I Prex in 2010
نویسنده
چکیده
Because of various problems the experiment took only ∼20% of the statistics required but was a major accomplishment as a first measurement of its kind and many milestones were met. We have formulated a request for a followup measurement with anticipated improvements to take data at a rate equivalent to the original proposal estimates. The goal of the experiment is to measure the parity violating asymmetry in elastic scattering A = (σ R − σ L)/(σ R + σ L) from the 208 Pb nucleus. This asymmetry is sensitive mainly to the neutron radius R n because the weak charge of the neutron is much larger than that of the proton [1]. In PWIA, the relationship between the asymmetry and the neutron form factor is given by equation (1)
منابع مشابه
Proposal to Jefferson Lab PAC 38 PREX-II: PRECISION PARITY-VIOLATING MEASUREMENT OF THE NEUTRON SKIN OF LEAD
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