Measurement of the CKM matrix element |Vcb| from B0 → D*-l+νl at Belle

被引：54

作者：

Waheed, E. ^{[52
]}

Urquijo, P. ^{[52
]}

Ferlewicz, D. ^{[52
]}

Adachi, I. ^{[15
,19
]}

Adamczyk, K. ^{[64
]}

Aihara, H. ^{[88
]}

Al Said, S. ^{[37
,82
]}

Asner, D. M. ^{[4
]}

Atmacan, H. ^{[79
]}

Aushev, T. ^{[56
]}

Ayad, R. ^{[82
]}

Babu, V. ^{[83
]}

Badhrees, I. ^{[36
,82
]}

Bansal, V. ^{[70
]}

Behera, P. ^{[25
]}

Beleno, C. ^{[14
]}

Bernlochner, F. ^{[3
]}

Bhuyan, B. ^{[23
]}

Bilka, T. ^{[6
]}

Biswal, J. ^{[33
]}

Bobrov, A. ^{[5
,68
]}

Bonvicini, G. ^{[92
]}

Bozek, A. ^{[64
]}

Bracko, M. ^{[33
,50
]}

Browder, T. E. ^{[18
]}

Campajola, M. ^{[30
,59
]}

Cervenkov, D. ^{[6
]}

Chang, P. ^{[63
]}

Chekelian, V. ^{[51
]}

Chen, A. ^{[61
]}

Cheon, B. G. ^{[17
]}

Chilikin, K. ^{[45
]}

Cho, H. E. ^{[17
]}

Cho, K. ^{[39
]}

Choi, S. -K. ^{[16
]}

Choi, Y. ^{[80
]}

Choudhury, S. ^{[24
]}

Cinabro, D. ^{[92
]}

Cunliffe, S. ^{[9
]}

Di Carlo, S. ^{[43
]}

Dolezal, Z. ^{[6
]}

Dong, T. V. ^{[15
,19
]}

Dossett, D. ^{[52
]}

Eidelman, S. ^{[5
,45
,68
]}

Epifanov, D. ^{[5
,68
]}

Fast, J. E. ^{[70
]}

Fulsom, B. G. ^{[70
]}

Garg, R. ^{[71
]}

Gaur, V. ^{[91
]}

Garmash, A. ^{[5
,68
]}

机构：

[1] Univ Basque Country UPV EHU, Bilbao 48080, Spain

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

[3] Univ Bonn, D-53115 Bonn, Germany

[4] Brookhaven Natl Lab, Upton, NY 11973 USA

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

[6] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic

[7] Chonnam Natl Univ, Kwangju 660701, South Korea

[8] Univ Cincinnati, Cincinnati, OH 45221 USA

[9] DESY, D-22607 Hamburg, Germany

[10] Duke Univ, Durham, NC 27708 USA

[11] Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200443, Peoples R China

[12] Fudan Univ, Inst Modern Phys, Shanghai 200443, Peoples R China

[13] Justus Liebig Univ Giessen, D-35392 Giessen, Germany

[14] Georg August Univ Gottingen, Inst Phys 2, D-37073 Gottingen, Germany

[15] SOKENDAI, Hayama 2400193, Japan

[16] Gyeongsang Natl Univ, Chinju 660701, South Korea

[17] Hanyang Univ, Seoul 133791, South Korea

[18] Univ Hawaii, Honolulu, HI 96822 USA

[19] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[20] High Energy Accelerator Res Org KEK, KEK Theory Ctr, J PARC Branch, Tsukuba, Ibaraki 3050801, Japan

[21] Forschungszentrum Julich, D-52425 Julich, Germany

[22] Ikerbasque, Basque Fdn Sci, Bilbao 48013, Spain

[23] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India

[24] Indian Inst Technol Hyderabad, Hyderabad 502285, Telangana, India

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

[26] Indiana Univ, Bloomington, IN 47408 USA

[27] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[28] Inst High Energy Phys, A-1050 Vienna, Austria

[29] Inst High Energy Phys, Protvino 142281, Russia

[30] INFN, Sez Napoli, I-80126 Naples, Italy

[31] INFN, Sez Torino, I-10125 Turin, Italy

[32] Japan Atom Energy Agcy, Adv Sci Res Ctr, Naka 3191195, Japan

[33] J Stefan Inst, Ljubljana 1000, Slovenia

[34] Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany

[35] Kennesaw State Univ, Kennesaw, GA 30144 USA

[36] King Abdulaziz City Sci & Technol, Riyadh 11442, Saudi Arabia

[37] King Abdulaziz Univ, Fac Sci, Dept Phys, Jeddah 21589, Saudi Arabia

[38] Kitasato Univ, Sagamihara, Kanagawa 2520373, Japan

[39] Korea Inst Sci & Technol Informat, Daejeon 305806, South Korea

[40] Korea Univ, Seoul 136713, South Korea

[41] Kyoto Univ, Kyoto 6068502, Japan

[42] Kyungpook Natl Univ, Taegu 702701, South Korea

[43] Univ Paris Saclay, Univ Paris Sud, IN2P3, CNRS,LAL, Orsay, France

[44] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[45] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

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

[47] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[48] Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany

[49] Univ Malaya, Kuala Lumpur 50603, Malaysia

[50] Univ Maribor, SLO-2000 Maribor, Slovenia

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 05期

基金：

澳大利亚研究理事会; 美国国家科学基金会; 新加坡国家研究基金会; 美国能源部; 日本学术振兴会; 瑞士国家科学基金会; 中国国家自然科学基金; 奥地利科学基金会;

关键词：

DISPERSIVE BOUNDS; IDENTIFICATION;

D O I：

10.1103/PhysRevD.100.052007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar from B-0 -> D*(-)l(+)nu(l) decays, reconstructed with the full Belle data set of 711 fb(-1) integrated luminosity. Two form factor parametrizations, originally conceived by the Caprivi-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product F(1)eta(EW)vertical bar V-cb vertical bar and the decay form factors, where F(1) is the normalization factor and eta(EW) is a small electroweak correction. In the CLN parametrization we find F(1)eta(EW)vertical bar V-cb vertical bar = (35.06 +/- 0.15 +/- 0.56) x 10(-3), rho(2) = 1.106 +/- 0.031 +/- 0.007, R-1 (1) = 1.229 +/- 0.028 +/- 0.009, R-2(1) = 0.852 +/- 0.021 +/- 0.006. For the BGL parametrization we obtain ,F(1)eta(EW)vertical bar V-cb vertical bar = (34.93 +/- 0.23 +/- 0.59) x 10(-3), which is consistent with the world average when correcting for F(1)eta(EW). The branching fraction of B-0 -> D*(-)l(+)nu(l )is measured to be B(B-0 -> D*(-)l(+)nu(l))= (4.90 +/- 0.02 +/- 0.16)%. We also present a new test of lepton flavor universality violation in semileptonic B decays, B(B-0 -> D*(-)e(+)nu)/B(B-0 -> D*(-)mu(+)nu) = 1.01 +/- 0.01 +/- 0.03. The errors quoted correspond to the statistical and systematic uncertainties, respectively. This is the most precise measurement of F(1)eta(EW)vertical bar V-cb vertical bar and form factors to date and the first experimental study of the BGL form factor parametrization in an experimental measurement.

引用

页数：32

共 32 条

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