandro CalcaterraORCiD, G. F. Cao, Ning CaoORCiD, Serkant Ali ÇetinORCiD, J. Chai, Jinfan ChangORCiD, W. L. Chang, Gueorgui A. ChelkovORCiD, D. Y. Chen, G. Chen, Hesheng ChenORCiD, J. C. Chen, M. L. Chen, S. J. Chen, Yuanbo ChenORCiD, W. Cheng, Gianluigi CibinettoORCiD, Fabio CossioORCiD, X. F. Cui, Hongliang DaiORCiD, J. P. Dai, Xinchen DaiORCiD, 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, J. Z. Fan, J. Fang, Shuangshi FangORCiD, Y. Fang, Riccardo FarinelliORCiD, Luciano FavaORCiD, Florian FeldbauerGND, Giulietto FeliciORCiD, C. Q. Feng, Miriam FritschORCiDGND, Chengdong FuORCiD, Ying Fu, Q. Gao, X. L. Gao, Y. Gao, Y. Gao, Y. G. Gao, Z. Gao, B. Garillon, I. Garzia, Evelina GersabeckORCiDGND, Alexander GilmanORCiD, Klaus GoetzenORCiDGND, L. Gong, Wenxuan GongORCiD, Wolfgang GradlORCiDGND, M. Greco, L. M. Gu, Minhao GuORCiD, S. Gu Gu, Y. T. Gu, Aiqiang GuoORCiD, L. B. Guo, R. P. Guo, Yuping GuoORCiD, Alexey GuskovORCiD, S. Han, Xiqing Hao, F. A. Harris, K. L. He, Fritz-Herbert HeinsiusORCiDGND, T. Held, Yuekun HengORCiD, Y. R. Hou, 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, Nils HueskenORCiDGND, Tahir HussainORCiD, Walter Ikegami AnderssonORCiD, William ImoehlORCiD, M. Irshad, Quan JiORCiD, Qingping JiORCiD, X. B. Ji, X. L. Ji, H. L. Jiang, Xiaoshan JiangORCiD, X. Y. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, Shan JinORCiD, Y. Jin, Tord JohanssonORCiD, Nasser Kalantar-NayestanakiORCiD, Xiaolin KangORCiD, Rosa KappertORCiD, Myroslav O. Kavatsyuk, Bai-Cian KeORCiD, Iman KeshkGND, T. Khan, Alfons KhoukazORCiDGND, P. Kiese, Ryuta Kiuchi, Ralf KliemtORCiD, Leonard KochGND, Onur Bugra KolcuORCiD, Bertram KopfGND, M. Kuemmel, Meike KüßnerORCiDGND, Andrzej KupscORCiD, M. Kurth, M. G. Kurth, Wolfgang KühnORCiD, Jens Sören LangeORCiDGND, Paul LarinGND, Lia LavezziORCiD, H. Leithoff, Thomas LenzORCiDGND, C. Li, Cheng Li, D. M. Li, F. Li, F. Y. Li, G. Li, Haibo LiORCiD, Huijing LiORCiD, J. C. Li, J. W. Li, Ke Li, L. K. Li, Lei LiORCiD, P. L. Li, Peirong LiORCiD, Q. Y. Li, Weidong LiORCiD, Weiguo LiORCiD, X. H. Li, X. L. Li, X. N. Li, X. Q. Li, Z. B. Li, Z. Y. Li, H. Liang, H. Liang, Y. F. Liang, Y. T. Liang, Guangrui LiaoORCiD, L. Z. Liao, J. Libby, C. X. Lin, D. X. Lin, Y. J. Lin, B. Liu, B. J. Liu, C. X. Liu, D. Liu, D. Y. 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. Y. Liu, Ke LiuORCiD, Q. Liu, S. B. Liu, Tong Liu, X. Liu, X. Y. Liu, Y. B. Liu, Zhen-An LiuORCiDGND, Zhiqing LiuORCiD, Y. F. Long, Xinchou LouORCiD, H. J. Lu, J. D. Lu, Junguang LuORCiD, Y. Lu, Yunpeng LuORCiD, Chenglin LuoORCiD, M. X. Luo, P. W. Luo, Tao LuoORCiD, X. L. Luo, S. Lusso, Xiao-Rui LyuORCiD, Fengcai Ma, Hailong MaORCiD, Lianliang MaORCiD, M. M. Ma, Qiumei MaORCiD, X. N. Ma, X. X. Ma, Xiaoyan MaORCiD, Y. M. Ma, Frank E. MaasORCiDGND, Marco MaggioraORCiD, Stephan MaldanerGND, Sneha MaldeORCiD, Qadeer Afzal Malik, Alessio MangoniORCiD, 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, Simon NakhoulGND, Yury NefedovORCiD, Frank NerlingORCiD, Ivan Borisovich NikolaevORCiD, Z. Ning, Shabana Nisar, S. L. Niu, Stephen L. OlsenORCiD, Qun OuyangORCiD, Simone