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Suppression of Back-to-Back Hadron Pairs at Forward Rapidity in d+ Au Collisions at sqrt [s_ {NN}]= 200 GeV

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/20561

Suppression of Back-to-Back Hadron Pairs at Forward Rapidity in d+ Au Collisions at sqrt [s_ {NN}]= 200 GeV

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dc.contributor.author Fields, Douglas E.
dc.contributor.author PHENIX Collaboration
dc.contributor.author Brooks, M. L.
dc.contributor.author Butsyk, S.
dc.contributor.author Grim, G.
dc.contributor.author Jiang, X.
dc.contributor.author Kapustinsky, J.
dc.contributor.author Kunde, G. J.
dc.contributor.author Lee, D. M.
dc.contributor.author Leitch, M. J.
dc.contributor.author Liu, H.
dc.contributor.author Liu, M. X.
dc.contributor.author McGaughey, P. L.
dc.contributor.author Sondheim, W. E.
dc.contributor.author Van Hecke, H.W.
dc.contributor.author Bassalleck, B.
dc.contributor.author Malik, M. D.
dc.contributor.author Thomas, T. L.
dc.contributor.author Younus, I.
dc.contributor.author Al-Bataineh, H.
dc.contributor.author Dharmawardane, K.V.
dc.contributor.author Kyle, G. S.
dc.contributor.author Papavassiliou, V.
dc.contributor.author Pate, S. F.
dc.contributor.author Wang, X. R.
dc.date.accessioned 2012-05-14T23:15:06Z
dc.date.available 2012-05-14T23:15:06Z
dc.date.issued 2011-10-21
dc.identifier.citation Physical review letters, 107(17): 1-7 en_US
dc.identifier.uri http://hdl.handle.net/1928/20561
dc.description.abstract Back-to-back hadron pair yields in d+Au and p+p collisions at √sNN=200  GeV were measured with the PHENIX detector at the Relativistic Heavy Ion Collider. Rapidity separated hadron pairs were detected with the trigger hadron at pseudorapidity |η|<0.35 and the associated hadron at forward rapidity (deuteron direction, 3.0<η<3.8). Pairs were also detected with both hadrons measured at forward rapidity; in this case, the yield of back-to-back hadron pairs in d+Au collisions with small impact parameters is observed to be suppressed by a factor of 10 relative to p+p collisions. The kinematics of these pairs is expected to probe partons in the Au nucleus with a low fraction x of the nucleon momenta, where the gluon densities rise sharply. The observed suppression as a function of nuclear thickness, pT, and η points to cold nuclear matter effects arising at high parton densities. en_US
dc.description.sponsorship American Physical Society en_US
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.title Suppression of Back-to-Back Hadron Pairs at Forward Rapidity in d+ Au Collisions at sqrt [s_ {NN}]= 200 GeV en_US
dc.type Article en_US


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