Confirmation of a soft photon signal in excess of QED expectations in
pi(-)p interactions at 280 GeV/c

Belogianni, A
Beusch, W
Brodbeck, TJ
Evans, D
French, BR
and Jacholkowski, A
Kinson, JB
Kirk, A
Lenti, V and
Loconsole, RA
Manzari, V
Minashvili, I
Perepelitsa, V and
Russakovich, N
Sonderegger, P
SpyropoulouStassinaki, M and
Tchlatchidze, G
Vassiliadis, G
Vichou, I
VillalobosBaillie,
O

Confirmation of a soft photon signal in excess of QED expectations in pi(-)p interactions at 280 GeV/c

Authors: A Belogianni Beusch, W Brodbeck, TJ Evans, D French, BR and Jacholkowski, A Kinson, JB Kirk, A Lenti, V and Loconsole, RA Manzari, V Minashvili, I Perepelitsa, V and Russakovich, N Sonderegger, P SpyropoulouStassinaki, M and Tchlatchidze, G Vassiliadis, G Vichou, I VillalobosBaillie, O
Publication date: 1 January 1997
Publisher

Abstract

Photons produced in pi(-) p 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 +/- 1.5 times the Q.E.D. inner bremsstrahlung prediction was observed confirming the results of a previous experiment. (C) 1997 Elsevier Science B.V

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