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DC Field | Value | Language |
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dc.contributor.author | Badalov, Alexey | - |
dc.contributor.author | Camboni, Alessandro | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Gascón Fora, David | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | Marin Benito, Carla | - |
dc.contributor.author | Picatoste Olloqui, Eduardo | - |
dc.contributor.author | Rives Molina, Vicente José | - |
dc.contributor.author | LHCb Collaboration | - |
dc.date.accessioned | 2018-01-26T11:39:37Z | - |
dc.date.available | 2018-01-26T11:39:37Z | - |
dc.date.issued | 2016-10-07 | - |
dc.identifier.issn | 1126-6708 | - |
dc.identifier.uri | http://hdl.handle.net/2445/119339 | - |
dc.description.abstract | A measurement of the cross-section for W → eν production in pp collisions is presented using data corresponding to an integrated luminosity of 2 fb−1 collected by the LHCb experiment at a centre-of-mass energy of s√=8s=8 TeV. The electrons are required to have more than 20 GeV of transverse momentum and to lie between 2.00 and 4.25 in pseudorapidity. The inclusive W production cross-sections, where the W decays to eν, are measured to be σW+→e+νe=1124.4±2.1±21.5±11.2±13.0pb, σW+→e+νe=1124.4±2.1±21.5±11.2±13.0pb, σW−→e−ν¯¯¯e=809.0±1.9±18.1±7.0±9.4pb, σW−→e−ν¯e=809.0±1.9±18.1±7.0±9.4pb, where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy and the fourth are due to the luminosity determination. Differential cross-sections as a function of the electron pseudorapidity are measured. The W + /W − cross-section ratio and production charge asymmetry are also reported. Results are compared with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. Finally, in a precise test of lepton universality, the ratio of W boson branching fractions is determined to be B(W→eν)/B(W→μν)=1.020±0.002±0.019, B(W→eν)/B(W→μν)=1.020±0.002±0.019, where the first uncertainty is statistical and the second is systematic. | - |
dc.format.extent | 29 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Springer Verlag | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1007/JHEP10(2016)030 | - |
dc.relation.ispartof | Journal of High Energy Physics, 2016, vol. 2016, num. 30 | - |
dc.relation.uri | https://doi.org/10.1007/JHEP10(2016)030 | - |
dc.rights | cc-by (c) LHCb Collaboration et al., 2016 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Interaccions d'hadrons | - |
dc.subject.classification | Partícules (Física nuclear) | - |
dc.subject.other | Hadron interactions | - |
dc.subject.other | Particles (Nuclear physics) | - |
dc.title | Measurement of forward W → eν production in pp collisions at √s=8 TeV | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 669856 | - |
dc.date.updated | 2018-01-26T11:39:37Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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669856.pdf | 771.31 kB | Adobe PDF | View/Open |
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