Evidence for the spin-0 nature of the Higgs boson using ATLAS data
Entity
UAM. Departamento de Física TeóricaPublisher
CERN; ElsevierDate
2013-08-16Citation
10.1016/j.physletb.2013.08.026
Physics Letters B 726.1-3 (2013) 120–144
ISSN
0370-2693 (print); 1873-2445 (online)DOI
10.1016/j.physletb.2013.08.026Funded by
We acknowledge the support of ANPC y T, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbai-jan; SSTC, Belarus; CNPq and FAP ESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COL-CIENCIAS, Colombia; MSMTCR, MPOCR and VSCCR, CzechRepublic; 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 Av H Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MN iS W, Poland; GRICES and FCT , Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation ;JINR ; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, SouthAfrica; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bernand Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Lever hulme 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 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3(France), KIT/Grid KA(Germany), INFN-CNAF (Italy)Project
info:eu-repo/grantAgreement/EC/FP7/246806Editor's Version
http://dx.doi.org/10.1016/j.physletb.2013.08.026Subjects
Higgs boson; Parity; Spin; FísicaNote
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 UAMRights
© 2013 CERNAbstract
Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton-proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin-parity JP=0+ hypothesis is compared with alternative hypotheses using the Higgs boson decays H→γγ, H→ZZ*→4ℓ and H→WW*→ℓνℓν, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb-1 collected at a centre-of-mass energy of s=8TeV. For the H→ZZ*→4ℓ decay mode the dataset corresponding to an integrated luminosity of 4.6 fb-1 collected at s=7TeV is included. The data are compatible with the Standard Model JP=0+ quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this Letter, namely some specific JP=0-, 1+, 1-, 2+ models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the JP=2+ model, of the relative fractions of gluon-fusion and quark-antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred
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Google Scholar:ATLAS Collaboration
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Aad, G.
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Arnal, V.
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Barreiro Alonso, Fernando
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Cantero, J.
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De la Torre, H.
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Peso Malagón, José del
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Glasman Kuguel, Claudia Beatriz
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Labarga Echeverría, Luis Alfonso
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Llorente Merino, J.
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Terrón Cuadrado, Juan
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