Observation of the Semileptonic Decay D0 → a0(980)-e+νe and Evidence for D+ → a0(980)0e+νe

被引：63

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[10
,71
]}

Ahmed, S. ^{[15
]}

Albrecht, M. ^{[4
]}

Alekseev, M. ^{[60
,62
]}

Amoroso, A. ^{[60
,62
]}

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

An, Q. ^{[45
,46
,57
]}

Bai, Y. ^{[44
]}

Bakina, O. ^{[30
]}

Ferroli, R. Baldini ^{[23
]}

Ban, Y. ^{[38
]}

Begzsuren, K. ^{[28
]}

Bennett, D. W. ^{[22
]}

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

Berger, N. ^{[29
]}

Bertani, M. ^{[23
]}

Bettoni, D. ^{[26
]}

Bianchi, F. ^{[60
,62
]}

Boger, E. ^{[30
,69
]}

Boyko, I. ^{[30
]}

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

Cai, H. ^{[64
]}

Cai, X. ^{[1
,45
,46
]}

Calcaterra, A. ^{[23
]}

Cao, G. F. ^{[1
,51
]}

Cetin, S. A. ^{[49
]}

Chai, J. ^{[62
]}

Chang, J. F. ^{[1
,45
,46
]}

Chang, W. L. ^{[1
,51
]}

Chelkov, G. ^{[30
,69
,70
]}

Chen, G. ^{[1
]}

Chen, H. S. ^{[1
,51
]}

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

Chen, M. L. ^{[1
,45
,46
]}

Chen, S. J. ^{[36
]}

Chen, X. R. ^{[33
]}

Chen, Y. B. ^{[1
,45
,46
]}

Cheng, W. ^{[62
]}

Chu, X. K. ^{[38
]}

Cibinetto, G. ^{[26
]}

Cossio, F. ^{[62
]}

Dai, H. L. ^{[1
,45
,46
]}

Dai, J. P. ^{[40
,75
,76
,77
]}

Dbeyssi, A. ^{[15
]}

Dedovich, D. ^{[30
]}

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

Denig, A. ^{[29
]}

Denysenko, I. ^{[30
]}

Destefanis, M. ^{[60
,62
]}

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] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

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

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

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

[9] Fudan Univ, Shanghai 200443, Peoples R China

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

[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, Zhejiang, Peoples R China

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

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

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

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

[22] Indiana Univ, Bloomington, IN 47405 USA

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

[24] INFN, 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 Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia

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

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

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

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

[33] Lanzhou Univ, Lanzhou 730000, Gansu, Peoples R China

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

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

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

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

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

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

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

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

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

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

[44] Southeast Univ, Nanjing 211100, Jiangsu, Peoples R China

[45] State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China

[46] State Key Lab Particle Detect & Elect, Hefei 230026, Anhui, Peoples R China

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

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

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

[50] Near East Univ, Nicosia 10, North Cyprus, Turkey

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 08期

基金：

中国国家自然科学基金; 瑞典研究理事会;

关键词：

E(+)E(-);

D O I：

10.1103/PhysRevLett.121.081802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using an e(+)e(-) collision data sample of 2.93 fb(-1) collected at a center-of-mass energy of 3.773 GeV by the BESIII detector at BEPCII, we report the observation of D-0 -> a(0)(980)(-)e(+)nu(e) and evidence for D+ -> a(0)(980)(0)e(+)nu(e) with significances of 6.4 sigma and 2.9 sigma, respectively. The absolute branching fractions are determined to be B(D-0 -> a(0)(980)(-)e(+)nu(e)) x B(a(0)(980)(-) -> eta pi(-)) = [1.33(-0.29)(+0.33)(stat) +/- 0.09(syst)] x 10(-4) and B(D+ -> a(0)(980)(0)e(+)nu(e)) x B(a(0)(980)(0) -> eta pi(0)) = [1.66(-0.66)(+0.81)(stat) +/- 0.11(syst) x 10(-4). This is the first time the a(0)(980) meson has been measured in a D-0 semileptonic decay, which would open one more interesting page in the investigation of the nature of the puzzling a(0)(980) states.

引用

页数：8

共 50 条

[31] Reanalysis of data on a0(1450) and a0(980)
Bugg, D. V.
PHYSICAL REVIEW D, 2008, 78 (07):
[32] a0(980) - f0(980) mixing in χc1 → π0f0(980) → π0π+π- and χc1 → π0 a0(980) → π0π0η
Bayar, M.
Debastiani, V. R.
PHYSICS LETTERS B, 2017, 775 : 94 - 99
[33] Photoproduction of a0(980) and f0(980)
Donnachie, A.
Kalashnikova, Yu. S.
PHYSICAL REVIEW C, 2016, 93 (02)
[34] Evidence that the a0(980) and f0(980) are not elementary particles
Baru, V
Haidenbauer, J
Hanhart, C
Kalashnikova, Y
Kudryavtsev, A
PHYSICS LETTERS B, 2004, 586 (1-2) : 53 - 61
[35] Observation of D+ → f0 (500)e+ νe and Improved Measurements of D → ρe+ νe
Ablikim, M.
Achasov, M. N.
Ahmed, S.
Albrecht, M.
Alekseev, M.
Amoroso, A.
An, F. F.
An, Q.
Bai, Y.
Bakina, O.
Ferroli, R. Baldini
Ban, Y.
Begzsuren, K.
Bennett, D. W.
Bennett, J. V.
Berger, N.
Bertani, M.
Bettoni, D.
Bianchi, F.
Boger, E.
Boyko, I.
Briere, R. A.
Cai, H.
Cai, X.
Calcaterra, A.
Cao, G. F.
Cetin, S. A.
Chai, J.
Chang, J. F.
Chang, W. L.
Chelkov, G.
Chen, G.
Chen, H. S.
Chen, J. C.
Chen, M. L.
Chen, P. L.
Chen, S. J.
Chen, X. R.
Chen, Y. B.
Cheng, W.
Chu, X. K.
Cibinetto, G.
Cossio, F.
Dai, H. L.
Dai, J. P.
Dbeyssi, A.
Dedovich, D.
Deng, Z. Y.
Denig, A.
Denysenko, I.
PHYSICAL REVIEW LETTERS, 2019, 122 (06)
[36] Decays of σ, κ, a0(980) and f0(980)
D.V. Bugg
The European Physical Journal C - Particles and Fields, 2006, 47 : 57 - 64
[37] The nature of σ, κ, a0(980) and f0(980)
van Beveren, E.
Bugg, D. V.
Kleefeld, F.
Rupp, G.
PHYSICS LETTERS B, 2006, 641 (3-4) : 265 - 271
[38] a0(980) revisited
Wolkanowski, Thomas
Giacosa, Francesco
Rischke, Dirk H.
PHYSICAL REVIEW D, 2016, 93 (01)
[39] Search for the semileptonic decay Ds+ → π0e+νe
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.
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.
Chu, X.
Cibinetto, G.
PHYSICAL REVIEW D, 2022, 106 (11)
[40] Study of scalar meson a0(980) from B → a0(980)π decays
Zhang Zhi-Qing
Xiao Zhen-Jun
CHINESE PHYSICS C, 2010, 34 (05) : 528 - 534

← 1 2 3 4 5 →