Long-range pseudorapidity dihadron correlations in d plus Au collisions at root S-NN=200 GeV

0447876 - ÚJF 2016 RIV NL eng J - Journal Article
Adamczyk, L. - Bielčík, J. - Bielčíková, Jana - Chaloupka, P. - Federič, Pavol - Rusňák, Jan - Rusňáková, O. - Šimko, Miroslav - Šumbera, Michal - Tlustý, David - Trzeciak, B. A. - Vértési, Robert … Total 335 authors
Long-range pseudorapidity dihadron correlations in d plus Au collisions at root S-NN=200 GeV.
Physics Letters. B. Roč. 747, JUL (2015), s. 265-271. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA ČR GA13-20841S
Institutional support: RVO:61389005
Keywords : STAR collaboration * heavy ion collisions * time projection chamber
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 4.787, year: 2015

Dihadron angular correlations in d + Au collisions at root S-NN = 200 GeV are reported as a function of the measured zero-degree calorimeter neutral energy and the forward charged hadron multiplicity in the Au-beam direction. A finite correlated yield is observed at large relative pseudorapidity (Delta eta) on the near side (i.e. relative azimuth Delta phi similar to 0). This correlated yield as a function of Delta eta appears to scale with the dominant, primarily jet-related, away-side (Delta phi similar to pi) yield. The Fourier coefficients of the Delta phi correlation, V-n = < cosn Delta phi >, have a strong Delta eta dependence. In addition, it is found that V-1 is approximately inversely proportional to the mid-rapidity event multiplicity, while V-2 is independent of it with similar magnitude in the forward (d-going) and backward (Au-going) directions.
Permanent Link: http://hdl.handle.net/11104/0249651