New physics in b → sμ+μ: CP-conserving observables

Alok, Ashutosh Kumar ; Datta, Alakabha ; Dighe, Amol ; Duraisamy, Murugeswaran ; Ghosh, Diptimoy ; London, David (2011) New physics in b → sμ+μ: CP-conserving observables Journal of High Energy Physics, 2011 . p. 121. ISSN 1126-6708

Full text not available from this repository.

Official URL:

Related URL:


We perform a comprehensive study of the impact of new-physics operators with different Lorentz structures on decays involving the b → sμ+μ transition. We examine the effects of new vector-axial vector (VA), scalar-pseudoscalar (SP) “‘ and tensor (T) interactions on the differential branching ratios and forward-backward asymmetries (AFB’s) of B̅0s→μ+μ,B̅ 0d→Xsμ+μ,B̅ 0s→μ+μγ,B̅ 0d→K̅μ+μ, and B̅ 0d→K̅∗μ+μ, taking the new-physics couplings to be real. In B̅ 0d→K̅∗μ+μ, we further explore the polarization fraction fL, the angular asymmetry A(2)T, and the longitudinal- transverse asymmetry ALT. We identify the Lorentz structures that would significantly impact these observables, providing analytical arguments in terms of the contributions from the individual operators and their interference terms. In particular, we show that while the new VA operators can significantly enhance most of the asymmetries beyond the Standard Model predictions, the SP and T operators can do this only for AFB in B̅ 0d→K̅μ+μ.

Item Type:Article
Source:Copyright of this article belongs to Springer Verlag.
Keywords:Beyond Standard Model; B-Physics
ID Code:101097
Deposited On:09 Mar 2018 10:23
Last Modified:09 Mar 2018 10:23

Repository Staff Only: item control page