We present the results of a search for supersymmetry with gauge-mediated breaking and chi-tilda0_1 --> gamma G-tilda in the gamma gamma + missing transverse energy final state. In 2.6 +/- 0.2 fb-1 of p anti-p collisions at s**(1/2) = 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 TeV/c2 on the chi-tilda0_1 mass at tau_chi-tilda0_1 << 1 ns. We also exclude regions in the chi-tilda0_1 mass-lifetime plane for tau_chi-tilda0_1 < 2 ns.

T. AALTONEN, B.ALVAREZ GONZALEZV, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, 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

CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MARGAROLI, FABRIZIO;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2010

Abstract

We present the results of a search for supersymmetry with gauge-mediated breaking and chi-tilda0_1 --> gamma G-tilda in the gamma gamma + missing transverse energy final state. In 2.6 +/- 0.2 fb-1 of p anti-p collisions at s**(1/2) = 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 TeV/c2 on the chi-tilda0_1 mass at tau_chi-tilda0_1 << 1 ns. We also exclude regions in the chi-tilda0_1 mass-lifetime plane for tau_chi-tilda0_1 < 2 ns.
2010
T. AALTONEN, B.ALVAREZ GONZALEZV, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, 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].
T. AALTONEN; B.ALVAREZ GONZALEZV; S. AMERIO; D. AMIDEI; A. ANASTASSOV; A. ANNOVI; J. ANTOS; G. APOLLINARI; J.A. APPEL; A. APRESYAN; T. ARISAWA; A. AR...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

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/11585/99515
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 41
  • ???jsp.display-item.citation.isi??? 29
social impact