Search for anomalous semileptonic decay of heavy flavor hadrons produced in association with a W boson at CDF II

Authors

A. Abulencia, University of Illinois, Urbana
Kenneth A. Bloom, University of Nebraska-LincolnFollow
CDF Collaboration

Date of this Version

2-27-2006

Comments

Published by American Physical Society. Phys. Rev. D 73, 051101(R) (2006). http://prd.aps.org. Copyright © 2006 American Physical Society. Permission to use.

Abstract

We present a search for anomalous semileptonic decays of heavy flavor hadrons produced in association with a W boson in proton-antiproton collisions at √s = 1:96 TeV.We use 162 pb^-1 of data collected with the CDF II detector at the Fermilab Tevatron Collider. We select events with one W boson and at least one jet with an identified secondary vertex. In the jets with a secondary vertex we look for a semileptonic decay to a muon. We compare the number of jets with both a secondary vertex and a semileptonic decay and the kinematic properties of these jets, with the standard model expectation of W plus heavy flavor production and decay. No discrepancy is seen between the observation and the expectation, and we set limits on the production cross section of a B-like hadron with an anomalously high semileptonic branching ratio.