Single spin asymmetries in inclusive $π^0$ production in $p+p$ and $π^-+p$ interactions at 40-70 GeV

Mochalov, V. V.; Davidenko, A. M.; Derevschikov, A. A.; Goncharenko, Y. M.; Khodyrev, V. Y.; Kravtsov, V. I.; Matulenko, Y. A.; Melnick, Y. M.; Meschanin, A. P.; Minaev, N. G.; Morozov, D. A.; Nogach, L. V.; Nurushev, S. B.; Prudkoglyad, L. F.; Semenov, P. A.; Soloviev, L. F.; Vasiliev, A. N.; Yakutin, A. E.; Bazhanov, N. L.; Borisov, N. S.; Fedorov, A. N.; Koloimiets, V. G.; Lazarev, A. B.; Neganov, A. B.; Plis, Y. A.; Shchevelev, O. N.; Usov, Y. A.

Single spin asymmetries in inclusive $π^0$ production in $p+p$ and $π^-+p$ interactions at 40-70 GeV

Authors

Description

We present recent results of single-spin asymmetry $A_N$ measurements in $π^0$ inclusive production. Asymmetry was measured in $π^-p$ 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.
4 pages, 9 figures, Talk given at ICHEP-2006