Data di Pubblicazione:
1989
Citazione:
Double prompt photon production at high transverse momentum by PI- on protons at 280 GeV/c / E. Bonvin, R. Bopp, L. Carroll, A. Cass, S. Chung, M. Donnat, P. Dorsaz, M. Feliks, L. Fluri, J. Jackson, M. Kienzlefocacci, J. Lynch, M. Martin, L. Mathys, P. Negus, L. Perini, R. Poultney, W. Range, L. Rosselet, S. Snow, A. Thompson, R. Turnbull, M. Werlen. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - 41:4(1989), pp. 591-598.
Abstract:
A search for pairs of high pT prompt photons produced in hydrogen by a 280 GeV/c incident π- beam has been carried out using a fine-grained electromagnetic calorimeter and the Omega spectrometer at the CERN SPS. Clear evidence for the existence of such events is found with a six standard deviation signal for pT>3.0 GeV/c. The cross-sections are consistent with beyond leading order QCD calculations. A discussion on the determination of αs is also presented.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
E. Bonvin, R. Bopp, L. Carroll, A. Cass, S. Chung, M. Donnat, P. Dorsaz, M. Feliks, L. Fluri, J. Jackson, M. Kienzlefocacci, J. Lynch, M. Martin, L. Mathys, P. Negus, L. Perini, R. Poultney, W. Range, L. Rosselet, S. Snow, A. Thompson, R. Turnbull, M. Werlen
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