Observation of the Coulomb interaction effect in pion pairs from the reaction p + Ta → π+ + π− + X at 70 GeV

L. Afanasyev,A.S. Chvyrov, V. Karpukhin,V.I. Komarov, A.V. Kolomyichenko,V.V. Kruglov,A.V. Kuptsov,L.L. Nemenov, M.V. Nikitin,Mikhail A. Ivanov,Zh.P. Pustylnik, M.N. Shumakov, S.M. Frolikov,O.E. Gorchakov,A.V. Kulikov,S.V. Trusov, V. Yazkov, A.P. Kurov

Physics Letters B（1991）

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Abstract

Abstract Pion pair production from the proton-tantalum nuclear interaction at proton energy 70 GeV has been studied. Pion correlations as a function of the relative momentum in a pair CMS have been measured at the relative momentum region below 40 MeV/ c . The experimental data agree with the calculation that takes into account the Coulomb factor in the differential cross section of pion pairs production.

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Key words

pion pairs,coulomb interaction effect

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