Search for Resonant Second Generation Slepton Production at the Fermilab Tevatron

Authors

V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Gregory R. Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

9-15-2006

Comments

Published by American Physical Society. Phys. Rev. Lett. 97, 111801 (2006). http://prl.aps.org. Copyright © 2006 American Physical Society. Permission to use.

Abstract

We present a search for supersymmetry in the R-parity violating resonant production and decay of smuons and muon sneutrinos in the channels μ̃→ χ̃₁⁰μ, μ̃→ χ̃_2,3,4⁰μ, and ν̃_μ→ χ̃_1,2^±μ. We analyzed 0:38 fb^-1 of integrated luminosity collected between April 2002 and August 2004 with the D0 detector at the Fermilab Tevatron Collider. The observed number of events is in agreement with the standard model expectation, and we calculate 95% C.L. limits on the slepton production cross section times branching fraction to gaugino plus muon, as a function of slepton and gaugino masses. In the framework of minimal supergravity, we set limits on the coupling parameter λ ′₂₁₁, extending significantly previous results obtained in Run I of the Tevatron and at the CERN LEP collider.