New measurements of the European Muon Collaboration effect in very light nuclei.
نویسندگان
چکیده
New Jefferson Lab data are presented on the nuclear dependence of the inclusive cross section from (2)H, (3)He, (4)He, (9)Be and (12)C for 0.3 < x < 0.9, Q(2) approximately 3-6 GeV(2). These data represent the first measurement of the EMC effect for (3)He at large x and a significant improvement for (4)He. The data do not support previous A-dependent or density-dependent fits to the EMC effect and suggest that the nuclear dependence of the quark distributions may depend on the local nuclear environment.
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عنوان ژورنال:
- Physical review letters
دوره 103 20 شماره
صفحات -
تاریخ انتشار 2009