Elusive {ital Z}{sup {prime}} coupled to quarks of third generation

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.5820· OSTI ID:388948

Frampton, P H ^[1]; Wise, M B ^[2]; Wright, B D ^[1]

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1. University of North Carolina, Chapel Hill, North Carolina 27599-3255 (United States)
2. California Institute of Technology, Pasadena, California 91125 (United States)

By extending the standard gauge group to SU(3){sub {ital c}}{times}SU(2){sub {ital L}}{times}U(1){sub {ital Y}}{times}U(1){sub {ital X}} with {ital X} charges carried only by the third family we accommodate the CERN LEP measurement of {ital R}{sub {ital b}} and predict a potentially measurable discrepancy in {ital A}{sub FB}{sup {ital b}} in {ital e}{sup +}{ital e}{sup {minus}} scattering and that {ital D}{sup 0}{ital {bar D}}{sup 0} mixing may be near its experimental limit. The uniqueness of our model is that the {ital Z}{sup {prime}} couplings are generation-dependent and, hence, explicitly violate the GIM mechanism, but can nevertheless be naturally consistent with FCNC constraints. Direct detection of this {ital Z}{sup {prime}} is possible but challenging. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: California Institute of Technology
• DOE Contract Number: FG03-92ER40701; FG05-85ER40219
• OSTI ID: 388948
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANTI-D NEUTRAL MESONS
COUPLING
D NEUTRAL MESONS
ELECTRON-POSITRON INTERACTIONS
HIGGS MODEL
LIMITING VALUES
MIXING
RADIATIVE CORRECTIONS
STANDARD MODEL
SU-2 GROUPS
SU-3 GROUPS
SUPERSYMMETRY
U-1 GROUPS
WEAK HADRONIC DECAY
Z NEUTRAL BOSONS