کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8189250 1528846 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Single spin asymmetry AN in polarized proton-proton elastic scattering at s=200GeV
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Single spin asymmetry AN in polarized proton-proton elastic scattering at s=200GeV
چکیده انگلیسی
We report a high precision measurement of the transverse single spin asymmetry AN at the center of mass energy s=200GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The AN was measured in the four-momentum transfer squared t range 0.003⩽|t|⩽0.035(GeV/c)2, the region of a significant interference between the electromagnetic and hadronic scattering amplitudes. The measured values of AN and its t-dependence are consistent with a vanishing hadronic spin-flip amplitude, thus providing strong constraints on the ratio of the single spin-flip to the non-flip amplitudes. Since the hadronic amplitude is dominated by the Pomeron amplitude at this s, we conclude that this measurement addresses the question about the presence of a hadronic spin flip due to the Pomeron exchange in polarized proton-proton elastic scattering.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Brought to you by:Anil Neerukonda Institute of Technology and Sciences 'Renewal due by 31 Dec 2017'
نویسندگان
, , , , , , , , , , , , , , , ,