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Search for ηc(2S)→π+π−ηc and ηc(2S)→π+π−KS0K±π∓ decays

  • Published:2024-04-29 Issue:7 Volume:109 Page:
  • ISSN:2470-0010
  • Container-title:Physical Review D
  • language:en
  • Short-container-title:Phys. Rev. D

Author:

Ablikim M.1,Achasov M. N.2,Adlarson P.3,Afedulidis O.4,Ai X. C.5,Aliberti R.6,Amoroso A.78,An Q.910,Bai Y.11,Bakina O.12,Balossino I.13,Ban Y.14,Bao H.-R.15,Batozskaya V.116,Begzsuren K.17,Berger N.6,Berlowski M.16,Bertani M.18,Bettoni D.13,Bianchi F.78,Bianco E.78,Bortone A.78,Boyko I.12,Briere R. A.19,Brueggemann A.20,Cai H.21,Cai X.110,Calcaterra A.18,Cao G. F.115,Cao N.115,Cetin S. A.22,Chang J. F.110,Che G. R.23,Chelkov G.12,Chen C.23,Chen C. H.24,Chen Chao25,Chen G.1,Chen H. S.115,Chen H. Y.26,Chen M. L.11015,Chen S. J.27,Chen S. L.28,Chen S. M.29,Chen T.115,Chen X. R.3015,Chen X. T.115,Chen Y. B.110,Chen Y. Q.31,Chen Z. J.32,Chen Z. Y.115,Choi S. K.33,Cibinetto G.13,Cossio F.8,Cui J. J.34,Dai H. L.110,Dai J. P.35,Dbeyssi A.36,de Boer R. E.4,Dedovich D.12,Deng C. Q.37,Deng Z. Y.1,Denig A.6,Denysenko I.12,Destefanis M.78,De Mori F.78,Ding B.381,Ding X. X.14,Ding Y.31,Ding Y.39,Dong J.110,Dong L. Y.115,Dong M. Y.11015,Dong X.21,Du M. C.1,Du S. X.5,Duan Y. Y.25,Duan Z. H.27,Egorov P.12,Fan Y. H.28,Fang J.40,Fang J.110,Fang S. S.115,Fang W. X.1,Fang Y.1,Fang Y. Q.110,Farinelli R.13,Fava L.418,Feldbauer F.4,Felici G.18,Feng C. Q.910,Feng J. H.40,Feng Y. T.910,Fritsch M.4,Fu C. D.1,Fu J. L.15,Fu Y. W.115,Gao H.15,Gao X. B.42,Gao Y. N.14,Gao Yang910,Garbolino S.8,Garzia I.1343,Ge L.5,Ge P. T.21,Ge Z. W.27,Geng C.40,Gersabeck E. M.44,Gilman A.45,Goetzen K.46,Gong L.39,Gong W. X.110,Gradl W.6,Gramigna S.1343,Greco M.78,Gu M. H.110,Gu Y. T.47,Guan C. Y.115,Guan Z. L.48,Guo A. Q.3015,Guo L. B.42,Guo M. J.34,Guo R. P.49,Guo Y. P.50,Guskov A.12,Gutierrez J.51,Han K. L.15,Han T. T.1,Hanisch F.4,Hao X. Q.52,Harris F. A.53,He K. K.25,He K. L.115,Heinsius F. H.4,Heinz C. H.6,Heng Y. K.11015,Herold C.54,Holtmann T.4,Hong P. C.31,Hou G. Y.115,Hou X. T.115,Hou Y. R.15,Hou Z. L.1,Hu B. Y.40,Hu H. M.115,Hu J. F.55,Hu S. L.50,Hu T.11015,Hu Y.1,Huang G. S.910,Huang K. X.40,Huang L. Q.3015,Huang X. T.34,Huang Y. P.1,Hussain T.56,Hölzken F.4,Hüsken N.516,Hüsken N.6,in der Wiesche N.20,Jackson J.51,Janchiv S.17,Jeong J. H.33,Ji Q.1,Ji Q. P.52,Ji W.115,Ji X. B.115,Ji X. L.110,Ji Y. Y.34,Jia X. Q.34,Jia Z. K.910,Jiang D.115,Jiang H. B.21,Jiang P. C.14,Jiang S. S.57,Jiang T. J.58,Jiang X. S.11015,Jiang Y.15,Jiao J. B.34,Jiao J. K.31,Jiao Z.59,Jin S.27,Jin Y.38,Jing M. Q.115,Jing X. M.15,Johansson T.3,Kabana S.60,Kalantar-Nayestanaki N.61,Kang X. L.24,Kang X. S.39,Kavatsyuk M.61,Ke B. C.5,Khachatryan V.51,Khoukaz A.20,Kiuchi R.1,Kolcu O. B.22,Kopf B.4,Kuessner M.4,Kui