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

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 (US)
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

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2015.05.075

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@article{1287a18d7cf34a8191bb34faaf4d1b69,

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 S. Heppelmann",

year = "2015",

month = jul,

day = "1",

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

language = "English (US)",

volume = "747",

pages = "265--271",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

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 - Heppelmann, S.

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

UR - https://www.scopus.com/pages/publications/84930936848#tab=citedBy

U2 - 10.1016/j.physletb.2015.05.075

DO - 10.1016/j.physletb.2015.05.075

M3 - Article

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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