Search for scalar top quarks in the acoplanar charm jets and missing transverse energy final state in pp collisions at √s = 1.96 TeV

Authors

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

Document Type

Article

Date of this Version

June 2008

Comments

Published in Physics Letters B 665 (2008) 1–8. Used by permission.

Abstract

We present a search for the pair production of scalar top quarks, t, using 995 pb⁻¹ of data collected in pp collisions with the DØ detector at the Fermilab Tevatron Collider at √s = 1.96 TeV. Both scalar top quarks are assumed to decay into a charm quark and a neutralino (χ⁰₁), where χ⁰₁is the lightest supersymmetric particle. This leads to a final state with two acoplanar charm jets and missing transverse energy. We find the yield of such events to be consistent with the standard model expectation, and exclude sets of t and χ⁰₁ masses at the 95% C.L. that substantially extend the domain excluded by previous searches.