Can we measure the number of quark flavors without building an ultrahigh-energy accelerator
Journal Article
·
· Phys. Rev., D; (United States)
Phenomenological implications of the nonapplicability of the Appelquist-Carazzone ''decoupling'' theorem for spontaneously broken gauge theories are discussed. In particular, if the Higgs scalar particle indeed exists and is available in the laboratory, then one can in principle determine the total number of quark flavors N/sub F/ through measurements of (1) GAMMA (H ..-->.. ..gamma gamma..), the Higgs-particle partial decay rate into two photons, or (2) sigma (pp ..-->.. H + anything), the production cross section in p-p collisions, or (3) sigma (e/sup +/e/sup -/ ..-->.. He/sup +/e/sup -/), the production cross section in e/sup +/e/sup -/ collisions via two-photon-exchange processes. Otherwise the number N/sub F/ is inaccessible in the laboratory at finite energies.
- Research Organization:
- Department of Physics, Brandeis University, Waltham, Massachusetts 02154
- OSTI ID:
- 5783887
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 20:7; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645201* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
COMPOSITE MODELS
COUPLING CONSTANTS
CROSS SECTIONS
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXCHANGE INTERACTIONS
FIELD THEORIES
FLAVOR MODEL
HADRON-HADRON INTERACTIONS
HIGGS MODEL
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LIE GROUPS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTONS
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
SU GROUPS
SU-2 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS
WEINBERG-SALAM GAUGE MODEL
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
COMPOSITE MODELS
COUPLING CONSTANTS
CROSS SECTIONS
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXCHANGE INTERACTIONS
FIELD THEORIES
FLAVOR MODEL
HADRON-HADRON INTERACTIONS
HIGGS MODEL
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LIE GROUPS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTONS
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
SU GROUPS
SU-2 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS
WEINBERG-SALAM GAUGE MODEL