Search for Pair Production of Scalar Bottom Quarks in pp̅ 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 R. Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

10-27-2006

Comments

Published by American Physical Society. Phys. Rev. Lett. 97, 171806 (2006). http://prl.aps.org. Copyright © 2006 American Physical Society. Permission to use.

Abstract

A search for direct production of scalar bottom quarks (b̃) is performed with 310 pb^-1 of data collected by the D0 experiment in pp̅ collisions at √s = 1.96 TeV at the Fermilab Tevatron Collider. The topology analyzed consists of two b jets and an imbalance in transverse momentum due to undetected neutralinos (χ̃₁⁰), with χ̃₁⁰ assumed to be the lightest supersymmetric particle. We find the data consistent with standard model expectations, and set a 95% C.L. exclusion domain in the (m_b̃, m _χ̃1⁰) mass plane, improving significantly upon the results from run I of the Tevatron.