Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at root s=13 TeV with the ATLAS detector

doi:10.1016/j.physletb.2021.136412

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/76249

Registo completo

Campo DC	Valor	Idioma
dc.contributor.author	Onofre, A.	por
dc.contributor.author	Castro, Nuno Filipe	por
dc.contributor.author	ATLAS Collaboration	por
dc.date.accessioned	2022-03-01T18:07:22Z	-
dc.date.available	2022-03-01T18:07:22Z	-
dc.date.issued	2021	-
dc.identifier.citation	Aad, G., Abbott, B., Abbott, D. C., Abed Abud, A., Abeling, K., Abhayasinghe, D. K., . . . Zwalinski, L. (2021). Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at s=13 TeV with the ATLAS detector. Physics Letters B, 819, 136412. doi: https://doi.org/10.1016/j.physletb.2021.136412	por
dc.identifier.issn	0370-2693	-
dc.identifier.uri	https://hdl.handle.net/1822/76249	-
dc.description.abstract	A search for the Higgs boson decaying into a photon and a pair of electrons or muons with an invariant mass mℓℓ<30 GeV is presented. The analysis is performed using 139 fb−1 of proton–proton collision data, produced by the LHC at a centre-of-mass energy of 13 TeV and collected by the ATLAS experiment. Evidence for the H→ℓℓγ process is found with a significance of 3.2 over the background-only hypothesis, compared to an expected significance of 2.1 for the Standard Model prediction. The best-fit value of the signal-strength parameter, defined as the ratio of the observed signal yield to the one expected in the Standard Model, is μ=1.5±0.5. The Higgs boson production cross-section times the H→ℓℓγ branching ratio for mℓℓ<30 GeV is determined to be 8.7−2.7+2.8 fb.	por
dc.description.sponsorship	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; ANID, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEADRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany; GSRT, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; JINR; MES of Russia and NRC KI, Russian Federation; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, CANARIE, Compute Canada, CRC and IVADO, Canada; Beijing Municipal Sci-ence & Technology Commission, China; COST, ERC, ERDF, Horizon 2020 and Marie SkodowskaCurie Actions, European Union; In-vestissements d'Avenir Labex, Investissements d'Avenir Idex and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; La Caixa Bank-ing Foundation, CERCA Programme Generalitat de Catalunya and PROMETEO and GenT Programmes Generalitat Valenciana, Spain; Goran Gustafssons Stiftelser, Sweden; The Royal Society and Lever-hulme Trust, United Kingdom.r The crucial computing support from all WLCG partners is ac-knowledged gratefully, in particular from CERN, the ATLAS Tier1 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) , the Tier2 facilities worldwide and la	por
dc.language.iso	eng	por
dc.publisher	Elsevier 1	por
dc.rights	openAccess	por
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	por
dc.title	Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at root s=13 TeV with the ATLAS detector	por
dc.type	article	por
dc.peerreviewed	yes	por
dc.relation.publisherversion	https://www.sciencedirect.com/science/article/pii/S037026932100352X	por
oaire.citationVolume	819	por
dc.identifier.doi	10.1016/j.physletb.2021.136412	por
dc.subject.fos	Ciências Naturais::Ciências Físicas	por
dc.description.publicationversion	info:eu-repo/semantics/publishedVersion	-
dc.subject.wos	Science & Technology	por
sdum.journal	Physics Letters B	por
oaire.version	VoR	por
Aparece nas coleções:	LIP - Artigos/papers