Large loop effects of extra supersymmetric Higgs doublets to CP violation in B{sup 0} mixing

Journal Article · Fri Oct 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.075001· OSTI ID:21432312

Kubo, Jisuke; Lenz, Alexander ^[1]

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1. Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192 (Japan)

We consider more than one pair of SU(2){sub L} doublet Higgs supermultiplets in a generic supersymmetric extension of the standard model, and calculate their one-loop contributions to the soft mass insertions {delta}{sub LL} etc. We find that, if large supersymmetry breaking in this sector is realized, the loop effects can give rise to large contributions to the soft mass insertions, meaning that they can generate large flavor-changing neutral currents and CP violations. We apply our result to a recently proposed model based on the discrete Q{sub 6} family group, and calculate the nondiagonal matrix element M{sub 12} of the neutral meson systems. We focus our attention on the extra phases {phi}{sub d,s}{sup {Delta}}in B{sub d,s} mixing and flavor-specific CP asymmetries a{sub sl}{sup d,s} in neutral B decays and obtain values that can be about 1 order of magnitude larger than the standard model predictions. Our final results are comparable with the recent experimental observations at D0 and CDF, but they are still about a factor of 5 smaller than the recently measured dimuon asymmetry from D0.

• OSTI ID: 21432312
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 7; Other Information: DOI: 10.1103/PhysRevD.82.075001; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B MESONS
B NEUTRAL MESONS
CP INVARIANCE
FERMILAB COLLIDER DETECTOR
FLAVOR MODEL
FORECASTING
HIGGS BOSONS
HIGGS MODEL
MASS
MATRIX ELEMENTS
NEUTRAL CURRENTS
PARTICLE DECAY
STANDARD MODEL
SU-2 GROUPS
SUPERMULTIPLETS
SUPERSYMMETRY
SYMMETRY BREAKING
ALGEBRAIC CURRENTS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
COMPOSITE MODELS
CURRENTS
DECAY
ELEMENTARY PARTICLES
FIELD THEORIES
GRAND UNIFIED THEORY
HADRONS
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MESONS
MULTIPLETS
PARTICLE MODELS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
QUARK MODEL
RADIATION DETECTORS
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
UNIFIED GAUGE MODELS