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Fourth-generation standard model imprints in B → K * ℓ + ℓ - decays with polarized K *

Fourth-generation standard model imprints in B → K * ℓ + ℓ - decays with polarized K * The implication of the fourth-generation quarks in the B → K * ℓ + ℓ - ( ℓ = μ , τ ) decays when K * meson is longitudinally or transversely polarized is presented herein. In this context, the dependence of the branching ratio with polarized K * and the helicity fractions ( f L , T ) of K * meson were studied. It was observed that the polarized branching ratios as well as helicity fractions are sensitive to the new physics (NP) parameters, especially when the final-state leptons are tauons. Hence, the measurements of these observables at LHC can serve as a good tool to investigate the indirect searches of new physics beyond the standard model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Fourth-generation standard model imprints in B → K * ℓ + ℓ - decays with polarized K *

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References (62)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2012 The American Physical Society
ISSN
1550-2368
DOI
10.1103/PhysRevD.85.034018
Publisher site
See Article on Publisher Site

Abstract

The implication of the fourth-generation quarks in the B → K * ℓ + ℓ - ( ℓ = μ , τ ) decays when K * meson is longitudinally or transversely polarized is presented herein. In this context, the dependence of the branching ratio with polarized K * and the helicity fractions ( f L , T ) of K * meson were studied. It was observed that the polarized branching ratios as well as helicity fractions are sensitive to the new physics (NP) parameters, especially when the final-state leptons are tauons. Hence, the measurements of these observables at LHC can serve as a good tool to investigate the indirect searches of new physics beyond the standard model.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Feb 1, 2012

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