Inclusive pion and eta production in p+Nb collisions at 3.5 GeV beam energy

G Agakishiev,A Lebedev, L Naumann,D Gonzalezdiaz, O Fateev,Yvonne Chiara Pachmayer, A Reshetin, H Kuc,B Spruck,S Lang,I Froehlich,H Tsertos,M Palka,A Sadovsky,A Blanco,V Pechenov,Y Zanevsky,J Stroth,O Pechenova,M Traxler, Y Parpottas, A Rustamov, J Wuestenfeld, J C Bergerchen, B Ramstein,P Cabanelas, V Metag,A Tarantola, B Michalska,J L Boyard,V Wagner, A Ierusalimov, C Muentz,J Pietraszko, W Przygoda, L Fabbbietti, J Markert,T Galatyuk,M Gumberidze,C Sturm,P Salabura,G Kornakov,Lars S Maier,A Schmah,Tao Liu, H Stroebele,J Michel,A B Kurepin, K Lapidus, B Kaempfer, J Siebenson,E Schwab, R Gernhaeuser,R Holzmann, J Friese, A Dybczak, B W Kolb, C Wendisch, I Iori,S Spataro,M Boehmer,P Tlusty,Kristin Goebel,P Fonte,M Weber, K Teilab,T Hennino,A Balanda, R Trebacz,L Lopes,A Ivashkin,D Belver,W Koenig,Tony F Heinz,S P Chernenko, F Krizek,R Kruecken,P Finocchiaro,V P Ladygin, E Epple, S Yurevich,F Guber,A Mangiarotti,R Kotte,M Jurkovic,M Lorenz,W Kuehn,Yu G Sobolev,I Koenig,J A Garzon,A Belyaev,T A Vasiliev,A Kugler, R Lalik, A Krasa, T Karavicheva, M Golubeva

PHYSICAL REVIEW C（2013）

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摘要

Data on inclusive pion and eta production measured with the dielectron spectrometer HADES in the reaction p + Nb-93 at a kinetic beam energy of 3.5 GeV are presented. Our results, obtained with the photon-conversion method, supplement the rather sparse information on neutral-meson production in proton-nucleus reactions existing for this bombarding energy regime. The reconstructed e(+)e(-)e(+)e(-) transverse-momentum and rapidity distributions are confronted with transport-model calculations, which account fairly well for both pi(0) and eta production.

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