Multiple-photon effects in asymmetries:. mu. mu. vs b b

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.42.1404· OSTI ID:6233258

Jadach, S ^[1]; Ward, B F.L. ^[2]

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1. CERN, Geneva 23 (Switzerland) Institute of Physics, Jagellonian University, Krakow, Poland
2. CERN, Geneva (Switzerland) SLAC, Stanford University, Stanford, CA (USA) Department of Physics and Astronomy, University of Tennessee, Knoxville, TN (USA)

We present an analysis of the effects of multiple-photon emission, in the context of {ital Z}{sup 0} physics at the SLAC Linear Collider and the CERN {ital e}{sup +}{ital e}{sup {minus}} collider LEP, on the forward-backward, left-right, and polarized forward-backward asymmetries for {ital e}{sup +}{ital e}{sup {minus}}{r arrow}{mu}{sup +}{mu}{sup {minus}}+{ital n}({gamma}) and {ital e}{sup +}{ital e}{sup {minus}}{r arrow}{ital b{bar b}}+{ital n}({gamma}). We focus on this {ital Z}{sup 0}-physics scenario in the presence of detector cuts. Realistic calculations are carried out with our Monte Carlo--based Yennie-Frautschi-Suura event-by-event approach to SU{sub 2{ital L}}{times}U{sub 1} radiative corrections at high energies. We conclude that the multiple-photon effects should be taken into account for high-precision {ital Z}{sup 0} physics. We find further that, for high-luminosity unpolarized {ital Z}{sup 0} physics, the {ital b{bar b}}+{ital n}({gamma}) final state looks much more promising as a way to measure the respective forward-backward asymmetry when it is compared to {mu}{sup +}{mu}{sup {minus}}+{ital n}({gamma}) insofar as radiative corrections are concerned.

• DOE Contract Number: AS05-76ER03956; AC03-76SF00515
• OSTI ID: 6233258
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 42:5; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATOR FACILITIES
ACCELERATORS
ANGULAR DISTRIBUTION
ASYMMETRY
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
CORRECTIONS
CROSS SECTIONS
DISTRIBUTION
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EMISSION
FERMIONS
HADRONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEP STORAGE RINGS
LEPTON-LEPTON INTERACTIONS
LEPTONS
LIE GROUPS
LINEAR ACCELERATORS
MESONS
MONTE CARLO METHOD
MULTI-PHOTON PROCESSES
MUONS
PAIR PRODUCTION
PARTICLE INTERACTIONS
PHOTON EMISSION
POLARIZED PRODUCTS
RADIATIVE CORRECTIONS
STANFORD LINEAR COLLIDER
STORAGE RINGS
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
U GROUPS
U-2 GROUPS
Z NEUTRAL BOSONS