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Abstract:

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 f 0 , f L and f R over two ranges of W transverse momentum (p W T ): 35 < p W T < 50 GeV and p W T > 50 GeV. Good agreement is found with theoretical predictions. For p W T >50 GeV, the values of f 0 and f L -f R , averaged over charge and lepton flavour, are measured to be: f 0 =0. 127±0. 030±0. 108 and f L -f R =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.

Registro:

Documento: Artículo
Título:Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
Autor:Aad, G. et al.
Este artículo contiene 3034 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 3034 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2012
Volumen:72
Número:5
Página de inicio:1
Página de fin:30
DOI: http://dx.doi.org/10.1140/epjc/s10052-012-2001-6
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v72_n5_p1_Aad

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Citas:

---------- APA ----------
(2012) . Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment. European Physical Journal C, 72(5), 1-30.
http://dx.doi.org/10.1140/epjc/s10052-012-2001-6
---------- CHICAGO ----------
Aad, G. "Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment" . European Physical Journal C 72, no. 5 (2012) : 1-30.
http://dx.doi.org/10.1140/epjc/s10052-012-2001-6
---------- MLA ----------
Aad, G. "Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment" . European Physical Journal C, vol. 72, no. 5, 2012, pp. 1-30.
http://dx.doi.org/10.1140/epjc/s10052-012-2001-6
---------- VANCOUVER ----------
Aad, G. Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment. Eur. Phys. J. C. 2012;72(5):1-30.
http://dx.doi.org/10.1140/epjc/s10052-012-2001-6