Measurement of forward-backward multiplicity correlations in lead-lead, proton-lead, and proton-proton collisions with the ATLAS detector. / The ATLAS Collaboration.

In: Physical Review C, Vol. 95, No. 6, 064914, 28.06.2017, p. 1-30.

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Measurement of forward-backward multiplicity correlations in lead-lead, proton-lead, and proton-proton collisions with the ATLAS detector. / The ATLAS Collaboration.

In: Physical Review C, Vol. 95, No. 6, 064914, 28.06.2017, p. 1-30.

Research output: Contribution to journalArticlepeer-review

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@article{94d88b62f80c43408f50d2b5455d860e,
title = "Measurement of forward-backward multiplicity correlations in lead-lead, proton-lead, and proton-proton collisions with the ATLAS detector",
abstract = "Two-particle pseudorapidity correlations are measured in √sNN = 2.76 TeV Pb+Pb, √sNN = 5.02 TeV p+Pb, and √s = 13 TeV pp collisions at the Large Hadron Collider (LHC), with total integrated luminosities of approximately 7μb−1, 28 nb−1, and 65 nb−1, respectively. The correlation function CN (η1,η2) is measured as a function of event multiplicity using charged particles in the pseudorapidity range |η|<2.4. The correlation function contains a significant short-range component, which is estimated and subtracted. After removal of the short-range component, the shape of the correlation function is described approximately by 1+⟨a21⟩1/2η1η2 in all collision systems over the full multiplicity range. The values of ⟨a21⟩1/2 are consistent for the opposite-charge pairs and same-charge pairs, and for the three collision systems at similar multiplicity. The values of ⟨a21⟩1/2 and the magnitude of the short-range component both follow a power-law dependence on the event multiplicity. The short-range component in p + Pb collisions, after symmetrizing the proton and lead directions, is found to be smaller at a given η than in pp collisions with comparable multiplicity.",
author = "{The ATLAS Collaboration}",
year = "2017",
month = jun,
day = "28",
doi = "10.1103/PhysRevC.95.064914",
language = "English",
volume = "95",
pages = "1--30",
journal = "Physical Review C",
issn = "0556-2813",
publisher = "American Physical Society",
number = "6",

}

RIS

TY - JOUR

T1 - Measurement of forward-backward multiplicity correlations in lead-lead, proton-lead, and proton-proton collisions with the ATLAS detector

AU - The ATLAS Collaboration

PY - 2017/6/28

Y1 - 2017/6/28

N2 - Two-particle pseudorapidity correlations are measured in √sNN = 2.76 TeV Pb+Pb, √sNN = 5.02 TeV p+Pb, and √s = 13 TeV pp collisions at the Large Hadron Collider (LHC), with total integrated luminosities of approximately 7μb−1, 28 nb−1, and 65 nb−1, respectively. The correlation function CN (η1,η2) is measured as a function of event multiplicity using charged particles in the pseudorapidity range |η|<2.4. The correlation function contains a significant short-range component, which is estimated and subtracted. After removal of the short-range component, the shape of the correlation function is described approximately by 1+⟨a21⟩1/2η1η2 in all collision systems over the full multiplicity range. The values of ⟨a21⟩1/2 are consistent for the opposite-charge pairs and same-charge pairs, and for the three collision systems at similar multiplicity. The values of ⟨a21⟩1/2 and the magnitude of the short-range component both follow a power-law dependence on the event multiplicity. The short-range component in p + Pb collisions, after symmetrizing the proton and lead directions, is found to be smaller at a given η than in pp collisions with comparable multiplicity.

AB - Two-particle pseudorapidity correlations are measured in √sNN = 2.76 TeV Pb+Pb, √sNN = 5.02 TeV p+Pb, and √s = 13 TeV pp collisions at the Large Hadron Collider (LHC), with total integrated luminosities of approximately 7μb−1, 28 nb−1, and 65 nb−1, respectively. The correlation function CN (η1,η2) is measured as a function of event multiplicity using charged particles in the pseudorapidity range |η|<2.4. The correlation function contains a significant short-range component, which is estimated and subtracted. After removal of the short-range component, the shape of the correlation function is described approximately by 1+⟨a21⟩1/2η1η2 in all collision systems over the full multiplicity range. The values of ⟨a21⟩1/2 are consistent for the opposite-charge pairs and same-charge pairs, and for the three collision systems at similar multiplicity. The values of ⟨a21⟩1/2 and the magnitude of the short-range component both follow a power-law dependence on the event multiplicity. The short-range component in p + Pb collisions, after symmetrizing the proton and lead directions, is found to be smaller at a given η than in pp collisions with comparable multiplicity.

U2 - 10.1103/PhysRevC.95.064914

DO - 10.1103/PhysRevC.95.064914

M3 - Article

VL - 95

SP - 1

EP - 30

JO - Physical Review C

JF - Physical Review C

SN - 0556-2813

IS - 6

M1 - 064914

ER -