Measurement of Singly Cabibbo Suppressed Decays Λc+ → pπ+π- and Λc+ → pK+K-

被引：38

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[9
]}

Ahmed, S. ^{[14
]}

Ai, X. C. ^{[1
]}

Albayrak, O. ^{[5
]}

Albrecht, M. ^{[4
]}

Ambrose, D. J. ^{[50
]}

Amoroso, A. ^{[1
,52
,55
,57
,59
]}

An, F. F. ^{[1
]}

An, Q. ^{[52
]}

Bai, J. Z. ^{[1
]}

Bakina, O. ^{[26
]}

Ferroli, R. Baldini ^{[20
]}

Ban, Y. ^{[34
]}

Bennett, D. W. ^{[19
]}

Bennett, J. V. ^{[5
]}

Berger, N. ^{[25
]}

Bertani, M. ^{[20
]}

Bettoni, D. ^{[23
]}

Bian, J. M. ^{[49
]}

Bianchi, F. ^{[55
,57
]}

Boger, E. ^{[26
]}

Boyko, I. ^{[26
]}

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

Cai, H. ^{[59
]}

Cai, X. ^{[1
]}

Cakir, O. ^{[43
]}

Calcaterra, A. ^{[20
,55
]}

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

Cetin, S. A. ^{[44
]}

Chai, J. ^{[57
]}

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

Chelkov, G. ^{[26
,62
,63
]}

Chen, G. ^{[1
]}

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

Chen, J. C. ^{[1
]}

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

Chen, S. ^{[47
]}

Chen, S. J. ^{[32
]}

Chen, X. ^{[1
]}

Chen, X. R. ^{[29
]}

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

Cheng, H. P. ^{[17
]}

Chu, X. K. ^{[34
]}

Cibinetto, G. ^{[23
]}

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

Dai, J. P. ^{[37
]}

Dbeyssi, A. ^{[14
]}

Dedovich, D. ^{[26
]}

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

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] Ruhr Univ Bochum, D-44780 Bochum, Germany

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

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

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

[8] COMSATS Inst Informat Technol, Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan

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

[10] GSI Helmholtz Ctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany

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

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

[13] Hangzhou Normal Univ, Hangzhou 310036, Zhejiang, Peoples R China

[14] Helmholtz Inst Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany

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

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

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

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

[19] Indiana Univ, Bloomington, IN 47405 USA

[20] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[21] Ist Nazl Fis Nucl, I-06100 Perugia, Italy

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

[23] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy

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

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

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

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

[28] Univ Groningen, KVI CART, NL-9747 AA Groningen, Netherlands

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

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

[31] Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China

[32] Nanjing Univ, Nanjing 210093, Jiangsu, Peoples R China

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

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

[35] Seoul Natl Univ, Seoul 151747, South Korea

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

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

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

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

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

[41] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China

[42] Tsinghua Univ, Beijing 100084, Peoples R China

[43] Ankara Univ, TR-06100 Ankara, Turkey

[44] Istanbul Bilgi Univ, TR-34060 Istanbul, Turkey

[45] Uludag Univ, TR-16059 Bursa, Turkey

[46] Near East Univ, Nicosia, Cyprus

[47] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[48] Univ Hawaii, Honolulu, HI 96822 USA

[49] Univ Minnesota, Minneapolis, MN 55455 USA

[50] Univ Rochester, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 23期

基金：

美国国家科学基金会; 中国国家自然科学基金; 俄罗斯基础研究基金会; 新加坡国家研究基金会;

关键词：

NONLEPTONIC DECAYS; WEAK DECAYS; QUARK; MODEL;

