Possible sneutrino-pair signatures with R-parity breaking

Details Possible sneutrino-pair signatures with R-parity breaking Possible sneutrino-pair signatures with R-parity breaking

1995-07-26

arxiv.org/abs/hep-ph/9507426v1

Phys.Lett.B364:27-32,1995; Erratum-ibid.B377:486,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

standard Latex, 9 pages, 2 uufiled postscript figures included via figures command. Compressed postscript version with figures

Scientific paper

10.1016/0370-2693(95)01225-1

If sneutrinos are the lightest supersymmetry partners and $R$-parity is not conserved, the process $e^+e^- \to \tilde {\bar\nu} \tilde {\nu}$ can have striking signatures due to the decay modes $\tilde{\nu}\to\ell^+\ell'^-$ or $\tilde{\nu}\to q \bar q'$. We present cross section formulas and discuss event rates and detection at the upgraded $e^+e^-$ collider LEP. Four-lepton signals should be detectable up to sneutrino mass $\tilde {m}_\nu = 80$ GeV and maybe beyond; four-jet signals should be detectable up to $\tilde {m}_\nu = 70$ GeV, but would probably be obscured thereafter by $WW$ background.

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