Measurement of the forward W boson cross-section in pp collisions at √s=7 TeV
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Título: | Measurement of the forward W boson cross-section in pp collisions at √s=7 TeV |
Autor/a: | LHCb Collaboration Adeva Andany, Bernardo Álvarez Cartelle, Paula Dosil Suárez, Álvaro Fernández Albor, Víctor Manuel Gallas Torreira, Abraham Antonio García Pardiñas, Julián Hernando Morata, José Ángel Pazos Álvarez, Antonio Pérez Trigo, Eliseo Plo Casasus, Máximo Romero Vidal, Antonio Saborido Silva, Juan José Sanmartín Sedes, Brais Santamarina Ríos, Cibrán Seco Miguélez, Marcos Antonio Vázquez Regueiro, Pablo Vázquez Sierra, Carlos Vieites Díaz, María |
Centro/Departamento: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
Palabras chave: | Hadron-Hadron Scattering | QCD | Forward physics | |
Data: | 2014 |
Editor: | Springer |
Cita bibliográfica: | Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of the forward W boson cross-section in pp collisions at s√=7 TeV. J. High Energ. Phys. 2014, 79 (2014). https://doi.org/10.1007/JHEP12(2014)079 |
Resumo: | A measurement of the inclusive W → μν production cross-section using data from pp collisions at a centre-of-mass energy of √s=7 TeV is presented. The analysis is based on an integrated luminosity of about 1.0 fb−1 recorded with the LHCb detector. Results are reported for muons with a transverse momentum greater than 20 GeV/c and pseudorapidity between 2.0 and 4.5. The W + and W − production cross-sections are measured to be σW+→μ+ν=861.0±2.0±11.2±14.7pb, σW−→μ−ν¯=675.8±1.9±8.8±11.6pb, where the first uncertainty is statistical, the second is systematic and the third is due to the luminosity determination. Cross-section ratios and differential distributions as functions of the muon pseudorapidity are also presented. The ratio of W + to W − cross-sections in the same fiducial kinematic region is determined to be σW+→μ+νσW−→μ−ν¯=1.274±0.005±0.009, where the uncertainties are statistical and systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. |
Versión do editor: | https://doi.org/10.1007/JHEP12(2014)079 |
URI: | http://hdl.handle.net/10347/22075 |
DOI: | 10.1007/JHEP12(2014)079 |
ISSN: | 1029-8479 |
Dereitos: | © CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
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© CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
© CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.