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Further analysis of a direct soft photon excess in π−p interactions at 280 GeV/c

Belogianni, A ; Beusch, W ; Brodbeck, T.J ; Evans, D ; French, B.R ; Ganoti, P ; Jacholkowski, A ; Kinson, J.B ; Kirk, A ; Lenti, V ; Loconsole, R.A ; Manzari, V ; Minashvili, I ; Perepelitsa, V.F ; Russakovich, N ; Sonderegger, P ; Spyropoulou-Stassinaki, M ; Tchlatchidze, G ; Vassiliadis, G ; Vichou, I ; Villalobos Baillie, O

Physics letters. B, 2002-11, Vol.548 (3-4), p.122-128 [Periódico revisado por pares]

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Título:
Further analysis of a direct soft photon excess in π−p interactions at 280 GeV/c
Autor: Belogianni, A ; Beusch, W ; Brodbeck, T.J ; Evans, D ; French, B.R ; Ganoti, P ; Jacholkowski, A ; Kinson, J.B ; Kirk, A ; Lenti, V ; Loconsole, R.A ; Manzari, V ; Minashvili, I ; Perepelitsa, V.F ; Russakovich, N ; Sonderegger, P ; Spyropoulou-Stassinaki, M ; Tchlatchidze, G ; Vassiliadis, G ; Vichou, I ; Villalobos Baillie, O
Assuntos: Bremsstrahlung ; Photon excess ; Soft photons ; π−p interactions
É parte de: Physics letters. B, 2002-11, Vol.548 (3-4), p.122-128
Descrição: In this Letter we present additional experimental characteristics of anomalous soft photon radiation observed in π−p interactions at 280 GeV/c in the CERN experiment WA91, together with a re-calculated ratio of the observed direct soft photon signal to the expected level of the hadronic inner bremsstrahlung, which is found to be 5.3±1.0. The other presented characteristics, energy dependence and angular distributions of direct soft photons, show the similarity of the observed signal to the expected hadronic bremsstrahlung behaviour.
Editor: Elsevier B.V
Idioma: Inglês

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