Supersymmetric photonic signals at LEP

Preprint

14 November 1996

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9609524

Abstract

We explore and contrast the single-photon and diphoton signals expected at LEP 2, that arise from neutralino-gravitino (e^+ e^- -> chi + gravitino -> gamma + E_miss) and neutralino-neutralino (e^+ e^- -> chi + chi -> gamma + gamma + E_miss) production in supersymmetric models with a light gravitino. LEP 1 limits imply that one may observe either one, but not both, of these signals at LEP 2, depending on the values of the neutralino and gravitino masses: single-photons for m_chi > Mz and m_gravitino < 3 x 10^-5 eV; diphotons for m_chi < Mz and all allowed values of m_gravitino.

Keywords

SUPERSYMMETRIC PHOTONIC
PHOTONIC SIGNALS
SIGNALS AT LEP
SINGLE PHOTON
GRAVITINO
DIPHOTON

All Related Versions

Version 1, 1996-09-30, ArXiv
Version 2, 1996-11-14, ArXiv
Published version: Physical Review Letters, 77 (26), 5168.

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