Search for B_s⁰-B̅_s⁰

Authors

F. Abe, National Laboratory for High Energy Physics (KEK), Tsukuba, Ibaraki 305, Japan
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Collider Detector at Fermilab Collaboration

Date of this Version

5-3-1999

Comments

Published by American Physical Society. Phys. Rev. Lett. 82, 3576 (1999). http://prl.aps.org. Copyright © 1999 American Physical Society. Permission to use.

Abstract

A search for B_s⁰-B̅_s⁰ oscillations is performed in a sample of B_s⁰ semileptonic decays collected using dilepton triggers at the Tevatron Collider during 1992–1995. The B_s⁰ is reconstructed using φ mesonlepton correlations; its initial production flavor is determined with the second lepton in the event. From a signal of 1068 with a B_s⁰ purity of 61%, we obtain a limit on the B_s⁰-B̅_s⁰ oscillation frequency of Δm_s>5.8 ps^-1 at 95% confidence level.