Lepton-pair production in proton-nucleon collisions as a means of testing the standard electroweak model

Journal Article · Sun Jan 01 00:00:00 EST 1989 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.39.209· OSTI ID:6553978

Hwang, W P; Garvey, G T; Moss, J M; Peng, J C

We use the standard Glashow-Salam-Weinberg SU(2)/sub L/ x U(1) electroweak theory to calculate the charge asymmetry expected for lepton-pair production in proton-nucleon collisions at various center-of-mass energies. Specifically, we discuss the prospect of measuring charge asymmetry as a means to determine the electroweak mixing parameter sin/sup 2/theta/sub W/, using a proton-beam energy of around 800 GeV. As motivated by the observation that an additional (nonstandard) gauge boson in a low-energy theory appears naturally in the E/sub 8/ x E/sub 8/ superstring studies, we also adopt an extended SU(2)/sub L/ x U(1) x U(1) electroweak model. To study manifestations of the nonstandard gauge boson, we consider a fixed-target experiment at a few TeV as well as for a proton-antiproton or proton-proton collider experiment in the few-TeV range. In particular, the behavior of charge asymmetry near the standard Z/sup 0/ pole is investigated as a possible means to determine the Z/sup 0/-Z'/sup 0/ mixing parameter sinphi. The possibility of a direct search for the nonstandard gauge boson Z'/sup 0/ at Fermilab Tevatron energies is also briefly discussed.

• Research Organization: Department of Physics, National Taiwan University, Taipei, Taiwan 10764, Republic of China
• OSTI ID: 6553978
• Journal Information: Phys. Rev. D; (United States), Vol. 39:1
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
LEPTONS
PAIR PRODUCTION
PROTON-NUCLEON INTERACTIONS
WEINBERG-SALAM GAUGE MODEL
ANNIHILATION
ASYMMETRY
CENTER-OF-MASS SYSTEM
CHARGE DISTRIBUTION
CROSS SECTIONS
DRELL MODEL
FEYNMAN DIAGRAM
SU-2 GROUPS
TEV RANGE
U-1 GROUPS
Z NEUTRAL BOSONS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSONS
DIAGRAMS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LIE GROUPS
MATHEMATICAL MODELS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
SU GROUPS
SYMMETRY GROUPS
U GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
645202* - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties
645203 - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties