PT Journal
AU Jung, M
   Li, XQ
   Pich, A
TI Exclusive radiative B-meson decays within the aligned two-Higgs-doublet model
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2012
BP 063
EP 33pp
VL 10
IS 10
DI 10.1007/JHEP10(2012)063
LA English
DE Higgs Physics; Beyond Standard Model; B-Physics; CP violation
AB In the aligned two-Higgs-doublet model, the alignment of Yukawa matrices in flavour space guarantees the absence of tree-level flavour-changing neutral currents, while allowing at the same time for new sources of CP violation, implying potentially large effects in many low-energy processes. In this work we study the constraints from exclusive radiative B -> V gamma decays, where V denotes a light vector meson. The current experimental data on the CP-averaged branching ratios and the direct CP and isospin asymmetries are analyzed. It is found that, while the branching ratios and direct CP asymmetries do not constrain the parameter space much further compared to the inclusive B -> X-s,X-d gamma decays, complementary constraints can be obtained from the isospin asymmetries Delta(K*gamma) and Delta(rho gamma). In addition, correlations between the various observables in exclusive B -> V gamma and inclusive B -> X-s,X-d gamma decays are investigated in detail, and predictions are made for several so far unmeasured observables.
ER