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Search for ¯Λ−Λ baryon-number-violating oscillations in the decay J/ψ → pK-¯Λ+c.c.

Medina Ablikim, Mikhail N. Achasov, Patrik Adlarson, Samer Ahmed, Malte Albrecht, Riccardo Aliberti, Antonio Amoroso, Q. An, Y. Bai, Olga Bakina, R. Baldini Ferroli, Ilaria Balossino, Yong Ban, Khurelbaatar Begzsuren, Niklaus Berger, Monica Bertani, Diego Bettoni, Fabrizio Bianchi, Johannes Bloms, Alberto Bortone, Igor R. Boyko, Roy A. Briere, H. Cai, X. Cai, Alessandro Calcaterra, G. F. Cao, N. Cao, Serkant Ali Çetin, Jinfan Chang, W. L. Chang, Gueorgui A. Chelkov, G. Chen, Hesheng Chen, M. L. Chen, S. J. Chen, X. R. Chen, Yuanbo Chen, Z. J. Chen, W. S. Cheng, Gianluigi Cibinetto, Fabio Cossio, Hongliang Dai, J. P. Dai, Xinchen Dai, Alaa Dbeyssi, Remco E. de Boer, Dmitri V. Dedovich, Ziyan Deng, Achim Denig, Igor Denysenko, Marco Giovanni Maria Destefanis, Francesca De Mori, Y. Ding, J. Dong, Liaoyuan Dong, Mingyi Dong, X. Dong, Shuxian Du, J. Fang, Shuangshi Fang, Y. Fang, Riccardo Farinelli, Luciano Fava, Florian Feldbauer, Giulietto Felici, C. Q. Feng, Miriam Fritsch, Chengdong Fu, Y. N. Gao, Ya Gao, Yang Gao, I. Garzia, Evelina Gersabeck, A. Gilman, Klaus Goetzen, L. Gong, Wenxuan Gong, Wolfgang Gradl, M. Greco, L. M. Gu, Minhao Gu, S. Gu, Y. T. Gu, C. Y. Guan, Aiqiang Guo, L. B. Guo, R. P. Guo, Yuping Guo, Alexey Guskov, T. T. Han, Xiqing Hao, F. A. Harris, K. L. He, F. H. H. Heinsius, C. H. Heinz, Yuekun Heng, Christoph Herold, Mathilde Himmelreich, Tobias Holtmann, Y. R. Hou, Zhilong Hou, Haiming Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, L. Q. Huang, X. T. Huang, Y. P. Huang, Tahir Hussain, William Imoehl, M. Irshad, S. Jaeger, S. Janchiv, Quan Ji, Qingping Ji, X. B. Ji, X. L. Ji, Xiaoshan Jiang, J. B. Jiao, Z. Jiao, Shan Jin, Y. Jin, Tord Johansson, Nasser Kalantar-Nayestanaki, X. S. Kang, Rosa Kappert, Myroslav O. Kavatsyuk, B. C. Ke, I. K. Keshk, Alfons Khoukaz, P. Kiese, R. Kiuchi, Ralf Kliemt, Onur Bugra Kolcu, Bertram Kopf, M. Kuemmel, M. K. Kuessner, Andrzej Kupsc, M. G. Kurth, Wolfgang Kühn, John Jake Lane, Paul Larin, Anita Lavania, Lia Lavezzi, Z. H. Lei, H. Leithoff, Max Lellmann, Thomas Lenz, C. Li, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. Li, Haibo Li, H. J. Li, J. Q. Li, J. W. Li, Ke Li, L. K. Li, Lei Li, P. L. Li, P. R. Li, S. Y. Li, Weidong Li, Weiguo Li, X. H. Li, X. L. 