بررسی واپاشی -B→ρl+l در مدل استاندارد با نسل چهارم کوارک

زینالی, کاظم and بشیری, ولی (1387) بررسی واپاشی -B→ρl+l در مدل استاندارد با نسل چهارم کوارک. Physical Review D ــ 78 (3). 033001-1. شاپا ISSN 1550-7998

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Official URL: http://prd.aps.org/vtoc/PRD/v78


Exclusive B→ρl+l- decay in the standard model with fourth-generation quarks

English Abstract

We investigate the influence of the fourth generation of quarks on the branching ratio, the CP asymmetry, and the polarization asymmetries in B→ρℓ+ℓ- decay. Taking |Vt′dVt′b|∼0.001 with phase about 10°, which is consistent with the sin⁡2ϕ1 of the Cabibbo-Kobayashi-Maskawa matrix and the Bd mixing parameter ΔmBd, we obtain that for both (μ,τ) channels the branching ratio is increased and the magnitude of CP asymmetry and polarization asymmetries decreased by the mass and mixing parameters of the 4th generation of quarks. These results can serve as a good tool to search for new physics effects, precisely, to search for the fourth generation of quarks (t′,b′) via its indirect manifestations in loop diagrams.

Item Type:Article
زبان سند : انگلیسی
نویسنده مسئول :کاظم زینالی
نویسنده :ولی بشیری
Additional Information:Impact Factor: 5.050 Abstracting/Indexing Includes: 1-ISI 2-Chemical Abstracts, Scopus 3-Computer & Control Abstracts, Current Physics Index, Electrical & Electronics Index, Energy Research Abstracts, INSPEC, International Aerospace Abstracts, Mathematical Reviews, Nuclear Science Abstracts, Physics Abstracts, SPIN.
Subjects:WN Radiology . Diagnostic Imaging
ID Code:1166
Deposited By: MS Soghra Golmaghani
Deposited On:27 Dec 1388 09:40
Last Modified:17 Nov 1391 10:41

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