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Measurement of the cross section and longitudinal double-spin asymmetry for dijet production in polarized pp collisions at s =200 GeV

Adamczyk, L.
•
Adkins, J. K.
•
Agakishiev, G.
altro
Zyzak, M.
2017
  • journal article

Periodico
PHYSICAL REVIEW D
Abstract
We report the first measurement of the longitudinal double-spin asymmetry ALL for midrapidity dijet production in polarized pp collisions at a center-of-mass energy of s=200 GeV. The dijet cross section was measured and is shown to be consistent with next-to-leading order (NLO) perturbative QCD predictions. ALL results are presented for two distinct topologies, defined by the jet pseudorapidities, and are compared to predictions from several recent NLO global analyses. The measured asymmetries, the first such correlation measurements, support those analyses that find positive gluon polarization at the level of roughly 0.2 over the region of Bjorken-x>0.05.
DOI
10.1103/PhysRevD.95.071103
WOS
WOS:000400254500001
Archivio
http://hdl.handle.net/11368/2941708
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85019603349
http://harvest.aps.org/bagit/articles/10.1103/PhysRevD.95.071103/apsxml
Diritti
closed access
license:copyright editore
FVG url
https://arts.units.it/request-item?handle=11368/2941708
Soggetti
  • jet

  • heavy ion

  • quark gluon plasma

  • RHIC

  • STAR

Scopus© citazioni
25
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
23
Data di acquisizione
Mar 20, 2024
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