/ Experiment-HEP arXiv:0712.2677

The Comparative Study of the Inclusive pi0 Analyzing Power in Reactions p+ p(pol) ---> pi0 + X and pi- + p(pol) ---> pi0 + X at 50 and 40-Gev/C Respectively

Mochalov, V.V. (Serpukhov, IHEP) ; Nurushev, Sandibek Baitemirovich (Serpukhov, IHEP) ; Vasiliev, A.N. (Serpukhov, IHEP) ; Bazhanov, N.A. (Dubna, JINR) ; Borisov, N.S. (Dubna, JINR) ; Goncharenko, Y.M. (Serpukhov, IHEP) ; Davidenko, A.M. (Serpukhov, IHEP) ; Derevschikov, A.A. (Serpukhov, IHEP) ; Kolomiets, V.G. (Dubna, JINR) ; Kormilitsin, V.A. (Serpukhov, IHEP) ; Kravtsov, V.I. (Serpukhov, IHEP) ; Lazarev, A.B. (Dubna, JINR) ; Matulenko, Yu.A. (Serpukhov, IHEP) ; Melnick, Yu.M. (Serpukhov, IHEP) ; Meschanin, A.P. (Serpukhov, IHEP) ; Minaev, N.G. (Serpukhov, IHEP) ; Morozov, Dmitry A. (Serpukhov, IHEP) ; Neganov, A.B. (Dubna, JINR) ; Nogach, L.V. (Serpukhov, IHEP) ; Plis, Yu.A. (Dubna, JINR) ; Prudkoglyad, A.F. (Serpukhov, IHEP) ; Ryazantsev, A.V. (Serpukhov, IHEP) ; Semenov, Pavel A. (Serpukhov, IHEP) ; Shchevelev, O.N. (Dubna, JINR) ; Soloviev, L.F. (Serpukhov, IHEP) ; Usov, Yu.A. (Dubna, JINR) ; Yakutin, A.E. (Serpukhov, IHEP)

Pages: 4

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.

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 Record created 2010-10-29, last modified 2014-01-30

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