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

Author
ATLAS collaboration; Barreiro Alonso, Fernandountranslated; Cantero, J.; De la Torre, H.; Del Peso, J.; Glasman Kuguel, Claudia Beatrizuntranslated; Labarga Echeverría, Luis Alfonsountranslated; Lagouri, T.; Llorente Merino, J.; March, Luis; Nebot, Eduardo; Rodier, Stephane; Terrón Cuadrado, Juanuntranslated
Entity
UAM. Departamento de Física Teórica
Publisher
CERN; Elsevier
Date
2011-11-03
Citation
Physics Letters B 705.1-2 (2011) 9-27
ISSN
0370-2693 (print); 1873-2445 (online)
Funded by
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 worldwide
Project
info:eu-repo/grantAgreement/EC/FP7/303482
Editor's Version
http://dx.doi.org/10.1016/j.physletb.2011.09.092
Subjects
Física
URI
http://hdl.handle.net/10486/670044
Note
Artículo 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 UAM
Rights
© 2011 CERN

Licencia de Creative Commons
Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.

Abstract

A 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 model
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Google™ Scholar:ATLAS collaboration - Barreiro Alonso, Fernando - Cantero, J. - De la Torre, H. - Del Peso, J. - Glasman Kuguel, Claudia Beatriz - Labarga Echeverría, Luis Alfonso - Lagouri, T. - Llorente Merino, J. - March, Luis - Nebot, Eduardo - Rodier, Stephane - Terrón Cuadrado, Juan

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