Single spin asymmetries in inclusive π⁰ production in p+p and π^-+p interactions at 40-70 GeV

V.V. Mochalov , A.M.Davidenko , A.A.Derevschikov , Y.M.Goncharenko , V.Y.Khodyrev , V.I.Kravtsov , Y.A.Matulenko , Y.M.Melnick

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A.P.Meschanin N.G.Minaev D.A.Morozov L.V.Nogach S.B.Nurushev L.F.Prudkoglyad P.A.Semenov L.F.Soloviev A.N.Vasiliev A.E.Yakutin N.L.Bazhanov N.S.Borisov A.N.Fedorov V.G.Koloimiets A.B.Lazarev A.B.Neganov Y.A.Plis O.N.Shchevelev Y.A.Usov

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classification ✦ hep-ex

keywords asymmetryinclusiveinteractionsproductionresultssingle-spinagreementasymmetries

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We present recent results of single-spin asymmetry $A_N$ measurements in $\pi^0$ inclusive production. Asymmetry was measured in $\pi^-p$ and $pp$ interactions at 40 and 70 GeV correspondingly. Significant asymmetry was observed in the polarized target fragmentation region. The results are in agreement with "universal threshold" of single-spin asymmetry.

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Single spin asymmetries in inclusive π⁰ production in p+p and π^-+p interactions at 40-70 GeV

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