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, 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, L. Liu, M. H. Liu, Q. Liu, S. B. Liu, Shuai Liu, T. Liu, W. M. Liu, X. Liu, Y. B. Liu, Zhen-An Liu, Z. Q. Liu, Xinchou Lou, F. X. Lu, H. J. Lu, J. D. Lu, Junguang Lu, X. L. Lu, Y. Lu, Yunpeng Lu, Chenglin Luo, M. X. Luo, T. Luo, X. L. Luo, S. Lusso, Xiao-Rui Lyu, Fengcai Ma, H. L. Ma, Lianliang Ma, M. M. Ma, Qiumei Ma, R. Q. Ma, R. T. Ma, X. X. Ma, Xiaoyan 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, T. J. Min, Ryan Edward Mitchell, Xiaohu Mo, Nikolai Yu. Muchnoi, H. Muramatsu, Simon Nakhoul, Yury Nefedov, Frank Nerling, Ivan Borisovich Nikolaev, Z. Ning, Shabana Nisar, Stephen L. Olsen, Qun Ouyang, Simone Pacetti, X. Pan, Y. Pan, A. Pathak, P. Patteri, Marc Pelizäus, H. P. Peng, Klaus Peters, J. L. Ping, R. G. Ping, A. Pitka, Ronald Poling, Vindhyawasini Prasad, H. Qi, H. R. Qi, Ming Qi, T. Y. Qi, S. Qian, W. B. Qian, Congfeng Qiao, L. Q. Qin, X. P. Qin, X. S. Qin, Zhonghua Qin, Jinfa Qiu, S. Q. Qu, S. Q. Qu, Krishnakumar Ravindran, Christoph Florian Redmer, Angelo Rivetti, Viktor Rodin, Manuel Dionisio Da Rocha Rolo, Gang Rong, Christoph Rosner, Andrei V. Sarantsev, Yasemin Schelhaas, Claudius Schnier, Karin Schönning, Marco Scodeggio, D. C. Shan, Wei Shan, Xinyu Shan, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. C. Shi, R. S. Shi, X. Shi, X. D. Shi, W. M. Song, Y. X. Song, Stefano Sosio, Stefano Spataro, K. X. Su, Gongxing Sun, J. F. Sun, L. Sun, S. S. Sun, T. Sun, W. Y. Sun, Y. J. Sun, Y. K. Sun, Y. Z. Sun, Z. T. Sun, Y. H. Tan, Y. X. Tan, C. J. Tang, G. Y. Tang, J. Tang, J. X. Teng, Viktor Thoren, Ismail Uman, B. Wang, B. L. Wang, C. W. Wang, D. Y. Wang, H. P. Wang, K. Wang, L. L. Wang, M. Wang, Meng Wang, W. H. Wang, W. P. Wang, X. Wang, X. F. Wang, X. L. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. Y. Wang, Ziyi Wang, Zongyuan Wang, D. H. Wei, P. Weidenkaff, Frederik Weidner, Shuopin Wen, D. J. White, U. W. Wiedner, G. Wilkinson, Magnus Wolke, Leonard Wollenberg, J. F. Wu, L. H. Wu, L. J. Wu, X. Wu, Z. Wu, L. Xia, H. Xiao, S. Y. Xiao, Zhenjun Xiao, X. H. Xie, Y. G. Xie, Y. H. Xie, T. Y. Xing, Guofa Xu, J. J. Xu, Q. J. Xu, W. Xu, Xinping Xu, Y. C. Xu, F. Yan, L. Yan, W. B. Yan, W. C. Yan, Xu Yan, H. J. Yang, Hongxun Yang, L. Yang, S. L. Yang, Y. H. Yang, Yifan Yang, M. Ye, Minghan Ye, J. H. Yin, Z. Y. You, Boxiang Yu, C. X. Yu, G. Yu, J. S. Yu, T. Yu, Chang-Zheng Yuan, L. Yuan, W. Yuan, Y. Yuan, Z. Y. Yuan, C. X. Yue, A. A. Zafar, Y. Zeng, B. X. Zhang, G. Y. Zhang, H. Zhang, H. H. Zhang, H. H. Zhang, Hongyu Zhang, J. J. Zhang, J. Q. Zhang, J. W. Zhang, Jianyong Zhang, J. Z. Zhang, Jianyu Zhang, Jiawei Zhang, Lei Zhang, S. F. 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, Ming-Gang Zhao, Q. Zhao, Shujun Zhao, Yubin Zhao, Y. X. Zhao, Zhengguo Zhao, Alexey Zhemchugov, B. Zheng, Jianping Zheng, Y. H. Zheng, B. Zhong, C. Zhong, L. P. Zhou, Q. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, A. N. Zhu, J. Zhu, K. Zhu, Kejun Zhu, S. H. Zhu, W. J. Zhu, W. J. Zhu, Y. C. Zhu, Zian Zhu, B. S. Zou, Jiaheng Zou

