arXiv · hep-ex/0501063
Single spin asymmetry measurements for $π^0$ inclusive productions in $p+p_{\uparrow} \to π^0 + X$ and $π^-+\p_{\uparrow}\to π^0+X$ reactions at 70 and 40 GeV respectively
Abstract
The inclusive $π^0$ asymmetries were measured in reactions $p+p\uparrow \to π^0+X$ and $π^-+p\uparrow \to π^0+X$ at 70 and 40 GeV/c respectively. The measurements were made at the central region (for the first reaction) and asymmetry is compatible with zero in the entire measured $p_T$ region. For the second reaction the asymmetry is zero for small $x_F$ region ($-0.4<x_F<-0.1, 0.5<p_T(GeV/c) <1.5$) and increases with growth of $\mid x_F\mid$. Averaged over the interval $-0.8<x_F<-0.4, 1<p_T(GeV/c)<2$ the asymmetry was $-(13.8\pm 3.8)%$.
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A. M. Davidenko, A. A. Derevschikov, V. N. Grishin, V. Yu. Khodyrev, Yu. A. Matulenko, Yu. M. Melnick, A. P. Meschanin, V. V. Mochalov, L. V. Nogach, S. B. Nurushev, P. A. Semenov, A. F. Prudkoglyad, K. E. Shestermanov, L. F. Soloviev, A. N. Vasiliev, A. E. Yakutin, N. S. Borisov, V. N. Matafonov, A. B. Neganov, Y. A. Plis, Y. A. Usov, A. N. Fedorov, A. A. Lukhanin, M. G. Ryskin. 2005-01-24. Single spin asymmetry measurements for $π^0$ inclusive productions in $p+p_{\uparrow} \to π^0 + X$ and $π^-+\p_{\uparrow}\to π^0+X$ reactions at 70 and 40 GeV respectively. https://doi.org/10.1142/9789812701909_0110
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