Autores
Georges Aad, B Abbott, J Abdallah, AA Abdelalim, Abdelmalek Abdesselam, B Abi, M Abolins, H Abramowicz, H Abreu, E Acerbi, BS Acharya, M Ackers, DL Adams, TN Addy, J Adelman, M Aderholz, S Adomeit, C Adorisio, P Adragna, T Adye, S Aefsky, JA Aguilar-Saavedra, M Aharrouche, SP Ahlen, F Ahles, A Ahmad, H Ahmed, M Ahsan, G Aielli, T Akdogan, TPA Åkesson, G Akimoto, AV Akimov, A Aktas, MS Alam, MA Alam, S Albrand, M Aleksa, IN Aleksandrov, M Aleppo, F Alessandria, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Aliev, G Alimonti, J Alison, M Aliyev, PP Allport, SE Allwood-Spiers, J Almond, A Aloisio, R Alon, Alejandro Alonso, J Alonso, MG Alviggi, K Amako, P Amaral, G Ambrosio, C Amelung, VV Ammosov, A Amorim, G Amoros, N Amram, C Anastopoulos, T Andeen, CF Anders, KJ Anderson, A Andreazza, V Andrei, ML Andrieux, XS Anduaga, A Angerami, F Anghinolfi, N Anjos, A Annovi, A Antonaki, M Antonelli, S Antonelli, J Antos, B Antunovic, F Anulli, S Aoun, R Apolle, G Arabidze, I Aracena, Y Arai, ATH Arce, JP Archambault, S Arfaoui, JF Arguin, T Argyropoulos, E Arik, M Arik, AJ Armbruster, KE Arms, SR Armstrong, O Arnaez, C Arnault, A Artamonov, D Arutinov, M Asai, S Asai, R Asfandiyarov, S Ask, B Åsman, D Asner, L Asquith, K Assamagan, A Astbury, A Astvatsatourov, G Atoian, B Aubert, B Auerbach, E Auge, K Augsten, M Aurousseau, N Austin, G Avolio, R Avramidou, D Axen, C Ay, G Azuelos, Y Azuma, MA Baak, G Baccaglioni, C Bacci, AM Bach, H Bachacou, K Bachas, G Bachy, M Backes, E Badescu, P Bagnaia, Y Bai, DC Bailey, T Bain, JT Baines, OK Baker, MD Baker, S Baker, F Baltasar Dos Santos Pedrosa, E Banas, P Banerjee, Sw Banerjee, D Banfi, A Bangert, V Bansal
Fecha de publicación
2010/12
Revista
Journal of High Energy Physics
Volumen
2010
Número
12
Páginas
1-65
Editor
Springer-Verlag
Descripción
First measurements of the W→ ℓν and Z/γ*→ ℓℓ (ℓ= e, μ) production cross sections in proton-proton collisions at are presented using data recorded by the ATLAS experiment at the LHC. The results are based on 2250 W→ ℓν and 179 Z/γ*→ ℓℓ candidate events selected from a data set corresponding to an integrated luminosity of approximately 320 nb. The measured total W and Z/γ∗-boson production cross sections times the respective leptonic branching ratios for the combined electron and muon channels are. BR (W→ ℓν)= 9.96±0.23 (stat)±0.50 (syst)±1.10 (lumi) nb and BR (Z/γ∗→ ℓℓ)= 0. 82±0. 06 (stat)±0. 05 (syst)±0. 09 (lumi) nb (within the invariant mass window 66< m ℓℓ< 116GeV). The W/Z cross-section ratio is measured to be 11.7±0.9 (stat)±0.4 (syst). In addition, measurements of the W+ and W− production cross sections and of the lepton charge asymmetry are reported. Theoretical …
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