D O I：

10.1103/PhysRevLett.117.232002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using 567 pb(-1) of data collected with the BESIII detector at a center-of-mass energy of root s = 4.599 GeV, near the Lambda(+)(c)->(Lambda) over bar (-)(c) threshold, we study the singly Cabibbo-suppressed decays Lambda c(+) -> p pi(+) pi(-) and Lambda(+)(c) -> pK(+) K- By normalizing with respect to the Cabibbo-favored decay Lambda(+)(c)-> p pi(+)pi(-) we obtain ratios of branching fractions: [B(Lambda(+)(c) -> p pi(+)pi(-))/B(Lambda(+)(c) -> pK(-)pi(+))] = (6.70 +/- 0.48 +/- 0.25)% [B Lambda(+)(c) -> p phi)/B(Lambda(+)(c) -> pK(-)pi(+))] = (1.81 +/- 0.33 +/- 0.13)%,and [B(Lambda(+)(c) -> pK(+)K(non-phi)(-)/B(Lambda(+)(c) -> pK(-)pi(+))] (9.36 +/- 2.22 +/- 0.71)x10(-3), where the uncertainties are statistical and systematic, respectively. The absolute branching fractions are also presented. Among these measurements, the decay Lambda(+)(c) -> p pi(+)pi(-) is observed for the first time, and the precision of the branching fraction for Lambda(+)(c) -> pK(+)K(non-phi)(-) and Lambda(+)(c) -> p phi is significantly improved.

