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Phys. Rev. Lett. 101, 251801 (2008) [7 pages]

Search for Supersymmetry in pp̅ Collisions at s=1.96  TeV Using the Trilepton Signature for Chargino-Neutralino Production

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T. Aaltonen et al. CDF Collaboration
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Received 19 August 2008; published 15 December 2008

We use the three lepton and missing energy trilepton signature to search for chargino-neutralino production with 2.0  fb-1 of integrated luminosity collected by the CDF II experiment at the Tevatron pp̅ collider. We expect an excess of approximately 11 supersymmetric events for a choice of parameters of the mSUGRA model, but our observation of 7 events is consistent with the standard model expectation of 6.4 events. We constrain the mSUGRA model of supersymmetry and rule out chargino masses up to 145  GeV/c2 for a specific choice of parameters.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.251801
DOI:
10.1103/PhysRevLett.101.251801
PACS:
14.80.Ly, 12.60.Jv, 13.85.Rm