[ital WZ] production at hadron colliders: Effects of nonstandard [ital WWZ] couplings and QCD corrections

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.51.3381· OSTI ID:6587853

Baur, U ^[1]; Han, T; Ohnemus, J ^[2]

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1. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States) Department of Physics, State University of New York at Buffalo, Buffalo, New York 14260 (United States)
2. Department of Physics, University of California, Davis, California 95616 (United States)

The process [ital pp][sup ([minus])][r arrow][ital W][sup [plus minus]][ital Z]+[ital X][r arrow][ital l][sub 1][sup [plus minus]][nu][sub 1][ital l][sub 2][sup +][ital l][sub 2][sup [minus]]+[ital X] is calculated to [ital O]([alpha][sub [ital s]]) for general [ital C]- and [ital P]- conserving [ital WWZ] couplings. At the Fermilab Tevatron center-of-mass energy, the QCD corrections to [ital WZ] production are modest. At CERN Large Hadron Collider (LHC) energies, the inclusive QCD corrections are large, but can be reduced significantly if a jet veto is imposed. The sensitivity limits for the anomalous [ital WWZ] couplings are derived from the next-to-leading order [ital Z] boson transverse momentum distribution for Tevatron and LHC energies. Unless a jet veto is imposed, [ital O]([alpha][sub [ital s]]) QCD corrections decrease the sensitivity to anomalous [ital WWZ] couplings considerably at LHC energies, but have little influence at the Tevatron. We also study, at next-to-leading order, rapidity correlations between the [ital W] and [ital Z] decay products, and the [ital ZZ]/[ital WZ] and [ital WZ]/[ital W][gamma] cross section ratios. These quantities are found to be useful tools in searching for the approximate zero present in the standard model [ital WZ] helicity amplitudes. The prospects for observing the approximate amplitude zero at the Tevatron and the LHC are critically assessed.

• DOE Contract Number: FG03-91ER40674; FG05-87ER40319
• OSTI ID: 6587853
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 51:7; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

662230 -- Quantum Chromodynamics-- (1992-)
662340* -- Hadron Interactions-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BARYON-BARYON INTERACTIONS
BOSONS
CERN
CHARGE CONSERVATION
CORRECTIONS
COUPLING
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
FERMILAB TEVATRON
FIELD THEORIES
HADRON-HADRON INTERACTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
INTERNATIONAL ORGANIZATIONS
INVARIANCE PRINCIPLES
LINEAR MOMENTUM
NUCLEON-ANTINUCLEON INTERACTIONS
P INVARIANCE
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PROTON-ANTIPROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
SENSITIVITY
SYNCHROTRONS
TRANSVERSE MOMENTUM
W MINUS BOSONS
W PLUS BOSONS
Z NEUTRAL BOSONS