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.
Similar content being viewed by others
References
P. Aurenche et al.: Phys. Lett. 140B (1984) 87; P. Aurenche, R. Baier, M. Fontannaz, D. Schiff: Nucl. Phys. B286 (1987) 509 and preprint LPTHE Orsay 87/30 (May 1987). We thank the authors for allowing us to use their computer program on nextto-leading QCD calculations.
M. McLaughlin et al.: Phys. Rev. Lett. 51 (1983) 971 J. Badier et al.: Z. Phys. C—Particles and Fields 31 (1986) 341; C. DeMarzo et al.: Phys. Rev. D36 (1987) 8
M. Bonesini et al.: High transverse momentum π0 production by π− and π+ on protons at 280 GeV/c. CERN-EP/87-164, submitted to Z. Phys. C
C. Bovet et al.: CERN yellow report 82-13
M. Bonesini et al.: A lead-liquid scintillator electromagnetic calorimeter for direct photon physics: A261 (1987) 471 Nucl. Instrum. Methods
M. Bonesini et al.: A 1152 channel timing system for an electromagnetic calorimeter readout to be published in Nucl. Instrum. Methods
P. Béné et al.: Highp T trigger electronics for a large orthogonal readout electromagnetic calorimeter, submitted to Nucl. Instrum. Methods
J.C. Lassalle, F. Carena, S. Pensotti: Nucl. Instrum. Methods 176 (1980) 371
H.U. Bengtsson, G. Ingelman, T. Sjöstrand: The Lund Monte Carlo for high-p T scattering, PYTHIA version 4.1, update of H.U. Bengtsson, G. Ingelman. Comp. Phys. Commun. 34 (1985) 251; Jet fragmentation, JETSET version 6.2, T. Sjöstrand Com. Phys. Commun 39 (1986) 347
P.M. Stevenson: Phys. Rev. D 23 (1981) 2916; H.D. Politzer: Nucl. Phys. B194 (1982) 493; P. Stevenson, H. Politzer: Nucl. Phys. B277 (1986) 758
D.W. Duke, J.F. Owens: Phys. Rev. D 30 (1984) 49; J.F. Owens: Phys. Rev. D30 (1984) 943
A.P. Contogouris et al.: Phys. Rev. D 32 (1985) 1135
Author information
Authors and Affiliations
Consortia
Rights and permissions
About this article
Cite this article
WA 70-Collaboration., Bonesini, M., Bonvin, E. et al. High transverse momentum prompt photon production by π− and π+ on protons at 280 GeV/c. Z. Phys. C - Particles and Fields 37, 535–544 (1988). https://doi.org/10.1007/BF01549712
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01549712