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

D.L Adams; N Achurin; N.I Belikov; A Bravar; J Bystricky; M.D Corcoran; J.L White; J.D Cossairt; J Cranshaw; A.A Derevschikov; H En'yo; H Funahashi; Y Goto; O.A Grachov; D.P Grosnick; D.A Hill; T Iijima; K Imai; Y Itow; K Iwatani; K.W Krueger; K Kuroda; F Lehar; A de Lesquen; D Lopiano; F.C Luehring; T Maki; S Makino; A Masaike; Yu.A Matulenko; A.P Meschanin; A Michalowicz; D.H Miller; K Miyake; T Nagamine; F Nessi-Tedaldi; M Nessi; C Nguyen; S.B Nurushev; Y Ohashi; Y Onel; D.I Patalakha; G Pauletta; A Penzo; A.L Read; J.B Roberts; L van Rossum; V.L Rykov; N Saito; G Salvato; P Schiavon; T Shima; J Skeens; V.L Solovyanov; H Spinka; R Takashima; F Takeutchi; N Tamura; N Tanaka; D.G Underwood; A.N Vasiliev; A Villari; S Yamashita; A Yokosawa; T Yoshida; A Zanetti; FNAL E704 Collaboration

doi:10.1016/0370-2693(94)01695-9

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

Journal article

Peer reviewed

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

D.L Adams, N Achurin, N.I Belikov, A Bravar, J Bystricky, M.D Corcoran, J.L White, J.D Cossairt, J Cranshaw, A.A Derevschikov, …

Physics letters. B, Vol.345(4), pp.569-575

1995

DOI: 10.1016/0370-2693(94)01695-9

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Abstract

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 < xf < 0.15 and 2.5 < pt < 3.1 GeV/c at Fermilab. The data on the cross section for pp → γX at 2.5 < pt < 3.8 GeV/c are also provided. The measurement was done using lead-glass calorimeters and photon detectors which surrounded the fiducial area of the calorimeters. Background rejection has been done using these surrounding photon detectors. The cross section obtained is consistent with the results of previous measurements assuming a nuclear dependence of A1.0. The single spin asymmetry, AN, for the direct-photon production is consistent with zero within experimental uncertainty.

Details

Title: Subtitle: Measurement of single spin asymmetry for direct photon production in pp collisions at 200 GeV/c
Creators: D.L Adams - Rice University
N Achurin - University of Iowa
N.I Belikov - Institute for High Energy Physics, 142284, Protvino, Russia
A Bravar - Dipartimento di Fisica, Universita di Trieste, 1-34100 Trieste, Italy
J Bystricky - CEN-Saclay, F-91191 Gif-sur-Yvette, France
M.D Corcoran - Rice University
J.L White - Rice University
J.D Cossairt - Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
J Cranshaw - Rice University
A.A Derevschikov - Institute for High Energy Physics, 142284, Protvino, Russia
H En'yo - Kyoto University
H Funahashi - Kyoto University
Y Goto - Kyoto University
O.A Grachov - Institute for High Energy Physics, 142284, Protvino, Russia
D.P Grosnick - Argonne National Laboratory
D.A Hill - Argonne National Laboratory
T Iijima - Kyoto University
K Imai - Kyoto University
Y Itow - Kyoto University
K Iwatani - Hiroshima University
K.W Krueger - Northeastern State University, OK 74464, USA
K Kuroda - Laboratoire de Physique des Particules, B. P. 909, F-74017 Annecy-le-Vieux, France
F Lehar - CEN-Saclay, F-91191 Gif-sur-Yvette, France
A de Lesquen - CEN-Saclay, F-91191 Gif-sur-Yvette, France
D Lopiano - Argonne National Laboratory
F.C Luehring - Northwestern University
T Maki - University of Occupational and Environmental Health, Kita-Kyushu 807, Japan
S Makino - Kyoto University
A Masaike - Kyoto University
Yu.A Matulenko - Institute for High Energy Physics, 142284, Protvino, Russia
A.P Meschanin - Institute for High Energy Physics, 142284, Protvino, Russia
A Michalowicz - Laboratoire de Physique des Particules, B. P. 909, F-74017 Annecy-le-Vieux, France
D.H Miller - Northwestern University
K Miyake - Kyoto University
T Nagamine - Kyoto University
F Nessi-Tedaldi - Rice University
M Nessi - Rice University
C Nguyen - Rice University
S.B Nurushev - Institute for High Energy Physics, 142284, Protvino, Russia
Y Ohashi - Argonne National Laboratory
Y Onel - University of Iowa
D.I Patalakha - Institute for High Energy Physics, 142284, Protvino, Russia
G Pauletta - University of Udine
A Penzo - University of Trieste
A.L Read - Fermi National Accelerator Laboratory
J.B Roberts - Rice University
L van Rossum - Fermi National Accelerator Laboratory
V.L Rykov - Institute for High Energy Physics, 142284, Protvino, Russia
N Saito - Kyoto University
G Salvato - University of Messina
P Schiavon - University of Trieste
T Shima - Argonne National Laboratory
J Skeens - Rice University
V.L Solovyanov - Institute for High Energy Physics, 142284, Protvino, Russia
H Spinka - Argonne National Laboratory
R Takashima - Kyoto University
F Takeutchi - Kyoto Sangyo University
N Tamura - Okayama University
N Tanaka - Los Alamos National Laboratory
D.G Underwood - Argonne National Laboratory
A.N Vasiliev - Institute for High Energy Physics, 142284, Protvino, Russia
A Villari - Dipartimento di Fisica, Universita di Messina, 1-98100 Messica, Italy
S Yamashita - Kyoto University
A Yokosawa - Argonne National Laboratory
T Yoshida - Osaka City University
A Zanetti - University of Trieste
FNAL E704 Collaboration
Resource Type: Journal article
Publication Details: Physics letters. B, Vol.345(4), pp.569-575
DOI: 10.1016/0370-2693(94)01695-9
ISSN: 0370-2693
eISSN: 1873-2445
Publisher: Elsevier B.V
Language: English
Date published: 1995
Academic Unit: Physics and Astronomy
Record Identifier: 9984199763802771

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