Supersymmetric QCD flavor-changing top quark decay

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.4213· OSTI ID:542766

Couture, G; Koenig, H ^[1]; Frank, M; Koenig, H ^[2]

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1. Departement de Physique, Universite du Quebec a Montreal, C.P. 8888, Succ. Centre Ville, Montreal, Quebec, H3C 3P8 (CANADA)
2. Department of Physics, Concordia University, 1455 De Maisonneuve Blvd. W., Montreal, Quebec, H3G 1M8 (CANADA)

We present a detailed and complete calculation of the gluino and scalar quarks contribution to the flavor-changing top quark decay into a charm quark and a photon, gluon, or a Z{sup 0} boson within the minimal supersymmetric standard model including flavor-changing gluino-quark-scalar-quark couplings in the right-handed sector. We compare the results with the ones presented in an earlier paper where we considered flavor-changing couplings only in the left-handed sector. We show that these new couplings have important consequences leading to a large enhancement when the mixing of the scalar partners of the left- and right-handed top quark is included. Furthermore CP violation in the flavor-changing top quark decay will occur when a SUSY phase is taken into account. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 542766
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 7 Vol. 56; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
C QUARKS
COUPLING
CP INVARIANCE
FLAVOR
GLUONS
PHOTONS
QUANTUM CHROMODYNAMICS
RADIATIVE DECAY
STANDARD MODEL
SUPERSYMMETRY
T QUARKS
VIOLATIONS
WEAK HADRONIC DECAY
Z NEUTRAL BOSONS