X.115,Kumar N.62,Kupsc A.163,Kühn W.63,Lane J. J.44,Larin P.36,Lavezzi L.78,Lei T. T.910,Lei Z. H.910,Lellmann M.6,Lenz T.6,Li C.64,Li C.23,Li C. H.57,Li Cheng910,Li D. M.5,Li F.110,Li G.1,Li H. B.115,Li H. J.52,Li H. N.55,Li Hui23,Li J. R.29,Li J. S.40,Li Ke1,Li L. J.115,Li L. K.1,Li Lei65,Li M. H.23,Li P. R.66,Li Q. M.115,Li Q. X.34,Li R.6730,Li S. X.50,Li T.34,Li W. D.115,Li W. G.1,Li X.115,Li X. H.910,Li X. L.34,Li X. Z.40,Li Xiaoyu115,Li Y. G.14,Li Z. J.40,Li Z. X.47,Li Z. Y.35,Liang C.27,Liang H.910,Liang H.115,Liang Y. F.68,Liang Y. T.3015,Liao G. R.69,Liao L. Z.34,Libby J.62,Limphirat A.54,Lin C. C.25,Lin D. X.3015,Lin T.1,Liu B. J.1,Liu B. X.21,Liu C.31,Liu C. X.1,Liu F. H.70,Liu Fang1,Liu Feng71,Liu G. M.55,Liu H.66,Liu H. B.47,Liu H. M.115,Liu Huanhuan1,Liu Huihui72,Liu J. B.910,Liu J. Y.115,Liu K.66,Liu K. Y.39,Liu Ke48,Liu L.910,Liu L. C.23,Liu Lu23,Liu M. H.50,Liu P. L.1,Liu Q.15,Liu S. B.910,Liu T.50,Liu W. K.23,Liu W. M.910,Liu X.57,Liu X.66,Liu Y.66,Liu Y.5,Liu Y. B.23,Liu Z. A.11015,Liu Z. D.24,Liu Z. Q.34,Lou X. C.11015,Lu F. X.40,Lu H. J.59,Lu J. G.110,Lu X. L.1,Lu Y.73,Lu Y. P.110,Lu Z. H.115,Luo C. L.42,Luo M. X.74,Luo T.50,Luo X. L.110,Lyu X. R.15,Lyu Y. F.23,Ma F. C.39,Ma H.35,Ma H. L.1,Ma J. L.115,Ma L. L.34,Ma M. M.115,Ma Q. M.1,Ma R. Q.115,Ma T.910,Ma X. T.115,Ma X. Y.110,Ma Y.14,Ma Y. M.30,Maas F. E.36,Maggiora M.78,Malde S.45,Mao Y. J.14,Mao Z. P.1,Marcello S.78,Meng Z. X.38,Messchendorp J. G.4661,Mezzadri G.13,Miao H.115,Min T. J.27,Mitchell R. E.51,Mo X. H.11015,Moses B.51,Muchnoi N. Yu.2,Muskalla J.6,Nefedov Y.12,Nerling F.36,Nie L. S.26,Nikolaev I. B.2,Ning Z.110,Nisar S.75,Niu Q. L.66,Niu W. D.25,Niu Y.34,Olsen S. L.15,Ouyang Q.11015,Pacetti S.7677,Pan X.25,Pan Y.11,Pathak A.31,Patteri P.18,Pei Y. P.910,Pelizaeus M.4,Peng H. P.910,Peng Y. Y.66,Peters K.46,Ping J. L.42,Ping R. G.115,Plura S.6,Prasad V.60,Qi F. Z.1,Qi H.910,Qi H. R.29,Qi M.27,Qi T. Y.50,Qian S.110,Qian W. B.15,Qiao C. F.15,Qiao X. K.5,Qin J. J.37,Qin L. Q.69,Qin L. Y.910,Qin X. S.34,Qin Z. H.110,Qiu J. F.1,Qu Z. H.37,Redmer C. F.6,Ren K. J.57,Rivetti A.8,Rolo M.8,Rong G.115,Rosner Ch.36,Ruan S. N.23,Salone N.16,Sarantsev A.12,Schelhaas Y.6,Schoenning K.3,Scodeggio M.13,Shan K. Y.50,Shan W.78,Shan X. Y.910,Shang Z. J.66,Shangguan J. F.25,Shao L. G.115,Shao M.910,Shen C. P.50,Shen H. F.179,Shen W. H.15,Shen X. Y.115,Shi B. A.15,Shi H.910,Shi H. C.910,Shi J. L.50,Shi J. Y.1,Shi Q. Q.25,Shi S. Y.37,Shi X.110,Song J. J.52,Song T. Z.40,Song W. M.311,Song Y. J.50,Song Y. X.14,Sosio S.78,Spataro S.78,Stieler F.6,Su Y. J.15,Sun G. B.21,Sun G. X.1,Sun H.15,Sun H. K.1,Sun J. F.52,Sun K.29,Sun L.21,Sun S. S.115,Sun T.80,Sun W. Y.31,Sun Y.24,Sun Y. J.910,Sun Y. Z.1,Sun Z. Q.115,Sun Z. T.34,Tang C. J.68,Tang G. Y.1,Tang J.40,Tang M.910,Tang