  • We report on the first search for ¯Λ−Λ oscillations in the decay 𝐽/𝜓→𝑝⁢𝐾−⁢¯Λ+c.c. by analyzing 1.31×109  𝐽/𝜓 events accumulated with the BESIII detector at the BEPCII collider. The 𝐽/𝜓 events are produced using 𝑒+⁢𝑒− collisions at a center of mass energy √𝑠=3.097  GeV. No evidence for hyperon oscillations is observed. The upper limit for the oscillation rate of ¯Λ to Λ hyperons is determined to be 𝒫⁡(Λ)=[ℬ⁡(𝐽/𝜓→𝑝⁢𝐾−⁢Λ+c.c.)/ℬ⁡(𝐽/𝜓→𝑝⁢𝐾−⁢¯Λ+c.c.)]<4.4×10−6 corresponding to an oscillation parameter 𝛿⁢𝑚Λ⁢¯Λ of less than 3.8×10−18  GeV at the 90% confidence level.

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Author:Medina AblikimORCiD, Mikhail N. AchasovORCiD, Patrik AdlarsonORCiD, Samer AhmedGND, Malte AlbrechtORCiDGND, Riccardo AlibertiORCiDGND, Antonio AmorosoORCiD, Q. An, Y. Bai, Olga Bakina, R. Baldini Ferroli, Ilaria BalossinoORCiD, Yong BanORCiD, Khurelbaatar Begzsuren, Niklaus BergerORCiDGND, Monica BertaniORCiD, Diego BettoniORCiD, Fabrizio BianchiORCiD, Johannes BlomsGND, Alberto BortoneORCiD, Igor R. BoykoORCiD, Roy A. BriereORCiD, H. Cai, X. Cai, Alessandro CalcaterraORCiD, G. F. Cao, N. Cao, Serkant Ali ÇetinORCiD, Jinfan ChangORCiD, W. L. Chang, Gueorgui A. ChelkovORCiD, G. Chen, Hesheng ChenORCiD, M. L. Chen, S. J. Chen, X. R. Chen, Yuanbo ChenORCiD, Z. J. Chen, W. S. Cheng, Gianluigi CibinettoORCiD, Fabio CossioORCiD, Hongliang DaiORCiD, J. P. Dai, Xinchen DaiORCiD, Alaa DbeyssiORCiD, Remco E. de BoerORCiD, Dmitri V. Dedovich, Ziyan DengORCiD, Achim DenigORCiD, Igor Denysenko, Marco Giovanni Maria DestefanisORCiDGND, Francesca De MoriORCiD, Y. Ding, J. Dong, Liaoyuan DongORCiD, Mingyi DongORCiD, X. Dong, Shuxian Du, J. Fang, Shuangshi FangORCiD, Y. Fang, Riccardo FarinelliORCiD, Luciano FavaORCiD, Florian FeldbauerGND, Giulietto FeliciORCiD, C. Q. Feng, Miriam FritschORCiDGND, Chengdong FuORCiD, Y. N. Gao, Ya Gao, Yang Gao, I. Garzia, Evelina GersabeckORCiDGND, A. Gilman, Klaus GoetzenORCiDGND, L. Gong, Wenxuan GongORCiD, Wolfgang GradlORCiDGND, M. Greco, L. M. Gu, Minhao GuORCiD, S. Gu, Y. T. Gu, C. Y. Guan, Aiqiang GuoORCiD, L. B. Guo, R. P. Guo, Yuping GuoORCiD, Alexey GuskovORCiD, T. T. Han, Xiqing Hao, F. A. Harris, K. L. He, F. H. H. Heinsius, C. H. Heinz, Yuekun