Search for charged massive long-lived particles at s=1.96TeV
Abstract
We present a search for charged massive long-lived particles (CMLLPs) that are pair produced in pp¯ collisions at s=1.96TeV 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 muonlike particles that have both speed and ionization energy loss (dE/dx) different from muons produced in pp¯ collisions. In the absence of evidence for CMLLPs corresponding to 6.3fb-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 to 0.008 pb for scalar tau lepton masses of 100-300 GeV.
- Publication:
-
Physical Review D
- Pub Date:
- March 2013
- DOI:
- 10.1103/PhysRevD.87.052011
- Bibcode:
- 2013PhRvD..87e2011A
- Keywords:
-
- 13.85.Rm;
- 14.80.Ly;
- Limits on production of particles;
- Supersymmetric partners of known particles