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U.S. Department of Energy
Office of Scientific and Technical Information

Measurement of. mu. /sup 0/, eta, and direct photon production at high transverse momentum

Thesis/Dissertation ·
OSTI ID:6235323
The high-p/sub perpendicular/ inclusive cross sections for ..pi../sup 0/ and eta production near 90/sup 0/ in the center of mass in 200 GeV/c ..pi../sup +/ and proton collisions with beryllium, carbon, and aluminum targets have been measured. The cross section for both ..pi../sup 0/ and eta mesons rises with increasing nucleon number (A) of the target nucleus as A/sup ..cap alpha../, with ..cap alpha.. > 1. The ratio for the ..pi../sup 0/ yield in pA collisions to that in ..pi../sup +/A collisions decreases with increasing p/sub perpendicular/ the inclusive production of direct photons in the p/sub perpendicular/ range 2.1-5.0 GeV/c for the same interactions have been measured. A significantly yield of direct photons in pC and ..pi../sup +/C collisions for p/sub perpendicular/ > 2.5 GeV/c is observed.
Research Organization:
Rochester Univ., NY (USA)
OSTI ID:
6235323
Country of Publication:
United States
Language:
English