LEPTON DISTRIBUTION IN RARE B-DECAYS

Citation
Ds. Liu et R. Delbourgo, LEPTON DISTRIBUTION IN RARE B-DECAYS, Physical review. D. Particles and fields, 55(11), 1997, pp. 7044-7058
Citations number
43
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
05562821
Volume
55
Issue
11
Year of publication
1997
Pages
7044 - 7058
Database
ISI
SICI code
0556-2821(1997)55:11<7044:LDIRB>2.0.ZU;2-J
Abstract
We study lepton distributions in flavor-changing neutral current induc ed B meson decays into a pair of light leptons along with strange stat es. In addition to the invariant mass distribution, we examine the pol arization, forward-backward, and polarization forward-backward asymmet ries of the final state leptons. The standard model predictions for th ese distributions are at a level which is accessible to the Forthcomin g B Factories. We also investigate the consequence of extensions of th e standard model, including models with two Higgs doublets and supersy mmetric extensions. Substantial deviations in individual distributions are found in certain regions of the parameter space of specific model s. Therefore confronting these findings with future measurements may e ither highlight new physics or place constraints on extensions beyond the standard model. We derive results determined by the structure of t he effective Hamiltonian which is common to the standard model and oth er models, independently of the values of couplings which can vary fro m model to model.