Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W -> lv and Z -> ll Cross Sections

doi:10.1103/PhysRevLett.109.012001

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/48820

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Campo DC	Valor	Idioma
dc.contributor.author	Onofre, A.	por
dc.contributor.author	Castro, Nuno Filipe Silva Fernandes	por
dc.contributor.author	ATLAS Collaboration	por
dc.date.accessioned	2017-12-30T06:15:35Z	-
dc.date.available	2017-12-30T06:15:35Z	-
dc.date.issued	2012	-
dc.identifier.citation	Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., . . . Collaboration, A. (2012). Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W -> lv and Z -> ll Cross Sections. Physical Review Letters, 109(1). doi: 10.1103/PhysRevLett.109.012001	por
dc.identifier.issn	0031-9007	-
dc.identifier.uri	https://hdl.handle.net/1822/48820	-
dc.description.abstract	A QCD analysis is reported of ATLAS data on inclusive W± and Z boson production in pp collisions at the LHC, jointly with ep deep-inelastic scattering data from HERA. The ATLAS data exhibit sensitivity to the light quark sea composition and magnitude at Bjorken x∼0.01. Specifically, the data support the hypothesis of a symmetric composition of the light quark sea at low x. The ratio of the strange-to-down sea quark distributions is determined to be 1.00+0.25−0.28 at absolute four-momentum transfer squared Q2=1.9 GeV2 and x=0.023.	por
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, 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 and ERC, 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.	por
dc.language.iso	eng	por
dc.publisher	American Physical Society	por
dc.relation	info:eu-repo/grantAgreement/EC/FP7/246806/EU	por
dc.rights	openAccess	por
dc.title	Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W -> lv and Z -> ll Cross Sections	por
dc.type	article	por
dc.peerreviewed	yes	por
dc.relation.publisherversion	https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.109.012001	por
oaire.citationIssue	1	por
oaire.citationTitle	Physical Review Letters	por
oaire.citationVolume	109	por
dc.identifier.eissn	1079-7114	-
dc.identifier.doi	10.1103/PhysRevLett.109.012001	por
dc.subject.fos	Ciências Naturais::Ciências Físicas	-
dc.subject.fos	Ciências Naturais::Ciências Físicas	por
dc.description.publicationversion	info:eu-repo/semantics/publishedVersion	por
dc.subject.wos	Science & Technology	por
sdum.journal	Physical Review Letters	por
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