Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at root s=7 TeV with the ATLAS experiment
This paper describes an analysis of the angular distribution of W→eν and W→μν decays, using data from pp collisions at √s =7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb-1. Using the decay lepton transverse momentum and the missing...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2012
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| _version_ | 1826262000296001536 |
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| author | Aad, G Abbott, B Abdallah, J Abdelalim, A Abdesselam, A Abdinov, O Abi, B Abolins, M AbouZeid, O Abramowicz, H Abreu, H Acerbi, E Acharya, B Adamczyk, L Adams, D Addy, T Adelman, J Aderholz, M Adomeit, S Adragna, P Adye, T Aefsky, S Aguilar-Saavedra, J Aharrouche, M Ahlen, S |
| author_facet | Aad, G Abbott, B Abdallah, J Abdelalim, A Abdesselam, A Abdinov, O Abi, B Abolins, M AbouZeid, O Abramowicz, H Abreu, H Acerbi, E Acharya, B Adamczyk, L Adams, D Addy, T Adelman, J Aderholz, M Adomeit, S Adragna, P Adye, T Aefsky, S Aguilar-Saavedra, J Aharrouche, M Ahlen, S |
| author_sort | Aad, G |
| collection | OXFORD |
| description | This paper describes an analysis of the angular distribution of W→eν and W→μν decays, using data from pp collisions at √s =7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb-1. Using the decay lepton transverse momentum and the missing transverse momentum, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (pWT): 35 < pWT < 50 GeV and pWT > 50 GeV. Good agreement is found with theoretical predictions. For pWT >50 GeV, the values of f0 and fL-fR, averaged over charge and lepton flavour, are measured to be: f0=0. 127±0. 030±0. 108 and fL-fR=0. 252±0. 017±0. 030, where the first uncertainties are statistical, and the second include all systematic effects. © 2012 CERN for the benefit of the ATLAS collaboration. |
| first_indexed | 2024-03-06T19:29:26Z |
| format | Journal article |
| id | oxford-uuid:1cf12467-ea3e-4e10-a9f3-7f45aa952a7f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:29:26Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:1cf12467-ea3e-4e10-a9f3-7f45aa952a7f2022-03-26T11:08:16ZMeasurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at root s=7 TeV with the ATLAS experimentJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1cf12467-ea3e-4e10-a9f3-7f45aa952a7fEnglishSymplectic Elements at Oxford2012Aad, GAbbott, BAbdallah, JAbdelalim, AAbdesselam, AAbdinov, OAbi, BAbolins, MAbouZeid, OAbramowicz, HAbreu, HAcerbi, EAcharya, BAdamczyk, LAdams, DAddy, TAdelman, JAderholz, MAdomeit, SAdragna, PAdye, TAefsky, SAguilar-Saavedra, JAharrouche, MAhlen, SThis paper describes an analysis of the angular distribution of W→eν and W→μν decays, using data from pp collisions at √s =7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb-1. Using the decay lepton transverse momentum and the missing transverse momentum, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (pWT): 35 < pWT < 50 GeV and pWT > 50 GeV. Good agreement is found with theoretical predictions. For pWT >50 GeV, the values of f0 and fL-fR, averaged over charge and lepton flavour, are measured to be: f0=0. 127±0. 030±0. 108 and fL-fR=0. 252±0. 017±0. 030, where the first uncertainties are statistical, and the second include all systematic effects. © 2012 CERN for the benefit of the ATLAS collaboration. |
| spellingShingle | Aad, G Abbott, B Abdallah, J Abdelalim, A Abdesselam, A Abdinov, O Abi, B Abolins, M AbouZeid, O Abramowicz, H Abreu, H Acerbi, E Acharya, B Adamczyk, L Adams, D Addy, T Adelman, J Aderholz, M Adomeit, S Adragna, P Adye, T Aefsky, S Aguilar-Saavedra, J Aharrouche, M Ahlen, S Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at root s=7 TeV with the ATLAS experiment |
| title | Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at root s=7 TeV with the ATLAS experiment |
| title_full | Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at root s=7 TeV with the ATLAS experiment |
| title_fullStr | Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at root s=7 TeV with the ATLAS experiment |
| title_full_unstemmed | Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at root s=7 TeV with the ATLAS experiment |
| title_short | Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at root s=7 TeV with the ATLAS experiment |
| title_sort | measurement of the polarisation of w bosons produced with large transverse momentum in pp collisions at root s 7 tev with the atlas experiment |
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