Direct CP violation in radiative b decays in and beyond the standard model
Journal Article
·
· Physical Review D
We consider the partial rate asymmetry in the inclusive decay modes b{yields}s{gamma} and b{yields}d{gamma}, concentrating on non-standard models with new charged Higgs interactions. We find that the charged Higgs contribution to the asymmetry for b{yields}s{gamma} is small in such models due to a universal cancellation mechanism. The asymmetry is therefore difficult to distinguish experimentally from the standard model (SM) value, which is also small. The cancellation mechanism is found to be rendered inoperative in supersymmetry due to the presence of chargino loops. Unlike b{yields}s{gamma}, the rate asymmetry for b{yields}d{gamma} in Higgs models can be quite different from its SM value, generally ranging from -20% to +20%. Specific model calculations are performed for the three-Higgs-doublet model and the ''top'' two-Higgs-doublet model to serve as illustrations. We also offer some suggestions that may be helpful to experimentalists in the detection of the inclusive mode b{yields}d{gamma}.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40205224
- Journal Information:
- Physical Review D, Journal Name: Physical Review D Journal Issue: 11 Vol. 62; ISSN 0556-2821
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
Similar Records
CP Violation in B{sub s} Mixing from Heavy Higgs Boson Exchange
General flavor blind minimal supersymmetric standard model and CP violation
Untagged bar B {yields} X{sub s+d} {gamma} CP asymmetry as a probe for new physics
Journal Article
·
Fri Jul 23 00:00:00 EDT 2010
· Physical Review Letters
·
OSTI ID:21410930
General flavor blind minimal supersymmetric standard model and CP violation
Journal Article
·
Mon Oct 01 00:00:00 EDT 2001
· Physical Review D
·
OSTI ID:40277419
Untagged bar B {yields} X{sub s+d} {gamma} CP asymmetry as a probe for new physics
Technical Report
·
Sun Jan 11 23:00:00 EST 2004
·
OSTI ID:826635