TY - JOUR
T1 - Annihilation-type charmless radiative decays of B meson in non-universal Z′ model
AU - Hua, Juan
AU - Kim, C. S.
AU - Li, Ying
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - We study charmless pure annihilation type radiative B decays within the QCD factorization approach. After adding the vertex corrections to the naive factorization approach, we find that the branching ratios of B̄d0 → φγ, B̄s0 → ρ0γ, B̄s0 → ωγ within the standard model are at the order of O(10-12), O(10-10), and O(10-11)respectively. The smallness of these decays in the standard model makes them sensitive probes of flavor physics beyond the standard model. To explore their physics potential, we have estimated the contribution of Z′ boson in the decays. Within the allowed parameter space, the branching ratios of these decay modes can be enhanced remarkably in the non-universal Z′ model: The branching ratios can reach to O(10-8) for B̄s0 → ρ0(ω)γ and O(10-10) for the B̄d0 → φγ, which are large enough for LHC-b and/or Super B-factories to detect those channels in near future. Moreover, we also predict large CP asymmetries in suitable parameter space. The observation of these modes could in turn help us to constrain the Z′ mass within the model.
AB - We study charmless pure annihilation type radiative B decays within the QCD factorization approach. After adding the vertex corrections to the naive factorization approach, we find that the branching ratios of B̄d0 → φγ, B̄s0 → ρ0γ, B̄s0 → ωγ within the standard model are at the order of O(10-12), O(10-10), and O(10-11)respectively. The smallness of these decays in the standard model makes them sensitive probes of flavor physics beyond the standard model. To explore their physics potential, we have estimated the contribution of Z′ boson in the decays. Within the allowed parameter space, the branching ratios of these decay modes can be enhanced remarkably in the non-universal Z′ model: The branching ratios can reach to O(10-8) for B̄s0 → ρ0(ω)γ and O(10-10) for the B̄d0 → φγ, which are large enough for LHC-b and/or Super B-factories to detect those channels in near future. Moreover, we also predict large CP asymmetries in suitable parameter space. The observation of these modes could in turn help us to constrain the Z′ mass within the model.
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U2 - 10.1140/epjc/s10052-010-1395-2
DO - 10.1140/epjc/s10052-010-1395-2
M3 - Article
AN - SCOPUS:77956677069
VL - 69
SP - 139
EP - 146
JO - European Physical Journal C
JF - European Physical Journal C
SN - 1434-6044
IS - 1
ER -