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High transverse momentum prompt photon production by π− and π+ on protons at 280 GeV/c |
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| Authors: | M. Bonesini E. Bonvin P. S. L. Boóth D. Bortoletto L. J. Carroll A. J. Cass D. Cavalli G. Costa M. Donnat P. A. Dorsaz D. N. Edwards J. R. Fischer L. Fluri D. Frame F. Gianotti S. Jack J. N. Jackson M. Kelly M. N. Kienzle-Focacci R. Lucock J. G. Lynch L. Mandelli M. Martin L. Mathys A. Maxwell M. Mazzanti J. J. Myerscough P. J. Negus S. Pensotti-Rancoita L. Perini D. Perrin G. Polesello W. H. Range L. Rosselet S. W. Snow M. Tamborini A. S. Thompson R. M. Turnbull J. Wells M. Werlen WA -Collaboration |
| Affiliation: | 1. Dipartimento di Fisica dell'Università e Sezione INFN Milano, I-20133, Milano, Italy 2. University of Neuchatel, CH-2000, Neuchate, Switzerland 3. Dept. of Physics, University of Liverpool, L69 3BX, Liverpool, UK 4. University of Geneva, D.P.N.C., CH-1211, Geneva, Switzerland 5. Dept. of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK 6. CERN, CH-1211, Geneva 23, Switzerland |
| Abstract: | The inclusive cross sections for prompt photon production by π? and π+ on protons have been measured with a beam momentum of 280 GeV/c using a fine grained electromagnetic calorimeter and the CERN Omega spectrometer. The transverse momentum and Feynmanx F ranges covered are 4.0<p T <7.0GeV/c and ?0.45<x F <0.55 respectively. A quantitative comparison of the prompt photon cross section with next-to-leading order QCD predictions using Duke and Owens structure functions is performed. |
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