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Constraining supersymmetric models from B d - B d mixing and the B d → J / ψ K S asymmetry

Constraining supersymmetric models from B d - B d mixing and the B d → J / ψ K S asymmetry We analyze the chargino contributions to B d - B d mixing and CP asymmetry of the B d → J / ψ K S decay, in the framework of the mass insertion approximation. We derive model independent bounds on the relevant mass insertions. Moreover, we study these contributions in supersymmetric models with minimal flavor violation, Hermitian flavor structure, and small CP violating phases and universal strength Yukawa couplings. We show that, in supersymmetric models with large flavor mixing, the observed values of sin 2 β may be entirely due to the chargino–up-squark loops. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Constraining supersymmetric models from B d - B d mixing and the B d → J / ψ K S asymmetry

Gabrielli, E
Physical Review D , Volume 67 (1) – Jan 1, 2003
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12 pages

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References (3)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2003 The American Physical Society
ISSN
1089-4918
DOI
10.1103/PhysRevD.67.015008
Publisher site
See Article on Publisher Site

Abstract

We analyze the chargino contributions to B d - B d mixing and CP asymmetry of the B d → J / ψ K S decay, in the framework of the mass insertion approximation. We derive model independent bounds on the relevant mass insertions. Moreover, we study these contributions in supersymmetric models with minimal flavor violation, Hermitian flavor structure, and small CP violating phases and universal strength Yukawa couplings. We show that, in supersymmetric models with large flavor mixing, the observed values of sin 2 β may be entirely due to the chargino–up-squark loops.

Journal

Physical Review D – American Physical Society (APS)

Published: Jan 1, 2003

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