Constraints on explicit CP violation from the Brookhaven muon g{minus}2 experiment

Journal Article · Sun Jul 01 04:00:00 EDT 2001 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.64.016010· OSTI ID:40204500

Ibrahim, Tarek; Chattopadhyay, Utpal; Nath, Pran

We use the recently derived CP phase dependent analytic results for the supersymmetric electroweak correction to g{sub {mu}}{minus}2 to constrain the explicit CP phases in softly broken supersymmetry using the new physics effect seen in the g{minus}2 Brookhaven measurement. It is shown that the BNL data strongly constrain the CP violating phase {theta}{sub {mu}} (the phase of the Higgs mixing parameter {mu}) and {xi}{sub 2} [the phase of the SU(2) gaugino mass {tilde m}{sub 2}] and as much as 60{endash}90% of the region in the {xi}{sub 2}{minus}{theta}{sub {mu}} plane is eliminated over a significant region of the MSSM parameter space by the BNL constraint. The region of CP phases not excluded by the BNL experiment allows for large phases and for a satisfaction of the EDM constraints via the cancellation mechanism. We find several models with large CP violation which satisfy the EDM constraint via the cancellation mechanism and produce an a{sub {mu}}{sup SUSY} consistent with the new physics signal seen by the Brookhaven experiment. The sparticle spectrum of these models lies within reach of the planned accelerator experiments.

• Sponsoring Organization: (US)
• OSTI ID: 40204500
• Journal Information: Physical Review D, Journal Name: Physical Review D Journal Issue: 1 Vol. 64; ISSN 0556-2821
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BNL
CANCELLATION
MUONS
PHYSICS
SPARTICLES
SUPERSYMMETRY