Radiative production of sneutrinos in [ital e][sup +][ital e[minus]] annihilation with polarized beams

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.49.3126· OSTI ID:5093289

Franke, F; Fraas, H ^[1]

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1. Physikalisches Institut, Universitaet Wuerzburg, D-97074 Wuerzburg (Germany)

We give for the process [ital e][sup +]+[ital e][sup [minus]][r arrow][tilde [nu]]+[tilde [bar [nu]]]+[gamma] of radiative sneutrino production with polarized beams the complete analytic expression for the transition amplitude. For beam energies between 100 and 500 GeV the total cross section, the photon energy spectrum, and photon angular distribution as well as the respective longitudinal polarization asymmetries are computed in representative gaugino-Higgsino mixing scenarios with the sneutrino decaying only into the lightest neutralino. Comparing the results with those for the competing standard process of radiative neutrino production we show that with the expected luminosity for a 500-GeV [ital e][sup +][ital e[minus]] collider it would be difficult to identify a sneutrino lighter than both the chargino and the second lightest neutralino. The use of longitudinally polarized beams especially would not facilitate identification of the sneutrino in this mass region.

• OSTI ID: 5093289
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 49:7; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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662440* -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
663300 -- Nuclear Reactions & Scattering
General-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
ANGULAR DISTRIBUTION
ANNIHILATION
ASYMMETRY
BASIC INTERACTIONS
BEAMS
BOSONS
CROSS SECTIONS
DISTRIBUTION
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
FERMIONS
GEV RANGE
GEV RANGE 100-1000
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRINOS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHOTONS
POLARIZATION
POLARIZED BEAMS
SPECTRA
STANDARD MODEL
SUPERSYMMETRY
SYMMETRY
TOTAL CROSS SECTIONS
TRANSITION AMPLITUDES
UNIFIED GAUGE MODELS