Y. A.21,Tao L. Y.37,Tao Q. T.32,Tat M.45,Teng J. X.910,Thoren V.3,Tian W. H.40,Tian Y.3015,Tian Z. F.21,Uman I.81,Wan Y.25,Wang S. J.34,Wang B.1,Wang B. L.15,Wang Bo910,Wang D. Y.14,Wang F.37,Wang H. J.66,Wang J. J.21,Wang J. P.34,Wang K.110,Wang L. L.1,Wang M.34,Wang Meng115,Wang N. Y.15,Wang S.66,Wang S.50,Wang T.50,Wang T. J.23,Wang W.37,Wang W.40,Wang W. P.69,Wang X.14,Wang X. F.66,Wang X. J.57,Wang X. L.50,Wang X. N.1,Wang Y.29,Wang Y. D.28,Wang Y. F.11015,Wang Y. L.52,Wang Y. N.28,Wang Y. Q.1,Wang Yaqian67,Wang Yi29,Wang Z.110,Wang Z. L.37,Wang Z. Y.115,Wang Ziyi15,Wei D. H.69,Weidner F.20,Wen S. P.1,Wen Y. R.57,Wiedner U.4,Wilkinson G.45,Wolke M.3,Wollenberg L.4,Wu C.57,Wu J. F.179,Wu L. H.1,Wu L. J.115,Wu X.50,Wu X. H.31,Wu Y.910,Wu Y. H.25,Wu Y. J.30,Wu Z.110,Xia L.910,Xian X. M.57,Xiang B. H.115,Xiang T.14,Xiao D.66,Xiao G. Y.27,Xiao S. Y.1,Xiao Y. L.50,Xiao Z. J.42,Xie C.27,Xie X. H.14,Xie Y.34,Xie Y. G.110,Xie Y. H.71,Xie Z. P.910,Xing T. Y.115,Xu C. F.115,Xu C. J.40,Xu G. F.1,Xu H. Y.38,Xu M.910,Xu Q. J.58,Xu Q. N.82,Xu W.1,Xu W. L.38,Xu X. P.25,Xu Y. C.83,Xu Z. P.27,Xu Z. S.15,Yan F.50,Yan L.50,Yan W. B.910,Yan W. C.5,Yan X. Q.1,Yang H. J.80,Yang H. L.31,Yang H. X.1,Yang Tao1,Yang Y.50,Yang Y. F.23,Yang Y. X.115,Yang Yifan115,Yang Z. W.66,Yao Z. P.34,Ye M.110,Ye M. H.79,Yin J. H.1,You Z. Y.40,Yu B. X.11015,Yu C. X.23,Yu G.115,Yu J. S.32,Yu T.37,Yu X. D.14,Yu Y. C.5,Yuan C. Z.115,Yuan J.31,Yuan L.84,Yuan S. C.1,Yuan Y.115,Yuan Y. J.28,Yuan Z. Y.40,Yue C. X.57,Zafar A. A.56,Zeng F. R.34,Zeng S. H.37,Zeng X.50,Zeng Y.32,Zeng Y. J.40,Zhai X. Y.31,Zhai Y. C.34,Zhan Y. H.40,Zhang A. Q.115,Zhang B. L.115,Zhang B. X.1,Zhang D. H.23,Zhang G. Y.52,Zhang H.5,Zhang H.910,Zhang H. C.11015,Zhang H. H.40,Zhang H. H.31,Zhang H. Q.11015,Zhang H. R.910,Zhang H. Y.110,Zhang J.5,Zhang J.40,Zhang J. J.85,Zhang J. L.26,Zhang J. Q.42,Zhang J. S.50,Zhang J. W.11015,Zhang J. X.66,Zhang J. Y.1,Zhang J. Z.115,Zhang Jianyu15,Zhang L. M.29,Zhang Lei27,Zhang P.115,Zhang Q. Y.31,Zhang R. Y.66,Zhang Shuihan115,Zhang Shulei32,Zhang X. D.28,Zhang X. M.1,Zhang X. Y.34,Zhang Y.37,Zhang Y. T.5,Zhang Y. H.110,Zhang Y. M.57,Zhang Yan910,Zhang Yao1,Zhang Z. D.1,Zhang Z. H.1,Zhang Z. L.31,Zhang Z. Y.21,Zhang Z. Y.23,Zhang Z. Z.28,Zhao G.1,Zhao J. Y.115,Zhao J. Z.110,Zhao Lei910,Zhao Ling1,Zhao M. G.23,Zhao N.35,Zhao R. P.15,Zhao S. J.5,Zhao Y. B.110,Zhao Y. X.3015,Zhao Z. G.910,Zhemchugov A.12,Zheng B.37,Zheng B. M.31,Zheng J. P.110,Zheng W. J.115,Zheng Y. H.15,Zhong B.42,Zhong X.40,Zhou H.34,Zhou J. Y.31,Zhou L. P.115,Zhou S.71,Zhou X.21,Zhou X. K.71,Zhou X. R.910,Zhou X. Y.57,Zhou Y. Z.50,Zhu J.23,Zhu K.1,Zhu K. J.11015,Zhu K. S.50,Zhu L.31,Zhu L. X.15,Zhu S. H.86,Zhu S. Q.27,Zhu T. J.50,Zhu W. D.42,Zhu Y. C.910,Zhu Z. A.115,Zou J. H.1,Zu J.910,