引用

页数：7

共 50 条

[1] Publisher's Note: Measurement of Singly Cabibbo Suppressed Decays Λc+ → pπ+π- and Λc+ → pK+K- (vol 117, 232002, 2016)
Ablikim, M.
PHYSICAL REVIEW LETTERS, 2018, 120 (02)
[2] Measurement of the branching fractions of the singly Cabibbo-suppressed decays Λc+→pη and Λc+→pω
Ablikim, M.
Achasov, M. N.
Adlarson, P.
Aliberti, R.
Amoroso, A.
An, M. R.
An, Q.
Bai, Y.
Bakina, O.
Balossino, I.
Ban, Y.
Batozskaya, V.
Begzsuren, K.
Berger, N.
Berlowski, M.
Bertani, M.
Bettoni, D.
Bianchi, F.
Bianco, E.
Bloms, J.
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Boyko, I.
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Cai, H.
Cai, X.
Calcaterra, A.
Cao, G. F.
Cao, N.
Cetin, S. A.
Chang, J. F.
Chang, T. T.
Chang, W. L.
Che, G. R.
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Chen, C.
Chen, Chao
Chen, G.
Chen, H. S.
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Chen, S. J.
Chen, S. M.
Chen, T.
Chen, X. R.
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Chen, Y. Q.
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JOURNAL OF HIGH ENERGY PHYSICS, 2023, (11):
[3] Singly Cabibbo-suppressed hadronic decays of Λc+
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Xu, Fanrong
PHYSICAL REVIEW D, 2018, 97 (07)
[4] Evidence for the singly Cabibbo suppressed decay Λc+ → pη and search for Λc+ → pπ0
Ablikim, M.
Achasov, M. N.
Ahmed, S.
Ai, X. C.
Albayrak, O.
Albrecht, M.
Ambrose, D. J.
Amoroso, A.
An, F. F.
An, Q.
Bai, J. Z.
Bakina, O.
Ferroli, R. Baldini
Ban, Y.
Bennett, D. W.
Bennett, J. V.
Berger, N.
Bertani, M.
Bettoni, D.
Bian, J. M.
Bianchi, F.
Boger, E.
Boyko, I.
Briere, R. A.
Cai, H.
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Cakir, O.
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Cao, G. F.
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Chen, H. S.
Chen, J. C.
Chen, M. L.
Chen, S. J.
Chen, X. R.
Chen, Y. B.
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Dai, J. P.
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Dedovich, D.
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[5] First observation of the Cabibbo-suppressed decays Ξc+→Σ+π-π+ and Ξc+→Σ-π+π+ and measurement of their branching ratios
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Kushnirenko, A.
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Lache, J.
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PHYSICS LETTERS B, 2008, 666 (04) : 299 - 304
[6] Singly Cabibbo suppressed decays of Λc+ with SU(3) flavor symmetry
Geng, Chao-Qiang
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Tsai, Tien-Hsueh
PHYSICS LETTERS B, 2019, 790 : 225 - 228
[7] Observations of the singly Cabibbo-suppressed decays Ξc+ → pKS0, Ξc+ → Λπ+, and Ξc+ →Σ0π+ at Belle and Belle II
Adachi, I.
Aggarwal, L.
Akopov, N.
Alhakami, M.
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Casarosa, G.
Cecchi, C.
Cerasoli, J.
Chang, M-C
JOURNAL OF HIGH ENERGY PHYSICS, 2025, (03):
[8] Measurement of the absolute branching fraction of the singly Cabibbo suppressed decay Λc+ → pη′
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Adlarson, P.
Albrecht, M.
Aliberti, R.
Amoroso, A.
An, M. R.
An, Q.
Bai, X. H.
Bai, Y.
Bakina, O.
Ferroli, R. Baldini
Balossino, I
Ban, Y.
Batozskaya, V
Becker, D.
Begzsuren, K.
Berger, N.
Bertani, M.
Bettoni, D.
Bianchi, F.
Bloms, J.
Bortone, A.
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Briere, R. A.
Brueggemann, A.
Cai, H.
Cai, X.
Calcaterra, A.
Cao, G. F.
Cao, N.
Cetin, S. A.
Chang, J. F.
Chang, W. L.
Chelkov, G.
Chen, C.
Chen, Chao
Chen, G.
Chen, H. S.
Chen, M. L.
Chen, S. J.
Chen, S. M.
Chen, T.
Chen, X. R.
Chen, X. T.
Chen, Y. B.
Chen, Z. J.
Cheng, W. S.
Choi, S. K.
Chu, X.
PHYSICAL REVIEW D, 2022, 106 (07)
[9] Evidence of the singly Cabibbo suppressed decay Λc+ → pΠ0
Ablikim, M.
Achasov, M. N.
Adlarson, P.
Ai, X. C.
Aliberti, R.
Amoroso, A.
An, M. R.
An, Q.
Bai, Y.
Bakina, O.
Balossino, I.
Ban, Y.
Batozskaya, V.
Begzsuren, K.
Berger, N.
Berlowski, M.
Bertani, M.
Bettoni, D.
Bianchi, F.
Bianco, E.
Bortone, A.
Boyko, I.
Briere, R. A.
Brueggemann, A.
Cai, H.
Cai, X.
Calcaterra, A.
Cao, G. F.
Cao, N.
Cetin, S. A.
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.
Chen, S. M.
Chen, T.
Chen, X. R.
Chen, X. T.
Chen, Y. B.
Chen, Y. Q.
Chen, Z. J.
Cheng, W. S.
Choi, S. K.
PHYSICAL REVIEW D, 2024, 109 (09)
[10] Measurement of the branching fraction of the singly Cabibbo-suppressed decay Λc+ → ΛK+
Ablikim, M.
Achasov, M. N.
Adlarson, P.
Albrecht, M.
Aliberti, R.
Amoroso, A.
An, M. R.
An, Q.
Bai, X. H.
Bai, Y.
Bakina, O.
Ferroli, R. Baldini
Balossino, I
Ban, Y.
Bao, S. S.
Batozskaya, V
Becker, D.
Begzsuren, K.
Berger, N.
Bertani, M.
Bettoni, D.
Bianchi, F.
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.
Chang, J. F.
Chang, W. L.
Chelkov, G.
Chen, C.
Chen, Chao
Chen, G.
Chen, H. S.
Chen, M. L.
Chen, S. J.
Chen, S. M.
Chen, T.
Chen, X. R.
Chen, X. T.
Chen, Y. B.
Chen, Z. J.
Cheng, W. S.
Choi, S. K.
PHYSICAL REVIEW D, 2022, 106 (11)

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