Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Impact of Z ` and universal extra dimension parameters on different asymmetries in B-s ->phi l(+)l(-) decays

Full text
Ahmed, Ishtiaq [1, 2] ; Aslam, M. Jamil [1, 2] ; Paracha, M. Ali [3, 4]
Total Authors: 3
[1] Natl Ctr Phys, Islamabad 45320 - Pakistan
[2] Quaid I Azam Univ, Dept Phys, Islamabad 45320 - Pakistan
[3] Univ Cruzeiro Sul, Lab Fis Teor & Computacao Cient, BR-01506000 Sao Paulo - Brazil
[4] Natl Univ Sci & Technol, Ctr Adv Math & Phys, Islamabad 44000 - Pakistan
Total Affiliations: 4
Document type: Journal article
Source: Physical Review D; v. 88, n. 1 JUL 15 2013.
Web of Science Citations: 4

comprehensive study of the impact of new physics on different observables for B-s ->phi l(+)l(-)is carried out. We examine the new physics models, such as Z' and universal extra dimension models, where the effects of new physics come through the modification of Wilson coefficients. We analyze these effects through the theoretical prediction of the branching ratio, the forward-backward asymmetry, lepton polarization asymmetries, and the helicity fractions of the final-state meson. These observables will definitely be measured in present and future colliders with great precision. We also point out that hadronic uncertainties in various physical observables are small, which make them an ideal probe to establish new physics. Therefore, the measurements of these observables for the same decay would permit the detection of physics beyond the Standard Model and will also help us to distinguish between different new physics scenarios. (AU)

FAPESP's process: 12/13047-2 - Physics beyond the standard model and nonperturbative aspects in rare semi-leptonic b decays
Grantee:Muhammad Ali Paracha
Support type: Scholarships in Brazil - Post-Doctorate