Affiliation:

1. Institute of High Energy Physics, Beijing 100049, People’s Republic of China

2. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia

3. Uppsala University, Box 516, SE-75120 Uppsala, Sweden

4. Bochum Ruhr-University, D-44780 Bochum, Germany

5. Zhengzhou University, Zhengzhou 450001, People’s Republic of China

6. Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany

7. University of Turin and INFN, University of Turin, I-10125 Turin, Italy

8. INFN, I-10125 Turin, Italy

9. University of Science and Technology of China, Hefei 230026, People’s Republic of China

10. State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People’s Republic of China

11. Southeast University, Nanjing 211100, People’s Republic of China

12. Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia

13. INFN Sezione di Ferrara, I-44122 Ferrara, Italy

14. Peking University, Beijing 100871, People’s Republic of China

15. University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China

16. National Centre for Nuclear Research, Warsaw 02-093, Poland

17. Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar 13330, Mongolia

18. INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy

19. Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA

20. University of Muenster, Wilhelm-Klemm-Strasse 9, 48149 Muenster, Germany

21. Wuhan University, Wuhan 430072, People’s Republic of China

22. Turkish Accelerator Center Particle Factory Group, Istinye University, 34010, Istanbul, Turkey

23. Nankai University, Tianjin 300071, People’s Republic of China

24. China University of Geosciences, Wuhan 430074, People’s Republic of China

25. Soochow University, Suzhou 215006, People’s Republic of China

26. Henan University, Kaifeng 475004, People’s Republic of China

27. Nanjing University, Nanjing 210093, People’s Republic of China

28. North China Electric Power University, Beijing 102206, People’s Republic of China

29. Tsinghua University, Beijing 100084, People’s Republic of China

30. Institute of Modern Physics, Lanzhou 730000, People’s Republic of China

31. Jilin University, Changchun 130012, People’s Republic of China

32. Hunan University, Changsha 410082, People’s Republic of China

33. Chung-Ang University, Seoul, 06974, Republic of Korea

34. Shandong University, Jinan 250100, People’s Republic of China

35. Yunnan University, Kunming 650500, People’s Republic of China

36. Helmholtz Institute Mainz, Staudinger Weg 18, D-55099 Mainz, Germany

37. University of South China, Hengyang 421001, People’s Republic of China

38. University of Jinan, Jinan 250022, People’s Republic of China

39. Liaoning University, Shenyang 110036, People’s Republic of China

40. Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China

41. University of Eastern Piedmont, I-15121 Alessandria, Italy

42. Nanjing Normal University, Nanjing 210023, People’s Republic of China

43. University of Ferrara, I-44122 Ferrara, Italy

44. University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom

45. University of Oxford, Keble Road, Oxford OX13RH, United Kingdom

46. GSI Helmholtzcentre for Heavy Ion Research GmbH, D-64291 Darmstadt, Germany

47. Guangxi University, Nanning 530004, People’s Republic of China

48. Henan University of Technology, Zhengzhou 450001, People’s Republic of China

49. Shandong Normal University, Jinan 250014, People’s Republic of China

50. Fudan University, Shanghai 200433, People’s Republic of China

51. Indiana University, Bloomington, Indiana 47405, USA

52. Henan Normal University, Xinxiang 453007, People’s Republic of China

53. University of Hawaii, Honolulu, Hawaii 96822, USA

54. Suranaree University of Technology, University Avenue 111, Nakhon Ratchasima 30000, Thailand

55. South China Normal University, Guangzhou 510006, People’s Republic of China