HengORCiD, Christoph HeroldORCiDGND, Mathilde HimmelreichGND, Tobias HoltmannGND, Y. R. Hou, Zhilong HouORCiD, Haiming HuORCiD, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, L. Q. Huang, X. T. Huang, Y. P. Huang, Tahir HussainORCiD, William ImoehlORCiD, M. Irshad, S. Jaeger, S. Janchiv, Quan JiORCiD, Qingping JiORCiD, X. B. Ji, X. L. Ji, Xiaoshan JiangORCiD, J. B. Jiao, Z. Jiao, Shan JinORCiD, Y. Jin, Tord JohanssonORCiD, Nasser Kalantar-NayestanakiORCiD, X. S. Kang, Rosa KappertORCiD, Myroslav O. Kavatsyuk, B. C. Ke, I. K. Keshk, Alfons KhoukazORCiDGND, P. Kiese, R. Kiuchi, Ralf KliemtORCiD, Onur Bugra KolcuORCiD, Bertram KopfGND, M. Kuemmel, M. K. Kuessner, Andrzej KupscORCiD, M. G. Kurth, Wolfgang KühnORCiD, John Jake LaneORCiD, Paul LarinGND, Anita Lavania, Lia LavezziORCiD, Z. H. Lei, H. Leithoff, Max LellmannORCiD, Thomas LenzORCiDGND, C. Li, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. Li, Haibo LiORCiD, H. J. Li, J. Q. Li, J. W. Li, Ke Li, L. K. Li, Lei Li, P. L. Li, P. R. Li, S. Y. Li, Weidong LiORCiD, Weiguo LiORCiD, X. H. Li, X. L. 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, 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, L. Liu, M. H. Liu, Q. Liu, S. B. Liu, Shuai Liu, T. Liu, W. M. Liu, X. Liu, Y. B. Liu, Zhen-An LiuORCiDGND, Z. Q. Liu, Xinchou LouORCiD, F. X. Lu, H. J. Lu, J. D. Lu, Junguang LuORCiD, X. L. Lu, Y. Lu, Yunpeng LuORCiD, Chenglin LuoORCiD, M. X. Luo, T. Luo, X. L. Luo, S. Lusso, Xiao-Rui LyuORCiD, Fengcai Ma, H. L. Ma, Lianliang MaORCiD, M. M. Ma, Qiumei MaORCiD, R. Q. Ma, R. T. Ma, X. X. Ma, Xiaoyan MaORCiD, 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, T. J. Min, Ryan Edward Mitchell, Xiaohu MoORCiD, Nikolai Yu. MuchnoiORCiDGND, H. Muramatsu, Simon NakhoulGND, Yury NefedovORCiD, Frank NerlingORCiD, Ivan Borisovich NikolaevORCiD, Z. Ning, Shabana Nisar, Stephen L. OlsenORCiD, Qun OuyangORCiD, Simone PacettiORCiD, X. Pan, Y. Pan, A. Pathak, P. Patteri, Marc PelizäusGND, H. P. Peng, Klaus PetersORCiDGND, J. L. Ping, R. G. Ping, A. Pitka, Ronald PolingORCiD, Vindhyawasini PrasadORCiD, H. Qi, H. R. Qi, Ming QiORCiD, T. Y. Qi, S. Qian, W. B. Qian, Congfeng Qiao, L. Q. Qin, X. P. Qin, X. S. Qin, Zhonghua QinORCiD, Jinfa QiuORCiD, S. Q. Qu, S. Q. Qu, Krishnakumar RavindranORCiD, Christoph Florian RedmerORCiDGND, Angelo RivettiORCiD, Viktor Rodin, Manuel Dionisio Da Rocha RoloORCiD, Gang RongORCiD, Christoph RosnerORCiDGND, Andrei V. SarantsevGND, Yasemin Schelhaas, Claudius SchnierGND, Karin SchönningORCiD, Marco ScodeggioORCiD, D. C. Shan, Wei