Higgs-induced flavor-changing neutral current as a source of new physics in b{yields}s transitions

Journal Article · Mon Feb 01 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.035013· OSTI ID:21409208

Joshipura, Anjan S; Kodrani, Bhavik P ^[1]

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1. Physical Research Laboratory, Navarangpura, Ahmedabad 380 009 (India)

The experimental study of B mesons suggest the existence of some new physics contribution to the B{sub s}{sup 0}-B{sub s}{sup 0} mixing. We study the implications of a hypothesis that this contribution is generated by the Higgs-induced flavor-changing neutral currents (FCNC). We concentrate on the specific b{yields}s transition which is described by two complex FCNC parameters, F{sub 23} and F{sub 32}, and parameters in the Higgs sector. Model-independent constraints on these parameters are derived from the B{sub s}{sup 0}-B{sub s}{sup 0} mixing and are used to predict the branching ratios for B{sub s{yields}{mu}}{sup +{mu}-} and B{sub d{yields}}K{mu}{sup +{mu}-} numerically by considering general variations in the Higgs parameters assuming that Higgs sector conserves CP. Taking the results on B{sub s}{sup 0}-B{sub s}{sup 0} mixing derived by the global analysis of UTfit group as a guide we present the general constraints on F{sub 23}*F{sub 32} in terms of the pseudoscalar mass M{sub A}. The former is required to be in the range {approx}(1-5)x10{sup -11}M{sub A}{sup 2} GeV{sup -2} if the Higgs-induced FCNC represent the dominant source of new physics. The phases of these couplings can account for the large CP violating phase in the B{sub s}{sup 0}-B{sub s}{sup 0} mixing except when F{sub 23}=F{sub 32}. The Higgs contribution to B{sub s{yields}{mu}}{sup +{mu}-} branching ratio can be large, close to the present limit while it remains close to the standard model value in case of the process B{sub d{yields}}K{mu}{sup +{mu}-} for all the models under study. We identify and discuss various specific examples which can naturally lead to suppressed FCNC in the K{sup 0}-K{sup 0} mixing allowing at the same time the required values for F{sub 23}* and F{sub 32}.

• OSTI ID: 21409208
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevD.81.035013; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
B S MESONS
BRANCHING RATIO
COUPLING
CP INVARIANCE
FLAVOR MODEL
HIGGS BOSONS
HIGGS MODEL
KAONS NEUTRAL
MASS
MUONS MINUS
NEUTRAL CURRENTS
PARTICLE DECAY
STANDARD MODEL
ALGEBRAIC CURRENTS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
COMPOSITE MODELS
CURRENTS
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
HADRONS
INVARIANCE PRINCIPLES
KAONS
LEPTONS
MATHEMATICAL MODELS
MESONS
MUONS
PARTICLE MODELS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
QUARK MODEL
STRANGE MESONS
STRANGE PARTICLES
UNIFIED GAUGE MODELS