Observation of the B_c Meson in the Exclusive Decay B_c → J/ψπ

Authors

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

Date of this Version

July 2008

Comments

Published in Physical Review Letters 101, 012001 (2008).

Abstract

A fully reconstructed B_c → J/ψπ signal is observed with the D0 detector at the Fermilab Tevatron pp collider using 1.3 fb^-1 of integrated luminosity. The signal consists of 54 ± 12 candidates with a significance that exceeds 5 standard deviations, and confirms earlier observations of this decay. The measured mass of the B_c meson is 6300 ± 14(stat) ± 5(syst) MeV/c².