Recent Results from Protvino Polarized Experiment Proza-M

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

arXiv · hep-ex/0312009

Recent Results from Protvino Polarized Experiment Proza-M

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Abstract

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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V. Mochalov, N. Borisov, A. Davidenko, A. Fedorov, V. Grishin, V. Khodyrev, V. Kravtsov, A. Lukhanin, 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. 2003-12-02. Recent Results from Protvino Polarized Experiment Proza-M. https://arxiv.org/abs/hep-ex/0312009

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