Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/109124
DC FieldValueLanguage
dc.contributor.authorSantos, S. P. Amor dos-
dc.contributor.authorCarvalho, J.-
dc.contributor.authorFiolhais, M. C. N.-
dc.contributor.authorGalhardo, B.-
dc.contributor.authorVeloso, F.-
dc.contributor.authorWolters, H.-
dc.contributor.authorATLAS Collaboration-
dc.date.accessioned2023-09-28T10:12:42Z-
dc.date.available2023-09-28T10:12:42Z-
dc.date.issued2015-
dc.identifier.urihttps://hdl.handle.net/10316/109124-
dc.description.abstractA search for the production of single-top-quarks in association with missing energy is performed in proton–proton collisions at a centre-of-mass energy of √s = 8 Tev with the ATLAS experiment at the large hadron collider using data collected in 2012, corresponding to an integrated luminosity of 20.3 fb-1. In this search, the W boson from the top quark is required to decay into an electron or a muon and a neutrino. No deviation from the standard model prediction is observed, and upper limits are set on the production cross-section for resonant and non-resonant production of an invisible exotic state in association with a right-handed top quark. In the case of resonant production, for a spin-0 resonance with a mass of 500 GeV, an effective coupling strength above 0.15 confidence level for the top quark and an invisible spin-1/2 state with mass between 0 and 100 GeV. In the case of non-resonant production, an effective coupling strength above 0.2 is excluded at 95% confidence level for the top quark and an invisible spin-1 state with mass between 0 and 657 GeV.pt
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 acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW 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, ICORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; 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 andWallenberg Foundation, Sweden; SER, SNSFand Cantons of Bern andGeneva, 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 fromCERNand theATLASTier- 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.isoengpt
dc.publisherSpringer Naturept
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.titleSearch for invisible particles produced in association with single-top-quarks in proton–proton collisions at √s = 8 Tev with the ATLAS detectorpt
dc.typearticle-
degois.publication.firstPage79pt
degois.publication.issue2pt
degois.publication.titleEuropean Physical Journal Cpt
dc.peerreviewedyespt
dc.identifier.doi10.1140/epjc/s10052-014-3233-4pt
degois.publication.volume75pt
dc.date.embargo2015-01-01*
uc.date.periodoEmbargo0pt
item.grantfulltextopen-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.openairetypearticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextCom Texto completo-
crisitem.author.researchunitCFisUC – Center for Physics of the University of Coimbra-
crisitem.author.researchunitLIP – Laboratory of Instrumentation and Experimental Particle Physics-
crisitem.author.researchunitLIP – Laboratory of Instrumentation and Experimental Particle Physics-
crisitem.author.orcid0000-0002-3015-7821-
crisitem.author.orcid0000-0002-9588-1773-
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais
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