ShanORCiD, Xinyu ShanORCiD, M. Shao, C. P. Shen, P. X. Shen, X. Y. Shen, H. C. Shi, R. S. Shi, X. Shi, X. D. Shi, W. M. Song, Y. X. Song, Stefano SosioORCiD, Stefano SpataroORCiD, K. X. Su, Gongxing SunORCiD, J. F. Sun, L. Sun, S. S. Sun, T. Sun, W. Y. Sun, Y. J. Sun, Y. K. Sun, Y. Z. Sun, Z. T. Sun, Y. H. Tan, Y. X. Tan, C. J. Tang, G. Y. Tang, J. Tang, J. X. Teng, Viktor ThorenORCiD, Ismail UmanORCiDGND, B. Wang, B. L. Wang, C. W. Wang, D. Y. Wang, H. P. Wang, K. Wang, L. L. Wang, M. Wang, Meng WangORCiD, W. H. Wang, W. P. Wang, X. Wang, X. F. Wang, X. L. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. Y. Wang, Ziyi WangORCiD, Zongyuan WangORCiD, D. H. Wei, P. Weidenkaff, Frederik Weidner, Shuopin WenORCiD, D. J. White, U. W. Wiedner, G. Wilkinson, Magnus WolkeGND, Leonard Wollenberg, J. F. Wu, L. H. Wu, L. J. Wu, X. Wu, Z. Wu, L. Xia, H. Xiao, S. Y. Xiao, Zhenjun XiaoORCiD, X. H. Xie, Y. G. Xie, Y. H. Xie, T. Y. Xing, Guofa XuORCiD, J. J. Xu, Q. J. Xu, W. Xu, Xinping XuORCiD, Y. C. Xu, F. Yan, L. Yan, W. B. Yan, W. C. Yan, Xu Yan, H. J. Yang, Hongxun YangORCiD, L. Yang, S. L. Yang, Y. H. Yang, Yifan YangORCiD, M. Ye, Minghan Ye, J. H. Yin, Z. Y. You, Boxiang YuORCiD, C. X. Yu, G. Yu, J. S. Yu, T. Yu, Chang-Zheng YuanORCiD, L. Yuan, W. Yuan, Y. Yuan, Z. Y. Yuan, C. X. Yue, A. A. Zafar, Y. Zeng, B. X. Zhang, G. Y. Zhang, H. Zhang, H. H. Zhang, H. H. Zhang, Hongyu ZhangORCiD, J. J. Zhang, J. Q. Zhang, J. W. Zhang, Jianyong ZhangORCiD, J. Z. Zhang, Jianyu Zhang, Jiawei Zhang, Lei Zhang, S. F. Zhang, X. D. Zhang, X. Y. Zhang, Y. Zhang, Y. T. Zhang, Y. H. Zhang, Yan ZhangORCiD, Yao Zhang, Z. Y. Zhang, G. Zhao, J. Zhao, J. Y. Zhao, J. Z. Zhao, Lei ZhaoORCiD, Ling Zhao, Ming-Gang ZhaoORCiD, Q. Zhao, Shujun Zhao, Yubin ZhaoORCiD, Y. X. Zhao, Zhengguo ZhaoORCiD, Alexey ZhemchugovORCiD, B. Zheng, Jianping ZhengORCiD, Y. H. Zheng, B. Zhong, C. Zhong, L. P. Zhou, Q. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, A. N. Zhu, J. Zhu, K. Zhu, Kejun ZhuORCiD, S. H. Zhu, W. J. Zhu, W. J. Zhu, Y. C. Zhu, Zian ZhuORCiD, B. S. Zou, Jiaheng ZouORCiD
URN:urn:nbn:de:hebis:30:3-858951
URL:http://1079-7114
DOI:https://doi.org/10.1103/PhysRevLett.131.121801
ArXiv Id:http://arxiv.org/abs/2305.04568
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):2023/09/19
Date of first Publication:2023/09/19
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Creating Corporation:BESIII Collaboration
Release Date:2024/06/20
Volume:131
Issue:12, 121801
Article Number:121801
Page Number:7
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