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Analyzing power of the reaction (p)over-right-arrowp -> pp pi(0) at a beam energy of 390 MeV

Author:
Maeda, Y  Segawa, M  Yoshida, HP  Nomachi, M  Shimbara, Y  Sugaya, Y  Yasuda, K  Tamura, K  Ishida, T  Yagita, T  Kacharava, A  


Journal:
NUCLEAR PHYSICS A


Issue Date:
2003


Abstract(summary):

The analyzing power of the reaction (p) over barp-->pppi(0) has been measured at a beam energy of 390 MeV. The dependences of the analyzing power on the pion emission-angle and the relative momentum of two outgoing protons have been obtained. The angular dependence could be decomposed by Legendre polynomial and the relative contribution of the P-21 to the P-11 function is less than 4%. The momentum dependence of the analyzing power has been studied to obtain information about the pion-production mechanism. It has been deduced that pion production due to the long-range interaction plays an important role in the momentum dependence of the P-state amplitude.


Page:
629C---632C


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