Neutral-current constraint and gauge models. [Cross sections, quark model, SU(2)XU(1) guage models]

Journal Article · Fri Dec 31 23:00:00 EST 1976 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.15.89· OSTI ID:7233759

Hagiwara, T; Takasugi, E

The experimental observation R/sup nu-bar//R/sup ..nu../ < sigma/sup ..nu..//sub cc//sigma/sub cc//sup nu-bar/, i.e., sigma/sup ..nu..//sub nc/ > sigma/sub nc//sup nu-bar/, where sigma/sub cc,//sup ..nu..//sup( nu-bar)/ are the ..nu..- (nu-bar-) induced charge- and neutral-current inclusive cross sections on an isospin-0 nucleon and R/sup ..nu..//sup( nu-bar)/ = sigma/sub nc//sup ..nu..//sup( nu-bar)//sigma/sub cc//sup ..nu..//sup( nu-bar)/, provides a constraint on the possible quark representations among various SU(2) x U(1) gauge models. We have examined the energy dependence of both ..nu..- (nu-bar-) induced charged- and neutral-current processes in the models which respect the constraint. Some of the models contain one or a few heavy quarks with an exotic charge of Q = 5/3 and/or -4/3. (AIP)

• Research Organization: The Rockefeller University, New York, New York 10021
• OSTI ID: 7233759
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 15:1; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645302* -- High Energy Physics-- Particle Invariance Principles &amp; Symmetries-- Applications to Electromagnetic &amp; Weak Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
ANTINEUTRINO-NUCLEON INTERACTIONS
AXIAL-VECTOR CURRENTS
CHARGED-CURRENT INTERACTIONS
COMPOSITE MODELS
COUPLING CONSTANTS
CROSS SECTIONS
CURRENTS
ENERGY DEPENDENCE
GAUGE INVARIANCE
INCLUSIVE INTERACTIONS
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LIE GROUPS
MATHEMATICAL MODELS
NEUTRAL-CURRENT INTERACTIONS
NEUTRINO-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
QUARK MODEL
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS