Measurement of the branching fraction and CP asymmetry of B0 → π0π0 decays using 198 x 106 B(B)over-bar pairs in Belle II data

被引：4
作者：
Abudinen, F.
Adachi, I.
Adamczyk, K.
Aggarwal, L.
Ahmed, H.
Aihara, H.
Akopov, N.
Aloisio, A.
Ky, N. Anh
Asner, D. M.
Atmacan, H.
Aushev, T.
Aushev, V.
Bae, H.
Bahinipati, S.
Bambade, P.
Banerjee, Sw.
Bansal, S.
Barrett, M.
Baudot, J.
Bauer, M.
Baur, A.
Beaubien, A.
Becker, J.
Behera, P. K.
Bennett, J., V
Bernieri, E.
Bernlochner, F. U.
Bertacchi, V.
Bertemes, M.
Bertholet, E.
Bessner, M.
Bettarini, S.
Bhardwaj, V.
Bhuyan, B.
Bianchi, F.
Bilka, T.
Bilokin, S.
Biswas, D.
Bodrov, D.
Bolz, A.
Borah, J.
Bozek, A.
Bracko, M.
Branchini, P.
Briere, R. A.
Browder, T. E.
Budano, A.
Bussino, S.
Campajola, M.
机构：
来源：
PHYSICAL REVIEW D | 2023年 / 107卷 / 11期
基金：
美国国家科学基金会;
关键词：
PI-PI; QCD FACTORIZATION; ISOSPIN ANALYSIS; PUZZLE; VIOLATION; PHASES;
D O I：
10.1103/PhysRevD.107.112009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report measurements of the branching fraction and CP asymmetry in B-0 -> pi(0)pi(0) decays reconstructed at Belle II in an electron-positron collision sample containing 198 x 10(6) BB pairs. We measure a branching fraction B(B-0 -> pi(0)pi(0)) = (1.38 +/- 0.27 +/- 0.22) x 10(-6) and a CP asymmetry A(CP)(B-0 -> pi(0)pi(0)) = 0.14 +/- 0.46 +/- 0.07, where the first uncertainty is statistical and the second is systematic.
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页数：10
相关论文
共 43 条
[11]   QCD factorization for B→PP and B→PV decays [J].
Beneke, M ;
Neubert, M .
NUCLEAR PHYSICS B, 2003, 675 (1-2) :333-415
[12]   QCD factorization for B → ππ decays:: Strong phases and CP violation in the heavy quark [J].
Beneke, M ;
Buchalla, G ;
Neubert, M ;
Sachrajda, CT .
PHYSICAL REVIEW LETTERS, 1999, 83 (10) :1914-1917
[13]   STATISTICAL MODEL FOR ELECTRON-POSITRON ANNIHILATION INTO HADRONS [J].
BJORKEN, JD ;
BRODSKY, SJ .
PHYSICAL REVIEW D, 1970, 1 (05) :1416-&
[14]   Measurement of the branching fraction and CP asymmetry for B → (D)over-bar0π decays [J].
Bloomfield, T. ;
Sevior, M. E. ;
Adachi, I. ;
Aihara, H. ;
Al Said, S. ;
Asner, D. M. ;
Aulchenko, V. ;
Aushev, T. ;
Ayad, R. ;
Babu, V. ;
Bahinipati, S. ;
Behera, P. ;
Bennett, J. ;
Bessner, M. ;
Bilka, T. ;
Biswal, J. ;
Bobrov, A. ;
Bonvicini, G. ;
Bozek, A. ;
Bracko, M. ;
Browder, T. E. ;
Campajola, M. ;
Cao, L. ;
Cervenkov, D. ;
Chang, M. -C ;
Chekelian, V. ;
Chen, A. ;
Cheon, B. G. ;
Chilikin, K. ;
Cho, H. E. ;
Cho, K. ;
Cho, S. -J. ;
Choi, S. -K. ;
Choi, Y. ;
Choudhury, S. ;
Cinabro, D. ;
Cunliffe, S. ;
Das, S. ;
Dash, N. ;
De Nardo, G. ;
Dhamija, R. ;
Di Capua, F. ;
Dolezal, Z. ;
V. Dong, T. ;
Dubey, S. ;
Eidelman, S. ;
Epifanov, D. ;
Ferber, T. ;
Ferlewicz, D. ;
Fulsom, B. G. .
PHYSICAL REVIEW D, 2022, 105 (07)
[15]   Isospin analysis of charmless B-meson decays [J].
Charles, J. ;
Deschamps, O. ;
Descotes-Genon, S. ;
Niess, V. .
EUROPEAN PHYSICAL JOURNAL C, 2017, 77 (08)
[16]   Determining weak phases from the B→ππ, Kπ decays -: art. no. 014036 [J].
Charng, YY ;
Li, HN .
PHYSICAL REVIEW D, 2005, 71 (01) :014036-1
[17]   Weak phases from topological-amplitude parametrization [J].
Charng, YY ;
Li, HN .
PHYSICS LETTERS B, 2004, 594 (1-2) :185-195
[18]   Updating B → PP,VP decays in the framework of flavor symmetry [J].
Cheng, Hai-Yang ;
Chiang, Cheng-Wei ;
Kuo, An-Li .
PHYSICAL REVIEW D, 2015, 91 (01)
[19]   Measurement of the B+/B0 production ratio in e+e- collisions at the γ(4S) resonance using B → J/ψ(ll)K decays at Belle [J].
Choudhury, S. ;
Sandilya, S. ;
Trabelsi, K. ;
Giri, A. ;
Adachi, I. ;
Aihara, H. ;
Asner, D. M. ;
Atmacan, H. ;
Aushev, T. ;
Ayad, R. ;
Babu, V. ;
Bahinipati, S. ;
Behera, P. ;
Belous, K. ;
Bennett, J. ;
Bessner, M. ;
Bhardwaj, V. ;
Bhuyan, B. ;
Bilka, T. ;
Bodrov, D. ;
Bonvicini, G. ;
Borah, J. ;
Bozek, A. ;
Bracko, M. ;
Branchini, P. ;
Browder, T. E. ;
Budano, A. ;
Campajola, M. ;
Cervenkov, D. ;
Chang, M. -C. ;
Chen, C. ;
Cheon, B. G. ;
Chilikin, K. ;
Cho, H. E. ;
Cho, K. ;
Cho, S. -J. ;
Choi, S. -K. ;
Choi, Y. ;
Cinabro, D. ;
Das, S. ;
De Pietro, G. ;
Di Capua, F. ;
Dingfelder, J. ;
Dolezal, Z. ;
Dong, T. V. ;
Epifanov, D. ;
Ferlewicz, D. ;
Fulsom, B. G. ;
Garg, R. ;
Gaur, V. .
PHYSICAL REVIEW D, 2023, 107 (03)
[20]   QUANTUM CHROMODYNAMICS TEST FOR JETS [J].
FARHI, E .
PHYSICAL REVIEW LETTERS, 1977, 39 (25) :1587-1588
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