Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/109638
DC Field | Value | Language |
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dc.contributor.author | Santos, S. P. Amor dos | - |
dc.contributor.author | Carvalho, J. | - |
dc.contributor.author | Fiolhais, M. C. N. | - |
dc.contributor.author | Galhardo, B. | - |
dc.contributor.author | Veloso, F. | - |
dc.contributor.author | Wolters, H. | - |
dc.contributor.author | ATLAS Collaboration | - |
dc.date.accessioned | 2023-10-19T09:23:42Z | - |
dc.date.available | 2023-10-19T09:23:42Z | - |
dc.date.issued | 2014 | - |
dc.identifier.uri | https://hdl.handle.net/10316/109638 | - |
dc.description.abstract | This Letter reports the observation of a high transverse momentum Z→bb¯ signal in proton–proton collisions at s=8 TeV and the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5 fb−1. The Z→bb¯ decay is reconstructed from a pair of b-tagged jets, clustered with the anti-kt jet algorithm with R=0.4, that have low angular separation and form a dijet with pT>200 GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet background mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be σZ→bb¯ fid=2.02±0.20 (stat.) ±0.25 (syst.)±0.06 (lumi.) pb=2.02 ±0.33 pb, in good agreement with next-to-leading-order theoretical predictions. | pt |
dc.description.sponsorship | We 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 acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbai-jan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COL-CIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Repub-lic; 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 Founda-tion, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Nor-way; MNiSW and NCN, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Lever-hulme Trust, United Kingdom; DOE and NSF, United States. The crucial computing support from all WLCG partners is ac-knowledged 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. | pt |
dc.language.iso | eng | pt |
dc.publisher | Elsevier | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.title | Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector | pt |
dc.type | article | - |
degois.publication.firstPage | 25 | pt |
degois.publication.lastPage | 43 | pt |
degois.publication.title | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1016/j.physletb.2014.09.020 | pt |
degois.publication.volume | 738 | pt |
dc.date.embargo | 2014-01-01 | * |
uc.date.periodoEmbargo | 0 | pt |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | Com Texto completo | - |
crisitem.author.researchunit | CFisUC – Center for Physics of the University of Coimbra | - |
crisitem.author.researchunit | LIP – Laboratory of Instrumentation and Experimental Particle Physics | - |
crisitem.author.researchunit | LIP – Laboratory of Instrumentation and Experimental Particle Physics | - |
crisitem.author.orcid | 0000-0002-3015-7821 | - |
crisitem.author.orcid | 0000-0002-9588-1773 | - |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector.pdf | 1.35 MB | Adobe PDF | View/Open |
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