Search for B_s⁰ µ⁺µ^- and B_d⁰ µ⁺µ^- Decays in pp̅ Collisions at √s =1.96 TeV

Authors

Darin Acosta, University of FloridaFollow
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Collider Detector at Fermilab Collaboration

Date of this Version

7-16-2004

Comments

Published by American Physical Society. Phys. Rev. Lett. 93, 032001 (2004). http://prl.aps.org. Copyright © 2004 American Physical Society. Permission to use.

Abstract

We report on a search for B_s⁰→ µ⁺µ^- and B_d⁰→ µ⁺µ^- decays in p collisions at =1.96 TeV using 171 pb–1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. The decay rates of these rare processes are sensitive to contributions from physics beyond the standard model. One event survives all our selection requirements, consistent with the background expectation. We derive branching ratio limits of Ɓ (B_s⁰→µ⁺µ^-)B_d⁰→µ+µ–)<1.5×10^-7 at 90% confidence level.