Long-range pseudorapidity dihadron correlations in d + Au collisions at √sNN = 200 GeV

STAR Collaboration

doi:10.1016/j.physletb.2015.05.075

Long-range pseudorapidity dihadron correlations in d + Au collisions at √sNN = 200 GeV

STAR Collaboration

Physics and Astronomy

AGH University of Krakow
University of Kentucky
Joint Institute for Nuclear Research
Panjab University
Variable Energy Cyclotron Centre India
Alikhanov Institute for Theoretical and Experimental Physics
Kent State University
Brookhaven National Laboratory
University of Houston
University of Jammu
University of Texas at Austin
Czech Technical University in Prague
Czech Academy of Sciences
Moscow Engineering Physics Institute
Rice University
Yale University
University of California at Davis
Ohio State University
Texas A&M University
Chinese Academy of Sciences
Institute of Modern Physics
Tsinghua University
Creighton University
Lawrence Berkeley National Laboratory
University of California at Berkeley
Institute of Physics
Shandong University
Institute for High Energy Physics

Research output: Contribution to journal › Article › peer-review

96 Scopus citations

Abstract

Dihadron angular correlations in d + Au collisions at √sNN = 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 (δη) on the near side (i.e. relative azimuth δϕ~0). This correlated yield as a function of δη appears to scale with the dominant, primarily jet-related, away-side (δϕ~π) yield. The Fourier coefficients of the δϕ correlation, V_n=〈cos n δ ϕ〉, have a strong δη dependence. In addition, it is found that V₁ is approximately inversely proportional to the mid-rapidity event multiplicity, while V₂ is independent of it with similar magnitude in the forward (d-going) and backward (Au-going) directions.

Original language	English
Pages (from-to)	265-271
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	747
DOIs	https://doi.org/10.1016/j.physletb.2015.05.075
State	Published - Jul 1 2015

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10.1016/j.physletb.2015.05.075

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@article{4ba7110041814065922437fb19adf489,

title = "Long-range pseudorapidity dihadron correlations in d + Au collisions at √sNN = 200 GeV",

abstract = "Dihadron angular correlations in d + Au collisions at √sNN = 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 (δη) on the near side (i.e. relative azimuth δϕ\textasciitilde{}0). This correlated yield as a function of δη appears to scale with the dominant, primarily jet-related, away-side (δϕ\textasciitilde{}π) yield. The Fourier coefficients of the δϕ correlation, Vn=〈cos n δ ϕ〉, have a strong δη dependence. In addition, it is found that V1 is approximately inversely proportional to the mid-rapidity event multiplicity, while V2 is independent of it with similar magnitude in the forward (d-going) and backward (Au-going) directions.",

author = "\{STAR Collaboration\} and L. Adamczyk and Adkins, \{J. K.\} and G. Agakishiev and Aggarwal, \{M. M.\} and Z. Ahammed and I. Alekseev and J. Alford and A. Aparin and D. Arkhipkin and Aschenauer, \{E. C.\} and Averichev, \{G. S.\} and A. Banerjee and R. Bellwied and A. Bhasin and Bhati, \{A. K.\} and P. Bhattarai and J. Bielcik and J. Bielcikova and Bland, \{L. C.\} and Bordyuzhin, \{I. G.\} and J. Bouchet and Brandin, \{A. V.\} and I. Bunzarov and Burton, \{T. P.\} and J. Butterworth and H. Caines and \{Calder'on de la Barca S'anchez\}, M. and Campbell, \{J. M.\} and D. Cebra and Cervantes, \{M. C.\} and I. Chakaberia and P. Chaloupka and Z. Chang and S. Chattopadhyay and Chen, \{J. H.\} and X. Chen and J. Cheng and M. Cherney and W. Christie and Codrington, \{M. J.M.\} and G. Contin and Crawford, \{H. J.\} and S. Das and \{De Silva\}, \{L. C.\} and Debbe, \{R. R.\} and Dedovich, \{T. G.\} and J. Deng and Derevschikov, \{A. A.\} and \{di Ruzza\}, B. and R. Esha",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors.",

year = "2015",

month = jul,

day = "1",

doi = "10.1016/j.physletb.2015.05.075",

language = "English",

volume = "747",

pages = "265--271",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

}

TY - JOUR

T1 - Long-range pseudorapidity dihadron correlations in d + Au collisions at √sNN = 200 GeV

AU - STAR Collaboration

AU - Adamczyk, L.

AU - Adkins, J. K.

AU - Agakishiev, G.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Alekseev, I.

AU - Alford, J.

AU - Aparin, A.

AU - Arkhipkin, D.

AU - Aschenauer, E. C.

AU - Averichev, G. S.

AU - Banerjee, A.

AU - Bellwied, R.

AU - Bhasin, A.

AU - Bhati, A. K.

AU - Bhattarai, P.

AU - Bielcik, J.

AU - Bielcikova, J.

AU - Bland, L. C.

AU - Bordyuzhin, I. G.

AU - Bouchet, J.

AU - Brandin, A. V.

AU - Bunzarov, I.

AU - Burton, T. P.

AU - Butterworth, J.

AU - Caines, H.

AU - Calder'on de la Barca S'anchez, M.

AU - Campbell, J. M.

AU - Cebra, D.

AU - Cervantes, M. C.

AU - Chakaberia, I.

AU - Chaloupka, P.

AU - Chang, Z.

AU - Chattopadhyay, S.

AU - Chen, J. H.

AU - Chen, X.

AU - Cheng, J.

AU - Cherney, M.

AU - Christie, W.

AU - Codrington, M. J.M.

AU - Contin, G.

AU - Crawford, H. J.

AU - Das, S.

AU - De Silva, L. C.

AU - Debbe, R. R.

AU - Dedovich, T. G.

AU - Deng, J.

AU - Derevschikov, A. A.

AU - di Ruzza, B.

AU - Esha, R.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Dihadron angular correlations in d + Au collisions at √sNN = 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 (δη) on the near side (i.e. relative azimuth δϕ~0). This correlated yield as a function of δη appears to scale with the dominant, primarily jet-related, away-side (δϕ~π) yield. The Fourier coefficients of the δϕ correlation, Vn=〈cos n δ ϕ〉, have a strong δη dependence. In addition, it is found that V1 is approximately inversely proportional to the mid-rapidity event multiplicity, while V2 is independent of it with similar magnitude in the forward (d-going) and backward (Au-going) directions.

AB - Dihadron angular correlations in d + Au collisions at √sNN = 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 (δη) on the near side (i.e. relative azimuth δϕ~0). This correlated yield as a function of δη appears to scale with the dominant, primarily jet-related, away-side (δϕ~π) yield. The Fourier coefficients of the δϕ correlation, Vn=〈cos n δ ϕ〉, have a strong δη dependence. In addition, it is found that V1 is approximately inversely proportional to the mid-rapidity event multiplicity, while V2 is independent of it with similar magnitude in the forward (d-going) and backward (Au-going) directions.

UR - https://www.scopus.com/pages/publications/84930936848

U2 - 10.1016/j.physletb.2015.05.075

DO - 10.1016/j.physletb.2015.05.075

M3 - Article

AN - SCOPUS:84930936848

SN - 0370-2693

VL - 747

SP - 265

EP - 271

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Long-range pseudorapidity dihadron correlations in d + Au collisions at √sNN = 200 GeV

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