Observation of nuclear modifications in W± boson production in pPb collisions at sNN=8.16TeV
Authors
Sirunyan, A. M.Tumasyan, A.
Adam, W.
Ambrogi, F.
Adžić, Petar
Ćirković, Predrag

Devetak, Damir

Đorđević, Miloš

Milošević, Jovan

Contributors
CMS CollaborationCMS Collaboration (ukupan broj autora: 2337)
Article (Published version)
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The production of W± bosons is studied in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of sNN=8.16TeV. Measurements are performed in the W±→μ±νμ channel using a data sample corresponding to an integrated luminosity of 173.4±6.1nb−1, collected by the CMS Collaboration at the LHC. The number of positively and negatively charged W bosons is determined separately in the muon pseudorapidity region in the laboratory frame |ηlab μ|<2.4 and transverse momentum pT μ>25GeV/c. The W± boson differential cross sections, muon charge asymmetry, and the ratios of W± boson yields for the proton-going over the Pb-going beam directions are reported as a function of the muon pseudorapidity in the nucleon-nucleon centre-of-mass frame. The measurements are compared to the predictions from theoretical calculations based on parton distribution functions (PDFs) at next-to-leading-order. The results favour PDF calculations that include nuclear modifications and provide constraints on ...the nuclear PDF global fits. © 2019 The Author(s)
Source:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2020, 800, 135048-
DOI: 10.1016/j.physletb.2019.135048
ISSN: 0370-2693
WoS: 000503832500038
Scopus: 2-s2.0-85076613850
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VinčaTY - JOUR AU - Sirunyan, A. M. AU - Tumasyan, A. AU - Adam, W. AU - Ambrogi, F. AU - Adžić, Petar AU - Ćirković, Predrag AU - Devetak, Damir AU - Đorđević, Miloš AU - Milošević, Jovan PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8766 AB - The production of W± bosons is studied in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of sNN=8.16TeV. Measurements are performed in the W±→μ±νμ channel using a data sample corresponding to an integrated luminosity of 173.4±6.1nb−1, collected by the CMS Collaboration at the LHC. The number of positively and negatively charged W bosons is determined separately in the muon pseudorapidity region in the laboratory frame |ηlab μ|<2.4 and transverse momentum pT μ>25GeV/c. The W± boson differential cross sections, muon charge asymmetry, and the ratios of W± boson yields for the proton-going over the Pb-going beam directions are reported as a function of the muon pseudorapidity in the nucleon-nucleon centre-of-mass frame. The measurements are compared to the predictions from theoretical calculations based on parton distribution functions (PDFs) at next-to-leading-order. The results favour PDF calculations that include nuclear modifications and provide constraints on the nuclear PDF global fits. © 2019 The Author(s) T2 - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics T1 - Observation of nuclear modifications in W± boson production in pPb collisions at sNN=8.16TeV VL - 800 SP - 135048 DO - 10.1016/j.physletb.2019.135048 ER -
@article{ author = "Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Ambrogi, F. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan", year = "2020", abstract = "The production of W± bosons is studied in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of sNN=8.16TeV. Measurements are performed in the W±→μ±νμ channel using a data sample corresponding to an integrated luminosity of 173.4±6.1nb−1, collected by the CMS Collaboration at the LHC. The number of positively and negatively charged W bosons is determined separately in the muon pseudorapidity region in the laboratory frame |ηlab μ|<2.4 and transverse momentum pT μ>25GeV/c. The W± boson differential cross sections, muon charge asymmetry, and the ratios of W± boson yields for the proton-going over the Pb-going beam directions are reported as a function of the muon pseudorapidity in the nucleon-nucleon centre-of-mass frame. The measurements are compared to the predictions from theoretical calculations based on parton distribution functions (PDFs) at next-to-leading-order. The results favour PDF calculations that include nuclear modifications and provide constraints on the nuclear PDF global fits. © 2019 The Author(s)", journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics", title = "Observation of nuclear modifications in W± boson production in pPb collisions at sNN=8.16TeV", volume = "800", pages = "135048", doi = "10.1016/j.physletb.2019.135048" }
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M.,& Milošević, J.. (2020). Observation of nuclear modifications in W± boson production in pPb collisions at sNN=8.16TeV. in Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 800, 135048. https://doi.org/10.1016/j.physletb.2019.135048
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J. Observation of nuclear modifications in W± boson production in pPb collisions at sNN=8.16TeV. in Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2020;800:135048. doi:10.1016/j.physletb.2019.135048 .
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, "Observation of nuclear modifications in W± boson production in pPb collisions at sNN=8.16TeV" in Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 800 (2020):135048, https://doi.org/10.1016/j.physletb.2019.135048 . .