We present the results of a search for supersymmetry with gauge-mediated breaking and (chi) over tilde (1)(0) -> gamma(G) over tilde in the gamma gamma + missing transverse energy final state. In 2.6 +/- 0.2 fb(-1) of p (p) over bar collisions at root s 1.96 TeV recorded by the CDF II detector we observe no candidate events, consistent with a standard model background expectation of 1.4 +/- 0.4 events. We set limits on the cross section at the 95% C.L. and place the world's best limit of 149 GeV/c(2) on the (chi) over tilde (1)(0) mass at tau((chi) over tilde 01) << 1 ns. We also exclude regions in the (chi) over tilde (1)(0) mass-lifetime plane for tau((chi) over tilde 01) less than or similar to 2 ns.

Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II / T., A., J., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., A., A., T., A., A., A., J., A., W., A., A., A., A., A., F., A., W., B., A., B.G., V. E., B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 104:1(2010). [10.1103/physrevlett.104.011801]

Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II

DE CECCO, Sandro;GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;
2010

Abstract

We present the results of a search for supersymmetry with gauge-mediated breaking and (chi) over tilde (1)(0) -> gamma(G) over tilde in the gamma gamma + missing transverse energy final state. In 2.6 +/- 0.2 fb(-1) of p (p) over bar collisions at root s 1.96 TeV recorded by the CDF II detector we observe no candidate events, consistent with a standard model background expectation of 1.4 +/- 0.4 events. We set limits on the cross section at the 95% C.L. and place the world's best limit of 149 GeV/c(2) on the (chi) over tilde (1)(0) mass at tau((chi) over tilde 01) << 1 ns. We also exclude regions in the (chi) over tilde (1)(0) mass-lifetime plane for tau((chi) over tilde 01) less than or similar to 2 ns.
2010
01 Pubblicazione su rivista::01a Articolo in rivista
Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II / T., A., J., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., A., A., T., A., A., A., J., A., W., A., A., A., A., A., F., A., W., B., A., B.G., V. E., B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 104:1(2010). [10.1103/physrevlett.104.011801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/104603
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