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.

T., A., J., A., B. A., G., S., A., D., A., A., A., et al. (2010). Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II. PHYSICAL REVIEW LETTERS, 104, 011801-1-011801-8 [10.1103/PhysRevLett.104.011801].

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

CIOCCI, MARIA AGNESE;
2010-01-01

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
T., A., J., A., B. A., G., S., A., D., A., A., A., et al. (2010). Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II. PHYSICAL REVIEW LETTERS, 104, 011801-1-011801-8 [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/11365/35873
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