Charge-Dependent Directed Flow in Cu+Au Collisions at sNN =200 GeV

(STAR Collaboration)

doi:10.1103/PhysRevLett.118.012301

Charge-Dependent Directed Flow in Cu+Au Collisions at sNN =200 GeV

(STAR Collaboration)

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
Moscow Engineering Physics Institute
Texas A&M University
Brookhaven National Laboratory
Tsinghua University
Central China Normal University
National Institute of Science Education and Research
University of Houston
University of Jammu
University of Texas at Austin
Czech Technical University in Prague
Czech Academy of Sciences
Kent State University
Rice University
Yale University
University of California at Davis
Ohio State University
Chinese Academy of Sciences
Creighton University
Lawrence Berkeley National Laboratory
University of California at Berkeley
Institute of Physics

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

35 Scopus citations

Abstract

We present the first measurement of charge-dependent directed flow in Cu+Au collisions at sNN=200 GeV. The results are presented as a function of the particle transverse momentum and pseudorapidity for different centralities. A finite difference between the directed flow of positive and negative charged particles is observed that qualitatively agrees with the expectations from the effects of the initial strong electric field between two colliding ions with different nuclear charges. The measured difference in directed flow is much smaller than that obtained from the parton-hadron-string-dynamics model, which suggests that most of the electric charges, i.e., quarks and antiquarks, have not yet been created during the lifetime of the strong electric field, which is of the order of, or less than, 1 fm/c.

Original language	English
Article number	012301
Journal	Physical Review Letters
Volume	118
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.118.012301
State	Published - Jan 5 2017

Access to Document

10.1103/PhysRevLett.118.012301

Cite this

@article{52f40443611c4f3196e130c8adef6c04,

title = "Charge-Dependent Directed Flow in Cu+Au Collisions at sNN =200 GeV",

abstract = "We present the first measurement of charge-dependent directed flow in Cu+Au collisions at sNN=200 GeV. The results are presented as a function of the particle transverse momentum and pseudorapidity for different centralities. A finite difference between the directed flow of positive and negative charged particles is observed that qualitatively agrees with the expectations from the effects of the initial strong electric field between two colliding ions with different nuclear charges. The measured difference in directed flow is much smaller than that obtained from the parton-hadron-string-dynamics model, which suggests that most of the electric charges, i.e., quarks and antiquarks, have not yet been created during the lifetime of the strong electric field, which is of the order of, or less than, 1 fm/c.",

author = "\{(STAR Collaboration)\} and L. Adamczyk and Adkins, \{J. K.\} and G. Agakishiev and Aggarwal, \{M. M.\} and Z. Ahammed and I. Alekseev and Anderson, \{D. M.\} and R. Aoyama and A. Aparin and D. Arkhipkin and Aschenauer, \{E. C.\} and Ashraf, \{M. U.\} and A. Attri and Averichev, \{G. S.\} and X. Bai and V. Bairathi 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 Brandenburg, \{J. D.\} and Brandin, \{A. V.\} and I. Bunzarov and J. Butterworth and H. Caines and \{Calder{\'o}n De La Barca S{\'a}nchez\}, M. and Campbell, \{J. M.\} and D. Cebra and I. Chakaberia and P. Chaloupka and Z. Chang and A. Chatterjee and S. Chattopadhyay and X. Chen and Chen, \{J. H.\} and J. Cheng and M. Cherney and W. Christie and G. Contin and Crawford, \{H. J.\} and S. Das and \{De Silva\}, \{L. C.\} and Debbe, \{R. R.\} and R. Esha and J. Jia",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = jan,

day = "5",

doi = "10.1103/PhysRevLett.118.012301",

language = "English",

volume = "118",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "1",

}

TY - JOUR

T1 - Charge-Dependent Directed Flow in Cu+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 - Anderson, D. M.

AU - Aoyama, R.

AU - Aparin, A.

AU - Arkhipkin, D.

AU - Aschenauer, E. C.

AU - Ashraf, M. U.

AU - Attri, A.

AU - Averichev, G. S.

AU - Bai, X.

AU - Bairathi, V.

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 - Brandenburg, J. D.

AU - Brandin, A. V.

AU - Bunzarov, I.

AU - Butterworth, J.

AU - Caines, H.

AU - Calderón De La Barca Sánchez, M.

AU - Campbell, J. M.

AU - Cebra, D.

AU - Chakaberia, I.

AU - Chaloupka, P.

AU - Chang, Z.

AU - Chatterjee, A.

AU - Chattopadhyay, S.

AU - Chen, X.

AU - Chen, J. H.

AU - Cheng, J.

AU - Cherney, M.

AU - Christie, W.

AU - Contin, G.

AU - Crawford, H. J.

AU - Das, S.

AU - De Silva, L. C.

AU - Debbe, R. R.

AU - Esha, R.

AU - Jia, J.

PY - 2017/1/5

Y1 - 2017/1/5

N2 - We present the first measurement of charge-dependent directed flow in Cu+Au collisions at sNN=200 GeV. The results are presented as a function of the particle transverse momentum and pseudorapidity for different centralities. A finite difference between the directed flow of positive and negative charged particles is observed that qualitatively agrees with the expectations from the effects of the initial strong electric field between two colliding ions with different nuclear charges. The measured difference in directed flow is much smaller than that obtained from the parton-hadron-string-dynamics model, which suggests that most of the electric charges, i.e., quarks and antiquarks, have not yet been created during the lifetime of the strong electric field, which is of the order of, or less than, 1 fm/c.

AB - We present the first measurement of charge-dependent directed flow in Cu+Au collisions at sNN=200 GeV. The results are presented as a function of the particle transverse momentum and pseudorapidity for different centralities. A finite difference between the directed flow of positive and negative charged particles is observed that qualitatively agrees with the expectations from the effects of the initial strong electric field between two colliding ions with different nuclear charges. The measured difference in directed flow is much smaller than that obtained from the parton-hadron-string-dynamics model, which suggests that most of the electric charges, i.e., quarks and antiquarks, have not yet been created during the lifetime of the strong electric field, which is of the order of, or less than, 1 fm/c.

UR - https://www.scopus.com/pages/publications/85009499869

U2 - 10.1103/PhysRevLett.118.012301

DO - 10.1103/PhysRevLett.118.012301

M3 - Article

C2 - 28106415

AN - SCOPUS:85009499869

SN - 0031-9007

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

IS - 1

M1 - 012301

ER -

Charge-Dependent Directed Flow in Cu+Au Collisions at sNN =200 GeV

Abstract

Access to Document

Other files and links

Fingerprint

Cite this