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27 April 2024

» arxiv » 0712.2677

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The Comparative Study of the Inclusive $pi^0$ Analyzing Power in Reactions p+p(pol)->pi^0 + X and pi^-+p(pol)->pi^0 + X at 50 and 40 Gev/C Respectively
V.V.Mochalov ; S.B.Nurushev ; A.N.Vasiliev ; N.A.Bazhanov ; N.S.Borisov ; Y.M.Goncharenko ; A.M.Davidenko ; A.A.Derevschikov ; V.G.Kolomiets ; V.A.Kormilitsin ; V.I.Kravtsov ; A.B.Lazarev ; Yu.A.Matulenko ; Yu.M.Melnick ; A.P.Meschanin ; N.G.Minaev ; D.A.Morozov ; A.B.Neganov ; L.V.Nogach ; Yu.A.Plis ; A.F.Prudkoglyad ; A.V.Ryazantsev ; P.A.Semenov ; O.N.Shchevelev ; L.F.Soloviev ; Yu.A.Usov ; A.E.Yakutin ;
Date:	17 Dec 2007
Abstract:	Single-spin asymmetries $A_N$ in reactions p+p(pol)->pi^0 + X and pi^-+p(pol)->pi^0 + X at 50 and 40 GeV/c respectively behave in drastically different ways in function of transverse momentum in the central region. At the same time $A_N$ in the polarized proton fragmentation region of these reactions are practically coinciding. Our new data on the analyzing power at 50 GeV/c in the polarized proton fragmentation region in reaction p+p(pol)->pi^0 + X confirm this conclusion with better statistics and coincide with our previous data at 70 GeV/c for the same reaction.
Source:	arXiv, 0712.2677
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