Measurement of the absolute branching fraction of Λc+→pKS0η decays

M. Ablikim, M.N. Achasov,P. Adlarson,S. Ahmed,M. Albrecht,R. Aliberti, A. Amoroso, Q. An,Anita,X.H. Bai, Y. Bai, O. Bakina,R. Baldini Ferroli, I. Balossino, Y. Ban, K. Begzsuren,J.V. Bennett,N. Berger, M. Bertani, D. Bettoni,F. Bianchi, J. Biernat, 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.B. 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, S.X. Du, J. Fang,S.S. Fang,Y. Fang,R. Farinelli, L. Fava, F. Feldbauer,G. Felici, C.Q. Feng,M. Fritsch, C.D. Fu,Y. Fu,X.L. Gao, Y. Gao, Y.G. Gao, I. Garzia, E.M. Gersabeck, A. Gilman, K. Goetzen,L. Gong, W.X. Gong, W. Gradl, M. Greco,L.M. Gu, M.H. Gu,S. Gu, Y.T. Gu, C.Y. Guan,A.Q. Guo,L.B. Guo,R.P. Guo,Y.P. Guo, A. Guskov,S. Han,T.T. Han,T.Z. Han, X.Q. Hao, F.A. Harris,K.L. He, F.H. Heinsius,C.H. Heinz,T. Held,Y.K. Heng,M. Himmelreich,T. Holtmann,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,N. Huesken,T. Hussain,W. Ikegami Andersson,W. Imoehl,M. Irshad,S. Jaeger,S. Janchiv,Q. Ji,Q.P. Ji,X.B. Ji,X.L. Ji,H.B. Jiang, X.S. Jiang, X.Y. Jiang, J.B. Jiao,Z. Jiao,S. Jin,Y. Jin,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. Kühn, J.J. Lane, J.S. Lange, P. Larin, L. Lavezzi, H. Leithoff,M. Lellmann,T. Lenz, C. Li, C.H. Li, Cheng Li,D.M. Li,F. Li,G. Li,H. Li,H.B. Li,H.J. Li, J.L. Li,J.Q. Li, Ke Li, L.K. Li, Lei Li, P.L. Li,P.R. Li,S.Y. Li,W.D. Li,W.G. Li,X.H. Li, X.L. Li,Z.B. Li,Z.Y. Li,H. Liang,Y.F. Liang,Y.T. Liang, L.Z. Liao, J. Libby, C.X. Lin, B. Liu,B.J. Liu,C.X. Liu,D. Liu,D.Y. Liu, F.H. 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. Liu, Q. Liu, S.B. Liu, Shuai Liu,T. Liu,X. Liu,Y.B. Liu,Z.A. Liu, Z.Q. Liu, Y.F. Long, 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, S. Lusso, 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.N. Ma,X.X. Ma,X.Y. Ma,Y.M. 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,Y.J. 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, P. Patteri, M. Pelizaeus, H.P. Peng,K. Peters,J. Pettersson, J.L. Ping, R.G. Ping, A. Pitka,R. Poling,V. Prasad,H. Qi,H.R. Qi, M. Qi,T.Y. Qi,S. Qian,W.-B. Qian,Z. Qian, C.F. Qiao, L.Q. 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, A. Sarantsev,Y. Schelhaas, C. Schnier,K. Schoenning,M. Scodeggio,D.C. Shan, W. Shan,X.Y. Shan,M. Shao, C.P. Shen, P.X. Shen, X.Y. Shen,H.C. Shi,R.S. Shi,X. Shi,X.D. Shi, J.J. Song, Q.Q. Song, W.M. Song,Y.X. Song, S. Sosio, S. Spataro, F.F. Sui,G.X. Sun,J.F. Sun,L. Sun,S.S. Sun,T. Sun,W.Y. Sun,X. 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,V. Thoren, I. Uman,B. Wang,B.L. Wang,C.W. Wang, D.Y. Wang,H.P. Wang,K. Wang,L.L. Wang,M. Wang,M.Z. 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,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,Y.J. Xiao,Z.J. Xiao,X.H. Xie,Y.G. Xie,Y.H. Xie,T.Y. Xing, X.A. Xiong, G.F. Xu,J.J. Xu,Q.J. Xu, W. Xu, X.P. Xu, F. Yan,L. Yan,W.B. Yan,W.C. Yan,Xu Yan, H.J. Yang,H.X. Yang,L. Yang,R.X. Yang,S.L. Yang,Y.H. 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, W. Yuan,X.Q. Yuan,Y. Yuan,Z.Y. Yuan, C.X. Yue, A. Yuncu,A.A. Zafar, Y. Zeng, B.X. Zhang,Guangyi 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. Zhang,Lei Zhang,S. Zhang,S.F. Zhang, T.J. Zhang, X.Y. Zhang,Y. Zhang, Y.H. Zhang, Y.T. Zhang,Yan Zhang, Yao Zhang,Yi Zhang, Z.H. 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. 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,K.J. Zhu,S.H. Zhu,W.J. Zhu, X.L. Zhu, Y.C. Zhu,Z.A. Zhu,B.S. Zou, J.H. Zou

Physics Letters B（2021）

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摘要

Abstract Based on 586 p b − 1 of e + e − annihilation data collected at a center-of-mass energy of s = 4.6 GeV with the BESIII detector at the BEPCII collider, the absolute branching fraction of Λ c + → p K S 0 η decays is measured for the first time to be B ( Λ c + → p K S 0 η ) = ( 0.414 ± 0.084 ± 0.028 ) % , where the first uncertainty is statistical and the second is systematic. The result is compatible with a previous CLEO result on the relative branching fraction B ( Λ c + → p K S 0 η ) B ( Λ c + → p K − π + ) , and consistent with theoretical predictions of SU(3) flavor symmetry.

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Charmed baryon,Λc+ decays,Absolute branching fraction,BESIII

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