Decay and polarization properties of the top quark

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.1531· OSTI ID:7206081

Dalitz, R H ^[1]; Goldstein, G R ^[2]

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1. Department of Theoretical Physics, Oxford University, 1 Keble Road, Oxford OX1 3NP (United Kingdom)
2. Department of Physics, Tufts University, Medford, Massachusetts 02155 (United States)

Polarization and angular distributions in the decay sequence {ital t}{r arrow}{ital bW}{sup +},{ital W}{sup +}{r arrow}{ital l}{sup +}{nu}{sub {ital l}} are discussed for the standard model. Top quarks from {ital e}{sup +}{ital e{minus}}{r arrow}{ital t{bar t}} are predicted to have large polarization but, even if not, the parity-violating effects in this decay chain are large and will test closely the detailed spin structure of the electroweak interactions involving the top quark. A means of analyzing {ital {bar t}t} decays following {ital {bar t}t} production in hadronic interactions is developed, leading to an illuminating construction. Its application is illustrated by the analysis of the candidate for top-antitop pair creation in {ital {bar p}p} collisions found by the Collider Detector at Fermilab (CDF) at 1.8 TeV center-of-mass energy. If this is really {ital {bar t}t} production, then the top-quark mass would be 125{sub {minus}11}{sup +19} GeV/{ital c}{sup 2}.

• OSTI ID: 7206081
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:5; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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662210* -- Specific Theories & Interaction Models
662340 -- Hadron Interactions-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BOSONS
DISTRIBUTION
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
INVARIANCE PRINCIPLES
LEPTON-LEPTON INTERACTIONS
MASS
MATHEMATICAL MODELS
NUCLEON-ANTINUCLEON INTERACTIONS
P INVARIANCE
PAIR PRODUCTION
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE RAPIDITY
POLARIZATION
POSTULATED PARTICLES
PROTON-ANTIPROTON INTERACTIONS
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARKS
REST MASS
SPIN
STANDARD MODEL
TEV RANGE
TEV RANGE 01-10
TOP PARTICLES
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
W PLUS BOSONS
WEINBERG-SALAM GAUGE MODEL