arxiv: hep-ex/0312009 · v1 · submitted 2003-12-02 · ✦ hep-ex

Recent Results from Protvino Polarized Experiment Proza-M

V.Mochalov , N.Borisov , A.Davidenko , A.Fedorov , V.Grishin , V.Khodyrev , V.Kravtsov , A.Lukhanin

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V.Matafonov Yu.Matulenko V.Medvedev Yu.Melnick A.Meschanin D.Morozov A.Neganov L.Nogach S.Nurushev Yu.Plis A.Prudkoglyad P.Semenov K.Shestermanov V.Solovianov L.Soloviev Yu.Usov A.Vasiliev A.Yakutin

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keywords asymmetrypolarizedprotvinoreactionacceleratorbarsbeginscentre

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Single Spin Asymmetry $A_N$ (SSA) was measured at the Protvino 70 GeV accelerator. Asymmetry in the reaction $\ppdup$ is close to zero within error bars at small $|\xf|$ and $p_T<1.5$ GeV/c. SSA in the reaction $\pimp$ at polarized target fragmentation region equals to $(-13.8 \pm 3.8)%$ at $|x_f|>0.4$. There is an indication that the asymmetry begins to rise up at the same centre of mass system pion energy.

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Recent Results from Protvino Polarized Experiment Proza-M

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