CP violation, single lepton polarization asymmetry, and polarized CP asymmetry in B{yields}K{sup *}l{sup +}l{sup -} decay in the four-generation standard model

Journal Article · Wed Jul 01 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.015016· OSTI ID:21308553

Bashiry, V ^[1]; Shirkhanghah, N ^[2]; Zeynali, K ^[3]

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1. Engineering Faculty, Cyprus International University, Via Mersin 10 (Turkey)
2. Islamic Azad University, Khalkhal Branch, Valiasr Street, Khalkhal (Iran, Islamic Republic of)
3. Faculty of Physics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of)

In this paper we present a study of CP asymmetry, single lepton polarization asymmetry and polarized CP asymmetry in B{yields}K*l{sup +}l{sup -} decay within the four-generation standard model. Taking |V{sub t{sup '}}{sub s}*V{sub t{sup '}}{sub b}|=0.01, 0.02, 0.03 with phase {l_brace}60 deg. -120 deg.{r_brace}, which is consistent with the b{yields}sl{sup +}l{sup -} rate and the Bs mixing parameter {delta}m{sub Bs}, we find that CP asymmetry, single lepton polarization asymmetry and polarized CP asymmetry are sensitive to the existence of the fourth generation. This can serve as an indirect method to search for new physics effects, in particular, to search for the fourth-generation quarks(t{sup '},b{sup '}) via their indirect manifestations in loop diagrams.

• OSTI ID: 21308553
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B MESONS
CP INVARIANCE
KAONS
LEPTONS
MIXING
PARTICLE DECAY
POLARIZATION
QUARKS
STANDARD MODEL