Threshold production of heavy top quarks: QCD and the Higgs boson

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.43.1500· OSTI ID:6202152

Strassler, M J; Peskin, M E ^[1]

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1. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (US)

We calculate the threshold cross section for {ital e}{sup +}{ital e{minus}}{r arrow}{ital t{bar t}} to leading-logarithmic order in QCD, using a nonrelativistic approximation suggested by Fadin and Khoze. We study the mass range 100{le}{ital m}{sub {ital t}}{le}250 GeV, and show that the cross section is an excellent measure of {alpha}{sub {ital s}} for the lower portion of the mass range, while for a heavier top quark it is sensitive to the mass and couplings of the Higgs boson. We argue that a precise determination of {ital m}{sub {ital t}} and a measurement of {Gamma}{sub {ital t}} are possible. We also show that nonperturbative effects are small, confirming that the {ital t{bar t}} threshold is a detailed perturbative test of the standard model.

• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6202152
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 43:5; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOUND STATE
COULOMB FIELD
CROSS SECTIONS
ELECTRIC FIELDS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY
FERMIONS
FIELD THEORIES
HIGGS BOSONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MASS SPECTRA
MATHEMATICAL MODELS
NUCLEAR POTENTIAL
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PERTURBATION THEORY
POSTULATED PARTICLES
POTENTIALS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SPECTRA
STANDARD MODEL
THRESHOLD ENERGY
TOP PARTICLES
UNIFIED GAUGE MODELS
YUKAWA POTENTIAL