Measurement of the production and lepton charge asymmetry of W bosons in Pb+ Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector

G. Aad; B. Abbott; J. Abdallah; S. Abdel Khalek; O. Abdinov; R. Aben; B. Abi; M. Abolins; O.S. AbouZeid; H. Abramowicz; Mogens Dam; Jørn Dines Hansen; Jørgen Beck Hansen; Stefania Xella; Peter Henrik Hansen; Troels Christian Petersen; Lotte Ansgaard Thomsen; S. Mehlhase; Morten Dam Jørgensen; Almut Maria Pingel; Ask Emil Løvschall-Jensen; M. A. Diaz; James William Monk; M. Pedersen; Graig Wiglesworth; Gorm Aske Gram Krohn Galster; Margar Simonyan

doi:10.1140/epjc/s10052-014-3231-6

Measurement of the production and lepton charge asymmetry of W bosons in Pb+ Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, M. Abolins, O.S. AbouZeid, H. Abramowicz, Mogens Dam, Jørn Dines Hansen, Jørgen Beck Hansen, Stefania Xella, Peter Henrik Hansen, Troels Christian Petersen, Lotte Ansgaard Thomsen, S. Mehlhase, Morten Dam Jørgensen, Almut Maria PingelAsk Emil Løvschall-Jensen, M. A. Diaz, James William Monk, M. Pedersen, Graig Wiglesworth, Gorm Aske Gram Krohn Galster, Margar Simonyan

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Abstract

A measurement of W boson production in lead-lead collisions at √sNN = 2.76 TeV is presented. It is based on the analysis of data collected with the ATLAS detector at the LHC in 2011 corresponding to an integrated luminosity of 0.14 nb^-1 and 0.15 nb^-1 in the muon and electron decay channels, respectively. The differential production yields and lepton charge asymmetry are each measured as a function of the average number of participating nucleons ‹N_part› and absolute pseudorapidity of the charged lepton. The results are compared to predictions based on next-to-leading-order QCD calculations. These measurements are, in principle, sensitive to possible nuclear modifications to the parton distribution functions and also provide information on scaling of W boson production in multi-nucleon systems.

Originalsprog	Engelsk
Artikelnummer	23
Tidsskrift	The European Physical Journal C: Particles and Fields
Vol/bind	75
Udgave nummer	1
ISSN	1434-6044
DOI	https://doi.org/10.1140/epjc/s10052-014-3231-6
Status	Udgivet - 22 jan. 2015

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10.1140/epjc/s10052-014-3231-6Licens: CC BY

art_10.1140_epjc_s10052-014-3231-6Forlagets udgivne version, 17,9 MBLicens: CC BY

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Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., ... Simonyan, M. (2015). Measurement of the production and lepton charge asymmetry of W bosons in Pb+ Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector. The European Physical Journal C: Particles and Fields, 75(1), Artikel 23. https://doi.org/10.1140/epjc/s10052-014-3231-6

Aad, G, Abbott, B, Abdallah, J, Abdel Khalek, S, Abdinov, O, Aben, R, Abi, B, Abolins, M, AbouZeid, OS, Abramowicz, H, Dam, M , Hansen, JD , Hansen, JB , Xella, S , Hansen, PH , Petersen, TC, Thomsen, LA, Mehlhase, S, Jørgensen, MD, Pingel, AM, Løvschall-Jensen, AE, Diaz, MA, Monk, JW, Pedersen, M, Wiglesworth, G, Galster, GAGK & Simonyan, M 2015, 'Measurement of the production and lepton charge asymmetry of W bosons in Pb+ Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector', The European Physical Journal C: Particles and Fields, bind 75, nr. 1, 23. https://doi.org/10.1140/epjc/s10052-014-3231-6

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title = "Measurement of the production and lepton charge asymmetry of W bosons in Pb+ Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector",

abstract = "A measurement of W boson production in lead-lead collisions at √sNN = 2.76 TeV is presented. It is based on the analysis of data collected with the ATLAS detector at the LHC in 2011 corresponding to an integrated luminosity of 0.14 nb-1 and 0.15 nb-1 in the muon and electron decay channels, respectively. The differential production yields and lepton charge asymmetry are each measured as a function of the average number of participating nucleons ‹Npart› and absolute pseudorapidity of the charged lepton. The results are compared to predictions based on next-to-leading-order QCD calculations. These measurements are, in principle, sensitive to possible nuclear modifications to the parton distribution functions and also provide information on scaling of W boson production in multi-nucleon systems.",

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AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - AbouZeid, O.S.

AU - Abramowicz, H.

AU - Dam, Mogens

AU - Hansen, Jørn Dines

AU - Hansen, Jørgen Beck

AU - Xella, Stefania

AU - Hansen, Peter Henrik

AU - Petersen, Troels Christian

AU - Thomsen, Lotte Ansgaard

AU - Mehlhase, S.

AU - Jørgensen, Morten Dam

AU - Pingel, Almut Maria

AU - Løvschall-Jensen, Ask Emil

AU - Diaz, M. A.

AU - Monk, James William

AU - Pedersen, M.

AU - Wiglesworth, Graig

AU - Galster, Gorm Aske Gram Krohn

AU - Simonyan, Margar

PY - 2015/1/22

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N2 - A measurement of W boson production in lead-lead collisions at √sNN = 2.76 TeV is presented. It is based on the analysis of data collected with the ATLAS detector at the LHC in 2011 corresponding to an integrated luminosity of 0.14 nb-1 and 0.15 nb-1 in the muon and electron decay channels, respectively. The differential production yields and lepton charge asymmetry are each measured as a function of the average number of participating nucleons ‹Npart› and absolute pseudorapidity of the charged lepton. The results are compared to predictions based on next-to-leading-order QCD calculations. These measurements are, in principle, sensitive to possible nuclear modifications to the parton distribution functions and also provide information on scaling of W boson production in multi-nucleon systems.

AB - A measurement of W boson production in lead-lead collisions at √sNN = 2.76 TeV is presented. It is based on the analysis of data collected with the ATLAS detector at the LHC in 2011 corresponding to an integrated luminosity of 0.14 nb-1 and 0.15 nb-1 in the muon and electron decay channels, respectively. The differential production yields and lepton charge asymmetry are each measured as a function of the average number of participating nucleons ‹Npart› and absolute pseudorapidity of the charged lepton. The results are compared to predictions based on next-to-leading-order QCD calculations. These measurements are, in principle, sensitive to possible nuclear modifications to the parton distribution functions and also provide information on scaling of W boson production in multi-nucleon systems.

U2 - 10.1140/epjc/s10052-014-3231-6

DO - 10.1140/epjc/s10052-014-3231-6

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SN - 1434-6044

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JO - The European Physical Journal C: Particles and Fields

JF - The European Physical Journal C: Particles and Fields

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ER -

Measurement of the production and lepton charge asymmetry of W bosons in Pb+ Pb collisions at root s(NN)=2.76 TeV with the ATLAS detector

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