Measurement of A_c with charmed mesons at SLD

1999/07/20 by K. Abe, The SLD Collaboration, Abe, K.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/9907039

12 pages 4 figures Latex. Contributed to EPS99 and to Lepton-Photon99

arxiv created 1999/07/20 · arxiv updated 2009/11/30

Abstract

We present a direct measurement of the parity-violation parameter A_c. The measurement is based on 550k Z⁰ decays collected by the SLD detector. The mean electron-beam polarization is |P_e| = 73 %. The tagging of c-quark events was performed using two methods: The exclusive reconstruction of D^*+, D⁺, and D⁰ mesons, and the inclusive P_T spectrum of soft-pions (pi_s) in the decay of D^*+ -> D⁰ pi_s⁺. The results of these two methods are combined to give A_c = 0.688 +- 0.035(stat.) +- 0.025(sys.) (preliminary).

Related

• Direct Measurement of A_c using Inclusive Charm Tagging at the SLD Detector
• Measurements of Parity-Violation Parameters at SLD
• Measurements of Z⁰ to Heavy-quark couplings at SLD
• A Preliminary Direct Measurement of the s-Quark Coupling
• Preliminary Direct Measurement of the s-Quark Asymmetry