Measurements of KS0-KL0 asymmetries in the decays Λc+→ pKL,S0, pKL,S0 π+ π- and pKL,S0 π0

被引：3

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[4
,90
]}

Adlarson, P. ^{[83
]}

Afedulidis, O. ^{[3
]}

Ai, X. C. ^{[88
]}

Aliberti, R. ^{[38
]}

Amoroso, A. ^{[79
,80
,82
]}

An, Q. ^{[61
,76
]}

Bai, Y. ^{[60
]}

Bakina, O. ^{[39
]}

Balossino, I. ^{[31
]}

Ban, Y. ^{[49
,98
]}

Bao, H. -R. ^{[68
]}

Batozskay, V. ^{[1
,47
]}

Begzsuren, K. ^{[35
]}

Berger, N. ^{[38
]}

Berlowski, M. ^{[47
]}

Bertani, M. ^{[28
]}

Bettoni, D. ^{[31
]}

Bianchi, F. ^{[79
,80
,82
]}

Bianco, E. ^{[79
,80
,82
]}

Bortone, A. ^{[79
,80
,82
]}

Boyko, I. ^{[39
]}

Briere, R. A. ^{[5
]}

Brueggemann, A. ^{[73
]}

Cai, H. ^{[84
]}

Cai, X. ^{[1
,61
]}

Calcaterra, A. ^{[28
]}

Cao, G. F. ^{[1
,68
]}

Cao, N. ^{[1
,68
]}

Cetin, S. A. ^{[65
]}

Chai, X. Y. ^{[49
,98
]}

Chang, J. F. ^{[1
,61
]}

Che, G. R. ^{[46
]}

Che, Y. Z. ^{[1
,61
,68
]}

Chelkov, G. ^{[39
,89
]}

Chen, C. ^{[46
]}

Chen, C. H. ^{[9
]}

Chen, Chao ^{[58
]}

Chen, G. ^{[1
]}

Chen, H. S. ^{[1
,68
]}

Chen, H. Y. ^{[20
]}

Chen, M. L. ^{[1
,61
,68
]}

Chen, S. J. ^{[45
]}

Chen, S. L. ^{[48
]}

Chen, S. M. ^{[64
]}

Chen, T. ^{[1
,68
]}

Chen, X. R. ^{[34
,68
]}

Chen, X. T. ^{[1
,68
]}

Chen, Y. B. ^{[1
,61
]}

机构：

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

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

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

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

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

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

[7] Cent South Univ, Changsha 410083, Peoples R China

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

[9] China Univ Geosci, Wuhan 430074, Peoples R China

[10] Chung Ang Univ, Seoul 06974, South Korea

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

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

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

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

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

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

[17] Hebei Univ, Baoding 071002, Peoples R China

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

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

[20] Henan Univ, Kaifeng 475004, Peoples R China

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

[22] Henan Univ Technol, Zhengzhou 450001, Peoples R China

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

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

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

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

[27] Indiana Univ, Bloomington, IN 47405 USA

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

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

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

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

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

[33] Inner Mongolia Univ, Hohhot 010021, Peoples R China

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

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

[36] Univ Tarapaca, Inst Alta Invest, Casilla 7D, Arica 1000000, Chile

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

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

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

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

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

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

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

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

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

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

[47] Natl Ctr Nucl Res, PL-02093 Warsaw, Poland

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

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

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 09期

基金：

中国国家自然科学基金; 瑞典研究理事会; 新加坡国家研究基金会;

关键词：

Charm Physics; e(+)-e(-) Experiments; CHARMED-BARYON DECAYS; NONLEPTONIC DECAYS; WEAK DECAYS; MODEL;

D O I：

10.1007/JHEP09(2024)007

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Using e(+)e(-) annihilation data sets corresponding to an integrated luminosity of 4.5 fb(-1), collected with the BESIII detector at center-of-mass energies between 4.600 and 4.699 GeV, we report the first measurements of the absolute branching fractions B(Lambda(+)(c)-> pK(L)(0) = (1.67 +/- 0.06 +/- 0.04)%, B(Lambda(+)(c)-> pK(L)(0) pi(+)pi(-) = (1.69 +/- 0.10 +/- 0.05)%, and B(Lambda(+)(c)-> pK(L)(0)pi(0) = (2.02 +/- 0.13 +/- 0.05)%, where the first uncertainties are statistical and the second systematic. Combining with the known branching fractions of Lambda(+)(c)-> pK(S)(0), Lambda(+)(c)-> pK(S)(0) pi(+)pi(-), and Lambda(+)(c)-> pK(S)(0)pi(0), we present the first measurements of the K-S(0)-K-L(0) asymmetries R(Lambda K-+(c)S,L(0) X) = B(Lambda(+)(c) -> (KSX)-X-0-B (Lambda(+)(c)-> K-L(0) X/B(Lambda(+)(c)->(KSX)-X-0)+B(Lambda(+)(c)->(KLX)-X-0) in charmed baryon decays: R(Lambda(+)(c)pK(S,L)(0)) = -0.025 +/- 0.031, R(Lambda(+)(c)pK(S,L)(0) pi(+)pi(-)) = -0.027 +/- 0.048 and R(Lambda(+)(c)pK(S,L)(0)pi(0) = -0.015 +/- 0.046. No significant asymmetries with statistical significance are observed.

引用

页数：20

共 51 条

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