Distinctive Signals of spontaneous R-parity breaking at LEP-II

Details Distinctive Signals of spontaneous R-parity breaking at LEP-II Distinctive Signals of spontaneous R-parity breaking at LEP-II

1996-01-31

arxiv.org/abs/hep-ph/9601382v1

Phys.Lett. B378 (1996) 342-346; Erratum-ibid. B384 (1996) 492

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 11 pages, 4 figures available from the first author on request

Scientific paper

10.1016/0370-2693(96)00395-4

We consider the signals of pair-produced charginos in an $e^{+}e^{-}$ collider, in a scenario where R-parity is spontaneously broken. The possibility of lepton-chargino mixing, together with the presence of a Majoron, opens up the two-body decay channel of a chargino into a tau and a Majoron. We have studied the regions where this is the dominant decay of a chargino, and have shown that over a large region of the parameter space the ensuing signals, namely tau-pairs with missing-$p_T$, may rise well above standard model backgrounds at LEP-II. Such signals can also enable one to distinguish between spontaneous and explicit R-parity breaking.

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