PacettiORCiD, Y. Pan, M. Papenbrock, P. Patteri, Marc PelizäusGND, H. P. Peng, Klaus PetersORCiDGND, J. Pettersson, J. L. Ping, R. G. Ping, A. Pitka, Ronald PolingORCiD, Vindhyawasini PrasadORCiD, Ming QiORCiD, Tianyu QiORCiD, S. Qian, Congfeng Qiao, N. Qin, Xiaoping QinORCiD, X. S. Qin, Zhonghua QinORCiD, Jinfa QiuORCiD, S. Q. Qu, K. H. Rashid, Christoph Florian RedmerORCiDGND, M. Richter, M. Ripka, Angelo RivettiORCiD, Viktor Rodin, Manuel Dionisio Da Rocha RoloORCiD, Gang RongORCiD, Christoph RosnerORCiDGND, Marcel Andre RumpGND, Andrei V. SarantsevGND, M. Savrié, Karin SchönningORCiD, Wei ShanORCiD, Xinyu ShanORCiD, M. Shao, Chengping ShenORCiD, P. X. Shen, X. Y. Shen, H. Y. Sheng, X. Shi, Xiaodong ShiORCiD, J. J. Song, Q. Q. Song, X. Y. Song, Stefano SosioORCiD, C. Sowa, Stefano SpataroORCiD, F. F. Sui, 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, Y. T. Tan, C. J. Tang, G. Y. Tang, X. Tang, Viktor ThorenORCiD, B. Tsednee, Ismail UmanORCiDGND, B. Wang, B. L. Wang, C. W. Wang, D. Y. Wang, H. H. Wang, K. Wang, Liangliang WangORCiD, L. S. Wang, M. Wang, M. Z. Wang, Meng WangORCiD, P. L. Wang, R. M. Wang, Weiping WangORCiD, X. Wang, Xiongfei WangORCiD, X. L. Wang, Y. Wang, Y. Wang, Y. F. Wang, Z. Wang, Z. G. Wang, Z. Y. Wang, Zongyuan WangORCiD, T. Weber, D. H. Wei, P. Weidenkaff, H. W. Wen, Shuopin WenORCiD, Ulrich WiednerORCiDGND, Guy WilkinsonORCiD, Magnus WolkeGND, Linghui WuORCiD, Lianjin WuORCiD, Z. Wu, L. Xia, Y. Xia, S. Y. Xiao, Y. J. Xiao, Zhenjun XiaoORCiD, Y. G. Xie, Y. H. Xie, T. Y. Xing, X. A. Xiong, Q. L. Xiu, Guofa XuORCiD, L. Xu, Q. J. Xu, W. Xu, Xinping XuORCiD, F. Yan, Liang YanORCiD, W. B. Yan, W. C. Yan, Y. H. Yan, H. J. Yang, Hongxun YangORCiD, L. Yang, R. X. Yang, S. L. Yang, Y. H. Yang, Yongxu Yang, Yifan YangORCiD, Z. Q. Yang, M. Ye, Minghan Ye, J. H. Yin, Z. Y. You, Boxiang YuORCiD, C. X. Yu, J. S. Yu, Chang-Zheng YuanORCiD, X. Q. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, Y. 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. F. Zhang, T. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Yateng ZhangORCiD, Yang Zhang, Yao Zhang, Yi 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. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, L. P. Zhou, Q. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, Xiaoyu Zhou, Xu Zhou, A. N. Zhu, J. Zhu, J. Zhu, K. Zhu, Kejun ZhuORCiD, S. H. Zhu, W. J. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Zian ZhuORCiD, J. Zhuang, B. S. Zou, Jiaheng ZouORCiD
URN:urn:nbn:de:hebis:30:3-848280
DOI:https://doi.org/10.1103/PhysRevD.100.072004
ISSN:2470-0029
ISSN:2470-0010
ArXiv Id:http://arxiv.org/abs/1905.04707
Parent Title (English):Physical review. D : covering particles, fields, gravitation, and cosmology
Publisher:American Physical Society
Place of publication:Ridge, NY
Document Type:Article
Language:English
Date of Publication (online):2019/10/14
Date of first Publication:2019/10/14
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Creating Corporation:BESIII Collaboration
Release Date:2024/07/02
Volume:100
Issue:7, 072004
Article Number:072004
Page Number:9
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