Measurement of a C with Charmed Mesons at Sld * the Sld Collaboration
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چکیده
We present a direct measurement of the parity-violation parameter A c. The measurement is based on 550k Z 0 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 D 0 mesons, and the inclusive P T spectrum of soft-pions (π s) in the decay of D * + → D 0 π + s. The results of these two methods are combined to give A c = 0.688 ± 0.035(stat.) ± 0.025(sys.) (preliminary).
منابع مشابه
Measurement of A c with Charmed Mesons at SLD
We present a direct measurement of the parity-violation parameter A c in the coupling of the Z 0 to c-quarks with the SLD detector. The measurement is based on a sample of 530k hadronic Z 0 decays, produced with a mean electron-beam polarization of |P e | = 73%. The tagging of c-quark events is performed using two methods: the exclusive reconstruction of D * + , D + , and D 0 mesons, and the so...
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تاریخ انتشار 1999