56. University of the Punjab, Lahore-54590, Pakistan

57. Liaoning Normal University, Dalian 116029, People’s Republic of China

58. Hangzhou Normal University, Hangzhou 310036, People’s Republic of China

59. Huangshan College, Huangshan 245000, People’s Republic of China

60. Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, Arica 1000000, Chile

61. University of Groningen, NL-9747 AA Groningen, The Netherlands

62. Indian Institute of Technology Madras, Chennai 600036, India

63. Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany

64. Qufu Normal University, Qufu 273165, People’s Republic of China

65. Renmin University of China, Beijing 100872, People’s Republic of China

66. Lanzhou University, Lanzhou 730000, People’s Republic of China

67. Hebei University, Baoding 071002, People’s Republic of China

68. Sichuan University, Chengdu 610064, People’s Republic of China

69. Guangxi Normal University, Guilin 541004, People’s Republic of China

70. Shanxi University, Taiyuan 030006, People’s Republic of China

71. Central China Normal University, Wuhan 430079, People’s Republic of China

72. Henan University of Science and Technology, Luoyang 471003, People’s Republic of China

73. Central South University, Changsha 410083, People’s Republic of China

74. Zhejiang University, Hangzhou 310027, People’s Republic of China

75. COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, 54000 Lahore, Pakistan

76. INFN Sezione di Perugia, I-06100 Perugia, Italy

77. University of Perugia, I-06100 Perugia, Italy

78. Hunan Normal University, Changsha 410081, People’s Republic of China

79. China Center of Advanced Science and Technology, Beijing 100190, People’s Republic of China

80. Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China

81. Near East University, Nicosia, North Cyprus, 99138, Mersin 10, Turkey

82. Inner Mongolia University, Hohhot 010021, People’s Republic of China

83. Yantai University, Yantai 264005, People’s Republic of China

84. Beihang University, Beijing 100191, People’s Republic of China

85. Shanxi Normal University, Linfen 041004, People’s Republic of China

86. University of Science and Technology Liaoning, Anshan 114051, People’s Republic of China

Abstract

Based on (27.12±0.14)×108  ψ(2S) events collected by the BESIII detector, we search for the decay ηc(2S)→π+π−ηc via ψ(2S)→γηc(2S). No significant signal is observed, and the upper limit on the product branching fraction B(ψ(2S)→γηc(2S))×B(ηc(2S)→π+π−ηc) is determined to be 2.21×10−5 at the 90% confidence level. In addition, the ηc(2S)→π+π−KS0K±π∓ decay is studied via ψ(2S)→γηc(2S) and is observed with a statistical significance of 10σ for the first time. The branching fraction of ηc(2S)→π+π−KS0K±π∓ is determined to be (1.33±0.11±0.40±0.95)×10−2, where the first uncertainty is statistical, the second is systematic, and the third uncertainty is due to the quoted B(ψ(2S)→γηc(2S)). Published by the American Physical Society 2024

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Chinese Academy of Sciences

CAS Center for Excellence in Particle Physics

Key Research Program of Frontier Science, Chinese Academy of Sciences

Shanghai Key Laboratory for Particle Physics and Cosmology

HORIZON EUROPE Marie Sklodowska-Curie Actions

Deutsche Forschungsgemeinschaft

Dementia Collaborative Research Centres, Australia

Instituto Nazionale di Fisica Nucleare

Kalkinma Bakanliği

National Research Foundation of Korea

National Science and Technology Development Agency

Narodowe Centrum Nauki

Vetenskapsrådet

U.S. Department of Energy

100 Talents Program of CAS

Institute of Nuclear and Particle Physics

National Science Research and Innovation Fund

Human Resources & Institutional Development, Research and Innovation

Publisher

American Physical Society (APS)

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