Parity-Violating Electron-Deuteron Scattering
نویسنده
چکیده
The longitudinal asymmetry due to Z0 exchange is calculated in quasi-elastic electron-deuteron scattering at momentum transfers |Q2| ' 0.1 GeV2 relevant for the SAMPLE experiment. The deuteron and pn scattering-state wave functions are obtained from solutions of a Schrödinger equation with the Argonne v18 potential. Electromagnetic and weak neutral oneand two-nucleon currents are included in the calculation. The two-nucleon currents of pion range are shown to be identical to those derived in Chiral Perturbation Theory. The results indicate that two-body contributions to the asymmetry are small (' 0.2%) around the quasi-elastic peak, but become relatively more significant (' 3%) in the high-energy wing of the quasielastic peak. pacs: 13.10.+q, 21.45.+v, 25.30.Fj
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تاریخ انتشار 2000