Search for charged massive long-lived particles at sqrt(s)= 1.96 TeV

Abstract : We present a search for charged massive long-lived particles (CMLLPs) that are pair produced in p-pbar collisions at sqrt(s)= 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider. Our result is a combination of two searches where either one or both CMLLPs are reconstructed in the detector. We select events with muon-like particles that have both speed and ionization energy loss dE/dx different from muons produced in p-pbar collisions. In the absence of evidence for CMLLPs corresponding to 6.3 fb-1 of integrated luminosity, we set limits on the CMLLP masses in several supersymmetric models, excluding masses below 278 GeV for long-lived gaugino-like charginos, and masses below 244 GeV for long-lived higgsino-like charginos at the 95% C.L. We also set limits on the cross section for pair production of long-lived scalar tau leptons that range from 0.04 pb to 0.008 pb for scalar tau lepton masses of 100 to 300 GeV.
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Journal articles
Physical Review D, American Physical Society, 2013, 87, pp.052011. <10.1103/PhysRevD.87.052011>


http://hal.in2p3.fr/in2p3-00751223
Contributor : Sylvie Florès <>
Submitted on : Tuesday, November 13, 2012 - 7:00:52 AM
Last modification on : Thursday, March 7, 2013 - 7:00:12 AM

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V.M. Abazov, U. Bassler, G. Bernardi, M. Besançon, D. Brown, et al.. Search for charged massive long-lived particles at sqrt(s)= 1.96 TeV. Physical Review D, American Physical Society, 2013, 87, pp.052011. <10.1103/PhysRevD.87.052011>. <in2p3-00751223>

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