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Dipole coefficients in B→Xsγ in supersymmetry with large tanβ and explicit CP violation
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10.1016:S0370-2693(02)01348-5.pdf
Date
2002-4
Author
Boz, Müge
Pak, Namık K.
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We perform a detailed study of the electric and chromoelectric dipole coefficients in B --> X(s)gamma decay in a supersymmetric scheme with explicit CP violation. In our analysis, we adopt the minimal flavor violation scheme by taking into account the tan beta-enhanced large contributions beyond the leading order. We show that the coefficients can deviate from the SM prediction significantly in both real and imaginary directions. Experimental bounds still allow for large deviations from the SM predictions for both dipole coefficients such that the CP asymmetry is as large as +/-8%. There are further implications of these coefficients for the charmless hadronic and semileptonic B decays. As a direct application of our analysis, we have discussed Lambda(b) --> A(gamma) decay.
Subject Keywords
Nuclear and High Energy Physics
,
Supersymmetry
,
B -> X-s gamma decay
,
Electric and chromoelectric dipole coefficients
,
Explicit CP violation
URI
https://hdl.handle.net/11511/51748
Journal
Physics Letters B
DOI
https://doi.org/10.1016/s0370-2693(02)01348-5
Collections
Department of Physics, Article