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Measurement of W± boson production in Pb+Pb collisions at √sNN=5.02Te with the ATLAS detector

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Measurement of W± boson production in Pb+Pb collisions at √sNN=5.02Te with the ATLAS detector. / Collaboration, ATLAS; Barton, A.E.; Bertram, I.A. et al.
In: European Physical Journal D, Vol. 79, No. 11, 935, 01.11.2019.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Collaboration ATLAS, Barton AE, Bertram IA, Borissov G, Bouhova-Thacker EV, Fox H et al. Measurement of W± boson production in Pb+Pb collisions at √sNN=5.02Te with the ATLAS detector. European Physical Journal D. 2019 Nov 1;79(11):935. doi: 10.1140/epjc/s10052-019-7439-3

Author

Collaboration, ATLAS ; Barton, A.E. ; Bertram, I.A. et al. / Measurement of W± boson production in Pb+Pb collisions at √sNN=5.02Te with the ATLAS detector. In: European Physical Journal D. 2019 ; Vol. 79, No. 11.

Bibtex

@article{1082c259d20f4a6283dc6daacbadbb89,
title = "Measurement of W± boson production in Pb+Pb collisions at √sNN=5.02Te with the ATLAS detector",
abstract = "A measurement of W± boson production in Pb+Pb collisions at √sNN=5.02 TeV is reported using data recorded by the ATLAS experiment at the LHC in 2015, corresponding to a total integrated luminosity of 0.49nb−1 . The W± bosons are reconstructed in the electron or muon leptonic decay channels. Production yields of leptonically decaying W± bosons, normalised by the total number of minimum-bias events and the nuclear thickness function, are measured within a fiducial region defined by the detector acceptance and the main kinematic requirements. These normalised yields are measured separately for W+ and W− bosons, and are presented as a function of the absolute value of pseudorapidity of the charged lepton and of the collision centrality. The lepton charge asymmetry is also measured as a function of the absolute value of lepton pseudorapidity. In addition, nuclear modification factors are calculated using the W± boson production cross-sections measured in pp collisions. The results are compared with predictions based on next-to-leading-order calculations with CT14 parton distribution functions as well as with predictions obtained with the EPPS16 and nCTEQ15 nuclear parton distribution functions. No dependence of normalised production yields on centrality and a good agreement with predictions are observed for mid-central and central collisions. For peripheral collisions, the data agree with predictions within 1.7 (0.9) standard deviations for W− ( W+ ) bosons.",
author = "ATLAS Collaboration and A.E. Barton and I.A. Bertram and G. Borissov and E.V. Bouhova-Thacker and H. Fox and R.C.W. Henderson and R.W.L. Jones and V. Kartvelishvili and R.E. Long and P.A. Love and D. Muenstermann and A.J. Parker and Izaac Sanderswood and M. Smizanska and A.S. Tee and J. Walder and A.M. Wharton and B.W. Whitmore and Melissa Yexley",
note = "Export Date: 28 November 2019",
year = "2019",
month = nov,
day = "1",
doi = "10.1140/epjc/s10052-019-7439-3",
language = "English",
volume = "79",
journal = "European Physical Journal D",
issn = "1434-6060",
publisher = "Springer New York LLC",
number = "11",

}

RIS

TY - JOUR

T1 - Measurement of W± boson production in Pb+Pb collisions at √sNN=5.02Te with the ATLAS detector

AU - Collaboration, ATLAS

AU - Barton, A.E.

AU - Bertram, I.A.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Fox, H.

AU - Henderson, R.C.W.

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Long, R.E.

AU - Love, P.A.

AU - Muenstermann, D.

AU - Parker, A.J.

AU - Sanderswood, Izaac

AU - Smizanska, M.

AU - Tee, A.S.

AU - Walder, J.

AU - Wharton, A.M.

AU - Whitmore, B.W.

AU - Yexley, Melissa

N1 - Export Date: 28 November 2019

PY - 2019/11/1

Y1 - 2019/11/1

N2 - A measurement of W± boson production in Pb+Pb collisions at √sNN=5.02 TeV is reported using data recorded by the ATLAS experiment at the LHC in 2015, corresponding to a total integrated luminosity of 0.49nb−1 . The W± bosons are reconstructed in the electron or muon leptonic decay channels. Production yields of leptonically decaying W± bosons, normalised by the total number of minimum-bias events and the nuclear thickness function, are measured within a fiducial region defined by the detector acceptance and the main kinematic requirements. These normalised yields are measured separately for W+ and W− bosons, and are presented as a function of the absolute value of pseudorapidity of the charged lepton and of the collision centrality. The lepton charge asymmetry is also measured as a function of the absolute value of lepton pseudorapidity. In addition, nuclear modification factors are calculated using the W± boson production cross-sections measured in pp collisions. The results are compared with predictions based on next-to-leading-order calculations with CT14 parton distribution functions as well as with predictions obtained with the EPPS16 and nCTEQ15 nuclear parton distribution functions. No dependence of normalised production yields on centrality and a good agreement with predictions are observed for mid-central and central collisions. For peripheral collisions, the data agree with predictions within 1.7 (0.9) standard deviations for W− ( W+ ) bosons.

AB - A measurement of W± boson production in Pb+Pb collisions at √sNN=5.02 TeV is reported using data recorded by the ATLAS experiment at the LHC in 2015, corresponding to a total integrated luminosity of 0.49nb−1 . The W± bosons are reconstructed in the electron or muon leptonic decay channels. Production yields of leptonically decaying W± bosons, normalised by the total number of minimum-bias events and the nuclear thickness function, are measured within a fiducial region defined by the detector acceptance and the main kinematic requirements. These normalised yields are measured separately for W+ and W− bosons, and are presented as a function of the absolute value of pseudorapidity of the charged lepton and of the collision centrality. The lepton charge asymmetry is also measured as a function of the absolute value of lepton pseudorapidity. In addition, nuclear modification factors are calculated using the W± boson production cross-sections measured in pp collisions. The results are compared with predictions based on next-to-leading-order calculations with CT14 parton distribution functions as well as with predictions obtained with the EPPS16 and nCTEQ15 nuclear parton distribution functions. No dependence of normalised production yields on centrality and a good agreement with predictions are observed for mid-central and central collisions. For peripheral collisions, the data agree with predictions within 1.7 (0.9) standard deviations for W− ( W+ ) bosons.

U2 - 10.1140/epjc/s10052-019-7439-3

DO - 10.1140/epjc/s10052-019-7439-3

M3 - Journal article

VL - 79

JO - European Physical Journal D

JF - European Physical Journal D

SN - 1434-6060

IS - 11

M1 - 935

ER -