Observation and Properties of the Orbitally Excited B*_s2 Meson

Authors

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

Date of this Version

February 2008

Comments

Published by American Physical Society. Phys. Rev. Lett. 100, 082002 (2008). http://prl.aps.org. Copyright © 2008 American Physical Society. Permission to use.

Abstract

We report the direct observation of the excited L = 1 state B*_s2 in fully reconstructed decays to B⁺K^-. The mass of the B*_s2 meson is measured to be 5839.6 ± 1.1(stat) ± 0.7(syst) MeV/c², and its production rate relative to the B⁺ meson is measured to be [1.15 ± 0.23(stat) ± 0.13(syst)]%.