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dc.contributor.authorSTAR Collaboration
dc.date.accessioned 2022-09-29T15:06:30Z
dc.date.available 2022-09-29T15:06:30Z
dc.date.issued 2022
dc.identifier.citation STAR Collaboration. "Evidence for Nonlinear Gluon Effects in QCD and Their Mass Number Dependence at STAR." Physical Review Letters, 129, no. 9 (2022) American Physical Society: https://doi.org/10.1103/PhysRevLett.129.092501.
dc.identifier.urihttps://hdl.handle.net/1911/113435
dc.description.abstract The STAR Collaboration reports measurements of back-to-back azimuthal correlations of di-π0s produced at forward pseudorapidities (2.6<η<4.0) in p+p, p+Al, and p+Au collisions at a center-of-mass energy of 200 GeV. We observe a clear suppression of the correlated yields of back-to-back π0 pairs in p+Al and p+Au collisions compared to the p+p data. The observed suppression of back-to-back pairs as a function of transverse momentum suggests nonlinear gluon dynamics arising at high parton densities. The larger suppression found in p+Au relative to p+Al collisions exhibits a dependence of the saturation scale Q2s on the mass number A. A linear scaling of the suppression with A1/3 is observed with a slope of −0.09±0.01.
dc.language.iso eng
dc.publisher American Physical Society
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.title Evidence for Nonlinear Gluon Effects in QCD and Their Mass Number Dependence at STAR
dc.type Journal article
dc.citation.journalTitle Physical Review Letters
dc.citation.volumeNumber 129
dc.citation.issueNumber 9
dc.identifier.digital PhysRevLett-129-092501
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.129.092501
dc.type.publication publisher version
dc.citation.articleNumber 092501


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