Measurement of single spin asymmetry for direct photon production in pp collisions at 200 GeV/c.

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · AIP Conf. Proc.

DOI:https://doi.org/10.1063/1.48917· OSTI ID:937798

Adams, D L; Akchurin, N; Belikov, N I; Bravar, A; Bystricky, J; Grosnick, D P; Hill, D A; Lopiano, D; Ohashi, Y; Shima, T; Spinka, H; Underwood, D G; Yokosawa, A; CEN-Saclay,

The single spin asymmetry for inclusive direct photon production has been measured using a polarized proton beam of 200 GeV/c with an unpolarized proton target at -0.15<x{sub F}<0.15 and 2.5<p{sub T}<3.1 GeV/c at Fermilab. The measurement was done using lead glass calorimeters and the photon detectors which surround the fiducial area of the calorimeters. Background rejection has been done using the surrounding photon detectors. The single spin asymmetry, AN, for the direct photon production is consistent with zero within experimental uncertainty.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: ER
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 937798
• Report Number(s): ANL/HEP/JA-20266
• Journal Information: AIP Conf. Proc., Journal Name: AIP Conf. Proc. Journal Issue: 1 ; Sep. 1995 Vol. 343; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CALORIMETERS
COLLISIONS
FERMILAB
GLASS
PHOTONS
PRODUCTION
PROTON BEAMS
PROTONS
SPIN
TARGETS