Measurement of the branching fraction and CP asymmetry for B → (D)over-bar0π decays

被引：2

作者：

Bloomfield, T. ^{[54
]}

Sevior, M. E. ^{[54
]}

Adachi, I. ^{[16
,21
]}

Aihara, H. ^{[90
]}

Al Said, S. ^{[39
,84
]}

Asner, D. M. ^{[3
]}

Aulchenko, V. ^{[4
,67
]}

Aushev, T. ^{[23
]}

Ayad, R. ^{[84
]}

Babu, V. ^{[8
]}

Bahinipati, S. ^{[26
]}

Behera, P. ^{[28
]}

Bennett, J. ^{[55
]}

Bessner, M. ^{[20
]}

Bilka, T. ^{[5
]}

Biswal, J. ^{[36
]}

Bobrov, A. ^{[4
,67
]}

Bonvicini, G. ^{[95
]}

Bozek, A. ^{[64
]}

Bracko, M. ^{[36
,52
]}

Browder, T. E. ^{[20
]}

Campajola, M. ^{[33
,59
]}

Cao, L. ^{[2
]}

Cervenkov, D. ^{[5
]}

Chang, M. -C ^{[11
]}

Chekelian, V. ^{[53
]}

Chen, A. ^{[61
]}

Cheon, B. G. ^{[18
,19
]}

Chilikin, K. ^{[46
]}

Cho, H. E. ^{[18
,19
]}

Cho, K. ^{[41
]}

Cho, S. -J. ^{[97
]}

Choi, S. -K. ^{[17
]}

Choi, Y. ^{[82
]}

Choudhury, S. ^{[27
]}

Cinabro, D. ^{[95
]}

Cunliffe, S. ^{[8
]}

Das, S. ^{[51
]}

Dash, N. ^{[28
]}

De Nardo, G. ^{[33
,59
]}

Dhamija, R. ^{[27
]}

Di Capua, F. ^{[33
,59
]}

Dolezal, Z. ^{[5
]}

V. Dong, T. ^{[12
,13
]}

Dubey, S. ^{[20
]}

Eidelman, S. ^{[4
,46
,67
]}

Epifanov, D. ^{[4
,67
]}

Ferber, T. ^{[8
]}

Ferlewicz, D. ^{[54
]}

Fulsom, B. G. ^{[69
]}

机构：

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

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

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

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

[5] Charles Univ Prague, Fac Math & Phys, Prague 12116, Czech Republic

[6] Chonnam Natl Univ, Gwangju 61186, South Korea

[7] Univ Cincinnati, Cincinnati, OH 45221 USA

[8] DESY, D-22607 Hamburg, Germany

[9] Duke Univ, Durham, NC 27708 USA

[10] Univ Florida, Gainesville, FL 32611 USA

[11] Fu Jen Catholic Univ, Dept Phys, Taipei 24205, Taiwan

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

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

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

[15] Gifu Univ, Gifu 5011193, Japan

[16] SOKENDAI Grad Univ Adv Studies, Hayama, Kanagawa 2400193, Japan

[17] Gyeongsang Natl Univ, Jinju 52828, South Korea

[18] Hanyang Univ, Dept Phys, Seoul 04763, South Korea

[19] Hanyang Univ, Inst Nat Sci, Seoul 04763, South Korea

[20] Univ Hawaii, Honolulu, HI 96822 USA

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

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

[23] Higher Sch Econ HSE, Moscow 101000, Russia

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

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

[26] Indian Inst Technol Bhubaneswar, Satya Nagar 751007, India

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

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

[29] Indiana Univ, Bloomington, IN 47408 USA

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

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

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

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

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

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

[36] J Stefan Inst, Ljubljana 1000, Slovenia

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

[38] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan

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

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

[41] Korea Inst Sci & Technol Informat, Daejeon 34141, South Korea

[42] Korea Univ, Seoul 02841, South Korea

[43] Kyoto Sangyo Univ, Kyoto 6038555, Japan

[44] Kyungpook Natl Univ, Daegu 41566, South Korea

[45] Univ Paris Saclay, CNRS, IN2P3, IJCLab, F-91405 Orsay, France

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

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

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

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

[50] Luther Coll, Decorah, IA 52101 USA

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 07期

基金：

欧盟地平线“2020”; 奥地利科学基金会; 美国国家科学基金会; 澳大利亚研究理事会; 新加坡国家研究基金会; 瑞士国家科学基金会; 欧洲研究理事会; 美国能源部;

关键词：

D O I：

10.1103/PhysRevD.105.072007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We measure the branching fractions and CP asymmetries for the decays B-0 -> (D) over bar (0)pi(0) and B+ -> (D) over bar (0)pi(+), using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. The branching fractions obtained and direct CP asymmetries are B(B-0 -> (D) over bar (0)pi(0)) = [2.70 +/- 0.06(stat) +/- 0.10(syst)] x 10(-4), B(B+ -> (D) over bar (0)pi+) = [4.53 +/- 0.02(stat) +/- 0.15(syst)] x 10(-3), A(CP)(B-0 -> (D) over bar (0)pi(0)) = [+/- 0.42 +/- 2.05(stat) +/- 1.22(syst)]%, and A(CP)((D) over bar (0)pi(+)) = [+0.19 +/- 0.36(stat) +/- 0.57(syst)]%. The measurements of B are the most precise to date and are in good agreement with previous results, as is the measurement of A(CP)((D) over bar (0)pi(+)). The measurement of A(CP) for B-0 -> (D) over bar (0)pi(0) is the first for this mode, and the value is consistent with Standard Model expectations.

引用

页数：13

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