Single-spin asymmetries and invariant cross sections of the high transverse-momentum inclusive {pi}{sup 0} production in 200 GeV/c {ital pp} and {ital {bar p}}{ital p} interactions

D.L Adams; N Akchurin; N.I Belikov; A Bravar; J Bystricky; M.D Corcoran; J.D Cossairt; J Cranshaw; A.A Derevschikov; H En`yo; H Funahashi; Y Goto; O.A Grachov; D.P Grosnick; D.A Hill; K Imai; Y Itow; K Iwatani; K.W Krueger; K Kuroda; M Laghai; F Lehar; A de Lesquen; D Lopiano; F.C Luehring; T Maki; S Makino; A Masaike; Y.A Matulenko; A.P Meschanin; FNAL E704 Collaborators

doi:10.1063/1.48873

Conference proceeding

Single-spin asymmetries and invariant cross sections of the high transverse-momentum inclusive {pi}{sup 0} production in 200 GeV/c {ital pp} and {ital {bar p}}{ital p} interactions

D.L Adams, N Akchurin, N.I Belikov, A Bravar, J Bystricky, M.D Corcoran, J.D Cossairt, J Cranshaw, A.A Derevschikov, H En`yo, …

AIP Conference Proceedings, Vol.343(1), 422

09/01/1995

DOI: 10.1063/1.48873

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Abstract

The {pi}{sup 0} inclusive and semi-inclusive, single-spin asymmetries have been measured using transversely-polarized, 200-GeV/c proton and antiproton beams colliding with an unpolarized hydrogen target. The measured asymmetries are consistent with a value of zero within the error bars for the kinematic regions, -0.15{much_gt}{ital x}{sub {ital F}}{much_gt}+0.15 and 1{much_gt}{ital p}{sub {ital T}}{much_gt}4.5 GeV/c. These data indicate that the higher-twist contribution in QCD to the single-spin asymmetry in inclusive {pi}{sup 0} production may not be as large as was previously expected. Additional evidence for such a conclusion comes from the measurement of a semi-inclusive {pi}{sup 0}-charged particle asymmetry, where the associated charged particles are detected opposite to the {pi}{sup 0} azimuthal direction. This experiment also has a high-statistics measurement of the inclusive {pi}{sup 0} cross sections for {ital pp} and {ital {bar p}}{ital p} collisions at 200 GeV/c. {copyright} {ital 1995 American Institute of Physics.}

Physics

GEV RANGE 100-1000

INCLUSIVE INTERACTIONS

PARTICLE PRODUCTION

PIONS NEUTRAL

POLARIZATION-ASYMMETRY RATIO

PROTON-ANTIPROTON INTERACTIONS

PROTON-PROTON INTERACTIONS

Details

Title: Subtitle: Single-spin asymmetries and invariant cross sections of the high transverse-momentum inclusive {pi}{sup 0} production in 200 GeV/c {ital pp} and {ital {bar p}}{ital p} interactions
Creators: D.L Adams - Rice University
N Akchurin - University of Iowa
N.I Belikov - Institute for High Energy Physics, 142284, Protvino (Russia)
A Bravar - Dipartimento di Fisica, Universita di Trieste, I-34100 Trieste (Italy)
J Bystricky - CEN-Saclay, F-91191 Gif-sur-Yvette (France)
M.D Corcoran - Rice University
J.D Cossairt - Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
J Cranshaw - Rice University
A.A Derevschikov - Institute for High Energy Physics, 142284, Protvino (Russia)
H En`yo
H Funahashi
Y Goto - Kyoto University
O.A Grachov - Institute of High Energy Physics, 142284, Protvino (Russia)
D.P Grosnick
D.A Hill - Argonne National Laboratory
K Imai
Y Itow - Kyoto University
K Iwatani - Hiroshima University
K.W Krueger - Northeastern State University, Talequah, Oklahoma 74464 (United States)
K Kuroda - Laboratoire de Physique des Particules, B.P. 909, F-74017 Annecy-le-Vieux (France)
M Laghai - Argonne National Laboratory
F Lehar
A de Lesquen - CEN-Saclay, F-91191 Gif-sur-Yvette (France)
D Lopiano - Argonne National Laboratory
F.C Luehring - Physics Department, Northwestern University, Evanston, Illinois 60201 (United States)
T Maki - University of Occupational and Environmental Health, Kita-Kyushu 807 (Japan)
S Makino
A Masaike - Kyoto University
Y.A Matulenko
A.P Meschanin
FNAL E704 Collaborators
Contributors: Yasar Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Conference proceeding
Publication Details: AIP Conference Proceedings, Vol.343(1), 422
DOI: 10.1063/1.48873
Language: English
Date published: 09/01/1995
Academic Unit: Physics and Astronomy
Record Identifier: 9984199825202771

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