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Annihilation of + $$ \bar p $$ + p → e + + e − + π0 and + $$ \bar p $$ + p → γ + π0 through an ω-Meson intermediate state

Abstract : The s-channel annihilation of proton and antiproton into a neutral pion and a real or virtual photon followed by lepton pair emission is studied. Such mechanism is expected to play a role at moderate values of the total energy $\sqrt{s}$, when the pion is emitted around $90^{\circ}$ in the center of mass. A fair comparison with the existing data is obtained taking into account scattering and annihilation channels. The cross section is calculated and numerical results are given in the kinematical range accessible in the PANDA experiment at FAIR.
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http://hal.in2p3.fr/in2p3-00710553
Contributor : Sophie Heurteau <>
Submitted on : Thursday, June 21, 2012 - 10:12:13 AM
Last modification on : Wednesday, October 14, 2020 - 4:04:58 AM

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E. A. Kuraev, Yu. M. Bystritskiy, V. V. Bytev, A. Dbeyssi, E. Tomasi-Gustafsson. Annihilation of + $$ \bar p $$ + p → e + + e − + π0 and + $$ \bar p $$ + p → γ + π0 through an ω-Meson intermediate state. Journal of Experimental and Theoretical Physics (JETP) / Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki, MAIK Nauka/Interperiodica, 2012, 115 (1), pp.93-104. ⟨10.1134/S1063776112060064⟩. ⟨in2p3-00710553⟩

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