Measurement of angular correlations in Drell–Yan lepton pairs to probe Z/γ⁎ boson transverse momentum at √s=7 TeV with the ATLAS detector

G Aad; T Abajyan; B Abbott; J Abdallah; S Abdel Khalek; AA Abdelalim; O Abdinov; R Aben; B Abi; M Abolins; OS AbouZeid; H Abramowicz; H Abreu; BS Acharya; L Adamczyk; DL Adams; TN Addy; J Adelman; S Adomeit; P Adragna; T Adye; S Aefsky; JA Aguilar-Saavedra; M Agustoni; SP Ahlen; F Ahles; A Ahmad; M Ahsan; G Aielli; TPA Åkesson; G Akimoto; AV Akimov; MA Alam; J Albert; S Albrand; M Aleksa; IN Aleksandrov; F Alessandria; C Alexa; G Alexander; G Alexandre; T Alexopoulos; M Alhroob; M Aliev; G Alimonti; J Alison; BMM Allbrooke; LJ Allison; PP Allport; SE Allwood-Spiers; J Almond; A Aloisio; R Alon; A Alonso; F Alonso; A Altheimer; B Alvarez Gonzalez; MG Alviggi; K Amako; C Amelung; VV Ammosov; SP Amor Dos Santos; A Amorim; S Amoroso; N Amram; C Anastopoulos; LS Ancu; N Andari; T Andeen; CF Anders; G Anders; KJ Anderson; A Andreazza; V Andrei; ML Andrieux; XS Anduaga; S Angelidakis; P Anger; A Angerami; F Anghinolfi; A Anisenkov; N Anjos; A Annovi; A Antonaki; M Antonelli; A Antonov; J Antos; F Anulli; M Aoki; S Aoun; L Aperio Bella; R Apolle; G Arabidze; I Aracena; Y Arai; ATH Arce; S Arfaoui; JF Arguin; S Argyropoulos; E Arik

Journal article

Measurement of angular correlations in Drell–Yan lepton pairs to probe Z/γ⁎ boson transverse momentum at √s=7 TeV with the ATLAS detector

G Aad, T Abajyan, B Abbott, J Abdallah, S Abdel Khalek, AA Abdelalim, O Abdinov, R Aben, B Abi, M Abolins, OS AbouZeid, H Abramowicz, H Abreu, BS Acharya, L Adamczyk, DL Adams, TN Addy, J Adelman, S Adomeit, P Adragna Show all

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics | Published : 2013

DOI: 10.1016/j.physletb.2013.01.054

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Abstract

A measurement of angular correlations in Drell–Yan lepton pairs via the ϕη ⁎ observable is presented. This variable probes the same physics as the Z/γ⁎ boson transverse momentum with a better experimental resolution. The Z/γ⁎→e+e− and Z/γ⁎→μ+μ− decays produced in proton–proton collisions at a centre-of-mass energy of sqrts=7 TeV are used. The data were collected with the ATLAS detector at the LHC and correspond to an integrated luminosity of 4.6 fb−1. Normalised differential cross sections as a function of ϕη ⁎ are measured separately for electron and muon decay channels. These channels are then combined for improved accuracy. The cross section is also measured double differentially as a fun..

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University of Melbourne Researchers

Nadia Davidson Author

Anna Phan Author

Elisabetta Barberio Author

Matteo Volpi Author

Grants

Awarded by Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)

Funding Acknowledgements

We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America.