Invisible Events with Radiative Photons at LEP

Abstract

A study of the radiative neutrino counting reaction $e^{+}{e}^{-}\to \nu \bar{\nu }\gamma$ at LEP1 and LEP2 energies is presented. An approximate expression for the spectrum of the observed photon is derived within the framework of the $p_t$-dependent structure function approach. This is compared with an exact expression and found in agreement within the foreseen experimental accuracy. This model describing single-photon radiation can be applied to the more general case of initial-state single-photon emission accompanying invisible final-state events. Higher-order QED corrections due to undetected initial-state radiation are also included. The implementation in a Monte Carlo event generator is briefly described.

10 pages, LaTeX, 7 figures available via anonymous ftp at: ftp://cobra1.pv.infn.it/pub/phot/, files fig#n.ps with #=1,...,7

Cited by in corpus (18)

• Photon Events with Missing Energy in e+e- Collisions at sqrt{s} = 130 to 209 GeV
• Massive Doublet Leptons
• Search for one large extra dimension with the DELPHI detector at LEP
• Light dark states with electromagnetic form factors
• Lepton-Flavored Scalar Dark Matter with Minimal Flavor Violation
• Single- and multi-photon final states with missing energy at e+e- colliders
• Precision Physics at LEP
• Measurement of Trilinear Gauge Boson Couplings WWV, (V = Z,gamma) in e+e- Collisions at 189 GeV
• Study of Triple-Gauge-Boson Couplings ZZZ, ZZgam and Zgamgam at LEP
• Virtual LSPs at e+ e- Colliders
• Hadronic cross section of $e^{+}{e}^{-}$ annihilation at bottomonium energy region
• Probing Scotogenic Effects in e+e- Colliders
• Characterizing Invisible Electroweak Particles through Single-Photon Processes at High Energy $e^{+}{e}^{-}$ Colliders
• Explorations of pseudo-Dirac dark matter having keV splittings and interacting via transition electric and magnetic dipole moments
• Constraining nonstandard neutrino interactions at electron colliders
• Dark states with electromagnetic form factors at electron colliders
• Constraining the SMEFT Extended with Sterile Neutrinos at FCC-ee
• Discrimination of SUSY breaking models using single-photon processes at future e+e- linear colliders