Dijet imbalance measurements in Au+Au and pp collisions at sNN =200 GeV at STAR

STAR Collaboration

doi:10.1103/PhysRevLett.119.062301

Dijet imbalance measurements in Au+Au and pp collisions at sNN =200 GeV at STAR

STAR Collaboration

Physics

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

45 Scopus citations

Abstract

We report the first dijet transverse momentum asymmetry measurements from Au+Au and pp collisions at RHIC. The two highest-energy back-to-back jets reconstructed from fragments with transverse momenta above 2 GeV/c display a significantly higher momentum imbalance in heavy-ion collisions than in the pp reference. When reexamined with correlated soft particles included, we observe that these dijets then exhibit a unique new feature - momentum balance is restored to that observed in pp for a jet resolution parameter of R=0.4, while rebalancing is not attained with a smaller value of R=0.2.

Original language	English (US)
Article number	062301
Journal	Physical review letters
Volume	119
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.119.062301
State	Published - Aug 10 2017

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.119.062301

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@article{d8ab826d85d64448bd2d6671617bb64c,

title = "Dijet imbalance measurements in Au+Au and pp collisions at sNN =200 GeV at STAR",

abstract = "We report the first dijet transverse momentum asymmetry measurements from Au+Au and pp collisions at RHIC. The two highest-energy back-to-back jets reconstructed from fragments with transverse momenta above 2 GeV/c display a significantly higher momentum imbalance in heavy-ion collisions than in the pp reference. When reexamined with correlated soft particles included, we observe that these dijets then exhibit a unique new feature - momentum balance is restored to that observed in pp for a jet resolution parameter of R=0.4, while rebalancing is not attained with a smaller value of R=0.2.",

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 D. Brown 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 Chen, \{J. H.\} and X. Chen 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 S. Heppelmann",

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

year = "2017",

month = aug,

day = "10",

doi = "10.1103/PhysRevLett.119.062301",

language = "English (US)",

volume = "119",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "6",

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TY - JOUR

T1 - Dijet imbalance measurements in Au+Au and pp collisions at sNN =200 GeV at STAR

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 - Brown, D.

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, J. H.

AU - Chen, X.

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 - Heppelmann, S.

PY - 2017/8/10

Y1 - 2017/8/10

N2 - We report the first dijet transverse momentum asymmetry measurements from Au+Au and pp collisions at RHIC. The two highest-energy back-to-back jets reconstructed from fragments with transverse momenta above 2 GeV/c display a significantly higher momentum imbalance in heavy-ion collisions than in the pp reference. When reexamined with correlated soft particles included, we observe that these dijets then exhibit a unique new feature - momentum balance is restored to that observed in pp for a jet resolution parameter of R=0.4, while rebalancing is not attained with a smaller value of R=0.2.

AB - We report the first dijet transverse momentum asymmetry measurements from Au+Au and pp collisions at RHIC. The two highest-energy back-to-back jets reconstructed from fragments with transverse momenta above 2 GeV/c display a significantly higher momentum imbalance in heavy-ion collisions than in the pp reference. When reexamined with correlated soft particles included, we observe that these dijets then exhibit a unique new feature - momentum balance is restored to that observed in pp for a jet resolution parameter of R=0.4, while rebalancing is not attained with a smaller value of R=0.2.

UR - https://www.scopus.com/pages/publications/85027979960

UR - https://www.scopus.com/pages/publications/85027979960#tab=citedBy

U2 - 10.1103/PhysRevLett.119.062301

DO - 10.1103/PhysRevLett.119.062301

M3 - Article

C2 - 28949601

AN - SCOPUS:85027979960

SN - 0031-9007

VL - 119

JO - Physical review letters

JF - Physical review letters

IS - 6

M1 - 062301

ER -

Dijet imbalance measurements in Au+Au and pp collisions at sNN =200 GeV at STAR

Abstract

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