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Sun, JF; Chang, Q; Hu, XH; Yang, YL; Chang, Q (reprint author), Henan Normal Univ, Inst Particle & Nucl Phys, Xinxiang 453007, Peoples R China.
Constraints on hard spectator scattering and annihilation corrections in decays within QCD factorization
Source PublicationPHYSICS LETTERS B
Language英语
AbstractIn this paper, we investigate the contributions of hard spectator scattering and annihilation in B -> PV decays within the QCD factorization framework. With available experimental data on B -> pi K*, rho K, pi rho and K phi decays, comprehensive chi(2) analyses of the parameters X-A,H(i,f)(rho(i,f)(A,H), phi(i,f)(A,H)) are performed, where X-A(f)(X-A(i)) and X-H are used to parameterize the endpoint divergences of the (non) factorizable annihilation and hard spectator scattering amplitudes, respectively. Based on chi(2) analyses, it is observed that (1) The topology-dependent parameterization scheme is feasible for B -> PV decays; (2) At the current accuracy of experimental measurements and theoretical evaluations, X-H = X-A(i) is allowed by B -> PV decays, but X-H not equal X-A(f) at 68% C.L.; (3) With the simplification X-H = X-A(i), parameters X-A(f) and X-A(i) should be treated individually. The above-described findings are very similar to those obtained from B -> PP decays. Numerically, for B -> PV decays, we obtain (rho(i)(A,H), phi(i)(A,H)[degrees]) = (2.87(-1.95)(+0.66), -145(-21)(+14)) and (rho(f)(A), phi(f)(A)[degrees]) = (0.91(-0.13)(+0.12), -37(-9)(+10)) at 68% C.L. With the best-fit values, most of the theoretical results are in good agreement with the experimental data within errors. However, significant corrections to the color-suppressed tree amplitude alpha(2) related to a large rho H result in the wrong sign for A(CP)(dir)(B- -> pi K-0*(-)) compared with the most recent BABAR data, which presents a new obstacle in solving "pi pi" and "pi K" puzzles through alpha(2). A crosscheck with measurements at Belle (or Belle II) and LHCb, which offer higher precision, is urgently expected to confirm or refute such possible mismatch. (C) 2015 The Authors. Published by Elsevier B.V.
2015
Volume743Issue:0Pages:444-450
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1016/j.physletb.2015.03.001
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11475055, 11105043, 11147008, 11275057, U1232101] ; National Natural Science Foundation of China [11475055, 11105043, 11147008, 11275057, U1232101] ; National Natural Science Foundation of China [11475055, 11105043, 11147008, 11275057, U1232101] ; National Natural Science Foundation of China [11475055, 11105043, 11147008, 11275057, U1232101] ; Foundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of China [201317] ; Foundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of China [201317] ; Foundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of China [201317] ; Foundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of China [201317] ; Program for Science and Technology Innovation Talents in Universities of Henan Province [14HASTIT036] ; Program for Science and Technology Innovation Talents in Universities of Henan Province [14HASTIT036] ; Program for Science and Technology Innovation Talents in Universities of Henan Province [14HASTIT036] ; Program for Science and Technology Innovation Talents in Universities of Henan Province [14HASTIT036]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21032
Collection理论物理所科研产出_SCI论文
Corresponding AuthorChang, Q (reprint author), Henan Normal Univ, Inst Particle & Nucl Phys, Xinxiang 453007, Peoples R China.
Recommended Citation
GB/T 7714
Sun, JF,Chang, Q,Hu, XH,et al. Constraints on hard spectator scattering and annihilation corrections in decays within QCD factorization[J]. PHYSICS LETTERS B,2015,743(0):444-450.
APA Sun, JF,Chang, Q,Hu, XH,Yang, YL,&Chang, Q .(2015).Constraints on hard spectator scattering and annihilation corrections in decays within QCD factorization.PHYSICS LETTERS B,743(0),444-450.
MLA Sun, JF,et al."Constraints on hard spectator scattering and annihilation corrections in decays within QCD factorization".PHYSICS LETTERS B 743.0(2015):444-450.
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