Search for <overline>Λ-Λ Baryon-Number-Violating Oscillations in the Decay J/ψ → pK - Λ plus c.c.

被引：2

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[5
]}

Adlarson, P. ^{[75
]}

Ahmed, S. ^{[15
]}

Albrecht, M. ^{[4
]}

Aliberti, R. ^{[31
]}

Amoroso, A. ^{[71
,72
,74
]}

An, Q. ^{[52
,53
,68
]}

Bai, Y. ^{[51
]}

Bakina, O. ^{[32
]}

Ferroli, R. Baldini ^{[23
]}

Balossino, I. ^{[26
]}

Ban, Y. ^{[41
]}

Begzsuren, K. ^{[29
]}

Berger, N. ^{[31
]}

Bertani, M. ^{[23
]}

Bettoni, D. ^{[26
]}

Bianchi, F. ^{[71
,72
,74
]}

Bloms, J. ^{[65
]}

Bortone, A. ^{[71
,72
,74
]}

Boyko, I. ^{[32
]}

Briere, R. A. ^{[6
]}

Cai, H. ^{[76
]}

Cai, X. ^{[1
,52
,53
]}

Calcaterra, A. ^{[23
]}

Cao, G. F. ^{[1
,59
]}

Cao, N. ^{[1
,59
]}

Cetin, S. A. ^{[57
]}

Chang, J. F. ^{[1
,52
,53
]}

Chang, W. L. ^{[1
,59
]}

Chelkov, G. ^{[32
]}

Chen, G. ^{[1
]}

Chen, H. S. ^{[1
,59
]}

Chen, M. L. ^{[1
,52
,53
,59
]}

Chen, S. J. ^{[38
]}

Chen, X. R. ^{[28
,59
]}

Chen, Y. B. ^{[1
,52
,53
]}

Chen, Z. J. ^{[20
]}

Cheng, W. S. ^{[74
]}

Cibinetto, G. ^{[26
]}

Cossio, F. ^{[74
]}

Dai, H. L. ^{[1
,52
,53
]}

Dai, J. P. ^{[45
]}

Dai, X. C. ^{[1
,59
]}

Dbeyssi, A. ^{[15
]}

de Boer, R. E. ^{[4
]}

Dedovich, D. ^{[32
]}

Deng, Z. Y. ^{[1
]}

Denig, A. ^{[31
]}

Denysenko, I. ^{[32
]}

机构：

[1] Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Beihang Univ, Beijing 100191, Peoples R China

[3] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China

[4] Bochum Ruhr Univ, D-44780 Bochum, Germany

[5] RAS, Budker Inst Nucl Phys, SB, Novosibirsk 630090, Russia

[6] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[7] Cent China Normal Univ, Wuhan 430079, Peoples R China

[8] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China

[9] COMSATS Univ Islamabad, Lahore Campus,Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan

[10] Fudan Univ, Shanghai 200433, Peoples R China

[11] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany

[12] Guangxi Normal Univ, Guilin 541004, Peoples R China

[13] Guangxi Univ, Nanning 530004, Peoples R China

[14] Hangzhou Normal Univ, Hangzhou 310036, Peoples R China

[15] Helmholtz Inst Mainz, Staudinger Weg 18, D-55099 Mainz, Germany

[16] Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China

[17] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China

[18] Huangshan Coll, Huangshan 245000, Peoples R China

[19] Hunan Normal Univ, Changsha 410081, Peoples R China

[20] Hunan Univ, Changsha 410082, Peoples R China

[21] Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, India

[22] Indiana Univ, Bloomington, IN 47405 USA

[23] INFN Lab Nazl Frascati, I-00044 Frascati, Italy

[24] INFN Sez Perugia, I-06100 Perugia, Italy

[25] Univ Perugia, I-06100 Perugia, Italy

[26] INFN Sez Ferrara, I-44122 Ferrara, Italy

[27] Univ Ferrara, I-44122 Ferrara, Italy

[28] Inst Modern Phys, Lanzhou 730000, Peoples R China

[29] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia

[30] Jilin Univ, Changchun 130012, Peoples R China

[31] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany

[32] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[33] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany

[34] Lanzhou Univ, Lanzhou 730000, Peoples R China

[35] Liaoning Normal Univ, Dalian 116029, Peoples R China

[36] Liaoning Univ, Shenyang 110036, Peoples R China

[37] Nanjing Normal Univ, Nanjing 210023, Peoples R China

[38] Nanjing Univ, Nanjing 210093, Peoples R China

[39] Nankai Univ, Tianjin 300071, Peoples R China

[40] North China Elect Power Univ, Beijing 102206, Peoples R China

[41] Peking Univ, Beijing 100871, Peoples R China

[42] Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China

[43] Shandong Normal Univ, Jinan 250014, Peoples R China

[44] Shandong Univ, Jinan 250100, Peoples R China

[45] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China

[46] Shanxi Normal Univ, Linfen 041004, Shanxi, Peoples R China

[47] Shanxi Univ, Taiyuan 030006, Peoples R China

[48] Sichuan Univ, Chengdu 610064, Peoples R China

[49] Soochow Univ, Suzhou 215006, Peoples R China

[50] South China Normal Univ, Guangzhou 510006, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 131卷 / 12期

基金：

瑞典研究理事会;

关键词：

LEPTON-NUMBER;

D O I：

10.1103/PhysRevLett.131.121801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the first search for Lambda -Lambda oscillations in the decay J=psi -> pK- Lambda & thorn; c:c: by analyzing 1.31 x 10(9) J=psi events accumulated with the BESIII detector at the BEPCII collider. The J=psi events are produced using e(+) e(-) collisions at a center of mass energy root s= 3.097 GeV. No evidence for hyperon oscillations is observed. The upper limit for the oscillation rate of Lambda to Lambda hyperons is determined to be P(Lambda)=[B(J/psi -> pK(-)Lambda + c:c.)/B(J/psi -> pK(-) Lambda & thorn; c:c.)] < 4.4 x 10(-6) corresponding to an oscillation parameter delta m(Lambda Lambda) of less than 3.8 x 10(-18) GeV at the 90% confidence level.

引用

页数：7

共 50 条

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曹宁
S.A.Cetin
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陈超
陈刚
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陈申见
陈少敏
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Aliberti, R.
Amoroso, A.
An, M. R.
An, Q.
Bai, Y.
Bakina, O.
Baldini Ferroli, R.
Balossino, I.
Ban, Y.
Batozskaya, V.
Becker, D.
Begzsuren, K.
Berger, N.
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Bettoni, D.
Bianchi, F.
Bianco, E.
Bloms, J.
Bortone, A.
Boyko, I.
Briere, R. A.
Brueggemann, A.
Cai, H.
Cai, X.
Calcaterra, A.
Cao, G. F.
Cao, N.
Cetin, S. A.
Chai, X. Y.
Chang, J. F.
Chang, T. T.
Chang, W. L.
Che, G. R.
Chelkov, G.
Chen, C.
Chen, Chao
Chen, G.
Chen, H. S.
Chen, M. L.
Chen, S. J.
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PHYSICAL REVIEW LETTERS, 2023, 131 (15)

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