Single spin asymmetries in inclusive $\pi^0$ production in $p+p$ and $\pi^-+p$ interactions at 40-70 GeV
/ Authors
V. Mochalov, A.M.Davidenko, A.A.Derevschikov, Y.M.Goncharenko, V.Y.Khodyrev, V.I.Kravtsov, Y.A.Matulenko, Y.M.Melnick, A.P.Meschanin, N.G.Minaev
and 17 more authors
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
/ Abstract
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.