Like-sign dimuon charge asymmetry in the Randall-Sundrum model
- Department of Physics and Astronomy, 108 Lewis Hall, University of Mississippi, Oxford, Mississippi 38677-1848 (United States)
We confirm that in order to account for the recent D0 result of large like-sign dimuon charge asymmetry, a considerable large new physics effect in {Gamma}{sub 12}{sup s} is required in addition to a large CP violating phase in B{sub s}-B{sub s} mixing. In the Randall-Sundrum model of warped geometry, where the fermion fields reside in the bulk, new sources of flavor and CP violation are obtained. We analyze the like-sign dimuon asymmetry in this class of model as an example of the desired new physics. We show that the wrong-charge asymmetry, a{sub sl}{sup s}, which is related to the dimuon asymmetry, is significantly altered compared to the standard model value. However, experimental limits from {Delta}M{sub s}, {Delta}{Gamma}{sub s} as well as K mixing and electroweak corrections constrain it to be greater than a {sigma} away from its experimental average value. This model cannot fully account for the D0 anomaly due to its inability to generate a sufficient new contribution to the width difference {Gamma}{sub 12}{sup s}, even though the model can generate large contribution to the mass difference M{sub 12}{sup s}.
- OSTI ID:
- 21541621
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 83, Issue 9; Other Information: DOI: 10.1103/PhysRevD.83.094501; (c) 2011 American Institute of Physics; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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ASYMMETRY
B S MESONS
CP INVARIANCE
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FLAVOR MODEL
MASS DIFFERENCE
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STANDARD MODEL
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
FIELD THEORIES
GRAND UNIFIED THEORY
HADRONS
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
QUARK MODEL
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STRANGE PARTICLES
UNIFIED GAUGE MODELS