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Search for Zgamma events with large missing transverse energy in ppbar collisions at sqrt(s)=1.96 TeV

Abstract : We present the first search for supersymmetry (SUSY) in Zgamma final states with large missing transverse energy using data corresponding to an integrated luminosity of 6.2 fb-1 collected with the D0 experiment in ppbar collisions at sqrt(s)=1.96 TeV. This signature is predicted in gauge-mediated SUSY-breaking models, where the lightest neutralino is the next-to-lightest supersymmetric particle (NLSP) and is produced in pairs, possibly through decay from heavier supersymmetric particles. The NLSP can decay either to a Z boson or a photon and an associated gravitino that escapes detection. We exclude this model at the 95% C.L. for SUSY breaking scales of Lambda < 87 TeV, corresponding to neutralino masses of < 151 GeV.
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http://hal.in2p3.fr/in2p3-00682424
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, March 26, 2012 - 8:19:08 AM
Last modification on : Thursday, November 19, 2020 - 12:58:56 PM

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V.M. Abazov, H. Li, G. Sajot, J. Stark, S. Greder, et al.. Search for Zgamma events with large missing transverse energy in ppbar collisions at sqrt(s)=1.96 TeV. Physical Review D, American Physical Society, 2012, 86, pp.071701(R). ⟨10.1103/PhysRevD.86.071701⟩. ⟨in2p3-00682424⟩

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