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Measurement of the Υ(1S) production cross-section in pp collisions at √s=7 TeV in ATLAS

dc.contributor.authorATLAS Collaboration
dc.contributor.authorAad, G.
dc.contributor.authorBarreiro Alonso, Fernando 
dc.contributor.authorCantero, J.
dc.contributor.authorDe la Torre, H.
dc.contributor.authorPeso Malagón, José del 
dc.contributor.authorGlasman Kuguel, Claudia Beatriz 
dc.contributor.authorLabarga Echeverría, Luis Alfonso 
dc.contributor.authorLagouri, T.
dc.contributor.authorLlorente Merino, J.
dc.contributor.authorMarch, Luis
dc.contributor.authorNebot, Eduardo
dc.contributor.authorRodier, Stephane
dc.contributor.authorTerrón Cuadrado, Juan 
dc.contributor.otherUAM. Departamento de Física de Materialeses_ES
dc.date.accessioned2016-04-15T13:06:49Z
dc.date.available2016-04-15T13:06:49Z
dc.date.issued2011-11-03
dc.identifier.citationPhysics Letters B 705.1-2 (2011) 9-27en_US
dc.identifier.issn0370-2693 (print)es_ES
dc.identifier.issn1873-2445 (online)es_ES
dc.identifier.urihttp://hdl.handle.net/10486/670666
dc.descriptionArtículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMen_US
dc.description.abstractA measurement of the cross-section for Υ (1S)→μ+μ− production in proton–proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the Υ (1S) transverse momentum in two bins of rapidity, |yΥ (1S)| < 1.2 and 1.2 < |yΥ (1S)| < 2.4. The measurement requires that both muons have transverse momentum pμ T > 4 GeV and pseudorapidity |ημ| < 2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb−1, collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in PYTHIA while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet modelen_US
dc.description.sponsorshipWe thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We also wish to thank Pierre Artoisenet, John Campbell and Torbjorn Sjostrand for their help with the theoretical predictions. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, 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; ARTEMIS, European Union; IN2P3–CNRS, CEA-DSM/IRFU, France; GNAS, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; 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. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA) and in the Tier-2 facilities worldwideen_US
dc.format.extent19 pág.es_ES
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherCERNen_US
dc.publisherElsevieren_US
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physicsen_US
dc.rights© 2011 CERNen_US
dc.titleMeasurement of the Υ(1S) production cross-section in pp collisions at √s=7 TeV in ATLASen_US
dc.typearticleen
dc.subject.ecienciaFísicaes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.physletb.2011.09.092es_ES
dc.identifier.doi10.1016/j.physletb.2011.09.092es_ES
dc.identifier.publicationfirstpage9es_ES
dc.identifier.publicationissue1-2es_ES
dc.identifier.publicationlastpage27es_ES
dc.identifier.publicationvolume705es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/303482es_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.rights.ccReconocimiento – NoComercial – SinObraDerivadaes_ES
dc.rights.accessRightsopenAccessen
dc.authorUAMLagouri , Theodota (263922)
dc.authorUAMLabarga Echeverría, Luis Alfonso (259926)
dc.authorUAMMarch Ruiz, Luis (264217)
dc.authorUAMNebot Del Busto, Eduardo (264001)
dc.authorUAMBarreiro Alonso, Fernando (259561)
dc.authorUAMRodier , Stephane (260644)
dc.facultadUAMFacultad de Ciencias


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