b-quark electric dipole moment in supersymmetry and CP-odd bottomonium formation

Journal Article · Fri Jun 01 04:00:00 EDT 2001 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.63.115011· OSTI ID:40205143

Demir, D A; Voloshin, M B

We compute the electric dipole moment (EDM) of the bottom quark in the minimal supersymmetric (SUSY) model with explicit CP violation. We estimate its upper bound to be 10{sup -20} ecm where the dominant contribution comes from the charginos for most of the SUSY parameter space. We also find that the chargino contribution is directly correlated with the branching fraction of the B{yields}X{sub s}{gamma} decay. Furthermore, we analyze the formation of the {sup 1}P{sub 1} resonance of the ({bar B}b) system in e{sup +}e{sup -} annihilation, and show that the CP-violating transition amplitude, induced solely by the b-quark EDM, is significantly larger than the CP-conserving ones. Therefore, observation of this CP-odd resonance in e{sup +}e{sup -} annihilation would be a direct probe of the CP-violating phases in SUSY. In case the experiment cannot establish the existence of such a CP-odd ({bar B}b) state, then either the sparticle masses of all three generations will be pushed well above TeV, weakening the possibility of weak-scale SUSY, or the sparticle mass spectrum will be tuned so as to cancel different contributions to EDMs.

• Sponsoring Organization: (US)
• OSTI ID: 40205143
• Journal Information: Physical Review D, Journal Name: Physical Review D Journal Issue: 11 Vol. 63; ISSN 0556-2821
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANNIHILATION
BOTTOMONIUM
DECAY
ELECTRIC DIPOLE MOMENTS
PROBES
QUARKS
RESONANCE
SPARTICLES
SUPERSYMMETRY
TRANSITION AMPLITUDES