We have searched in p (p) over bar collisions at root s = 1.8 TeV for events with three charged leptons and missing transverse energy. In the minimal supersymmetric standard model, we expect trilepton events from chargino-neutralino (<(chi)over tilde>(+/-)(1)<(chi)over tilde>(0)(2) pair production, with subsequent decay into leptons. We observe no candidate e(+)e(-)e(+/-), e(+)e(-)mu(+/-), e(+/-)mu(+)mu(-), or mu(+)mu(-)mu(+/-) events in 106 pb(-1) integrated luminosity. We present limits on the sum of the branching ratios times cross section for the four channels: sigma(<(chi)over tilde>1)(+/-)(<(chi)over tilde>2)B-0(<(chi)over tilde>(+/-)(1)<(chi)over tilde>(0)(2) --> 3l + X) < 0.34 pb, M(<(chi)over tilde>1)(+/-) > 81.5 GeV/c(2), and M(<(chi)over tilde>2)(0) > 82.2 GeV/c(2) for tan beta = 2, mu = -600 GeV/c(2), and M-(q over tilde) = M-(g over tilde).

F., A., H., A., A., A., M. G., A., A., A., S. R., A., et al. (1998). Search for chargino-neutralino associated production at the Fermilab tevatron collider. PHYSICAL REVIEW LETTERS, 80(24), 5275-5280 [10.1103/PhysRevLett.80.5275].

Search for chargino-neutralino associated production at the Fermilab tevatron collider

A. Cerri;PAOLETTI, RICCARDO;
1998-01-01

Abstract

We have searched in p (p) over bar collisions at root s = 1.8 TeV for events with three charged leptons and missing transverse energy. In the minimal supersymmetric standard model, we expect trilepton events from chargino-neutralino (<(chi)over tilde>(+/-)(1)<(chi)over tilde>(0)(2) pair production, with subsequent decay into leptons. We observe no candidate e(+)e(-)e(+/-), e(+)e(-)mu(+/-), e(+/-)mu(+)mu(-), or mu(+)mu(-)mu(+/-) events in 106 pb(-1) integrated luminosity. We present limits on the sum of the branching ratios times cross section for the four channels: sigma(<(chi)over tilde>1)(+/-)(<(chi)over tilde>2)B-0(<(chi)over tilde>(+/-)(1)<(chi)over tilde>(0)(2) --> 3l + X) < 0.34 pb, M(<(chi)over tilde>1)(+/-) > 81.5 GeV/c(2), and M(<(chi)over tilde>2)(0) > 82.2 GeV/c(2) for tan beta = 2, mu = -600 GeV/c(2), and M-(q over tilde) = M-(g over tilde).
1998
F., A., H., A., A., A., M. G., A., A., A., S. R., A., et al. (1998). Search for chargino-neutralino associated production at the Fermilab tevatron collider. PHYSICAL REVIEW LETTERS, 80(24), 5275-5280 [10.1103/PhysRevLett.80.5275].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39310
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo