Confirmation of a soft photon signal in excess of Q.E.D. expectations in $\pi^- p$ interactions at 280 GeV/c

Photons produced in \pip interactions at 280 GeV/$c$ were detected by reconstructing the $e^+e^-$ pairs produced via the materialisation of the photons in a 1 mm thick lead sheet placed in front of the MWPC's of the OMEGA spectrometer at CERN. A soft photon signal $ 7.8\pm 1.6$ times the Q.E.D....

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Detalles Bibliográficos
Autores principales: Belogianni, A, Beusch, Werner, Brodbeck, T J, Evans, D, French, Bernard R, Jacholkowski, A, Kinson, J B, Kirk, A, Lenti, V, Loconsole, R A, Manzari, V, Minashvili, I A, Perepelitsa, V F, Rusakovitch, N A, Sonderegger, P, Spyropoulou-Stassinaki, M, Tchlatchidze, G A, Vasileiadis, G, Vichou, I, Villalobos Baillie, O
Lenguaje:eng
Publicado: 1996
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(97)00762-4
http://cds.cern.ch/record/315329
Descripción
Sumario:Photons produced in \pip interactions at 280 GeV/$c$ were detected by reconstructing the $e^+e^-$ pairs produced via the materialisation of the photons in a 1 mm thick lead sheet placed in front of the MWPC's of the OMEGA spectrometer at CERN. A soft photon signal $ 7.8\pm 1.6$ times the Q.E.D. inner bremsstrahlung prediction was observed confirming the results of a previous experiment.

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