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
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله

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'
Journal: Physics Letters B - Brought to you by:Anil Neerukonda Institute of Technology and Sciences 'Renewal due by 31 Dec 2017'
نویسندگان
STAR Collaboration STAR Collaboration, L. Adamczyk, G. Agakishiev, M.M. Aggarwal, Z. Ahammed, A.V. Alakhverdyants, I. Alekseev, J. Alford, C.D. Anson, D. Arkhipkin, E. Aschenauer, G.S. Averichev, J. Balewski, A. Banerjee, Z. Barnovska, D.R. Beavis,