A measurement of direct photon production at large p/sub T/ at the CERN ISR

The authors have measured direct photon production in pp collisions at the CERN intersecting storage rings for c.m. energies 31< square root s<63 GeV and transverse momenta up to 9 GeV/c, using segmented lead /liquid-argon calorimeters. The ratio of direct photon to pi /sup 0/ production is si...

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Detalles Bibliográficos
Autores principales: Diakonou, M, Cnops, A M, Fabjan, Christian Wolfgang, Fields, T, Filippas-Tassos, A, Fokitis, E, Fowler, E C, Hood, D M, Kourkoumelis, C, Lissauer, D, Mannelli, I, Molzon, W, Mouzourakis, P, Palmer, R B, Rahm, David Charles, Rehak, P, Resvanis, L K, Stumer, I, Trakkas, C, Willis, W J
Lenguaje:eng
Publicado: 1980
Materias:
Particle Physics - Phenomenology
Acceso en línea:http://cds.cern.ch/record/879369
Descripción
Sumario:The authors have measured direct photon production in pp collisions at the CERN intersecting storage rings for c.m. energies 31< square root s<63 GeV and transverse momenta up to 9 GeV/c, using segmented lead /liquid-argon calorimeters. The ratio of direct photon to pi /sup 0/ production is significantly larger than zero, starting at p/sub T/ approximately=4 GeV/c and increasing to values of about 0.4 at 9 GeV /c. No significant square root s dependence is seen. (14 refs).

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