Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector
This paper presents measurements of WZ production cross sections in pp collisions at a centre-of-mass energy of 13 TeV. The data were collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider, and correspond to an integrated luminosity of 36.1fb-1. The WZ candidate events are r...
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/194071 |
| Acceso en línea: | http://hdl.handle.net/10261/194071 |
| Access Level: | acceso abierto |
| Palabra clave: | ddc:530 ddc:500.2 |
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Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector |
| title |
Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector |
| spellingShingle |
Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector Álvarez Piqueras, D. ddc:530 ddc:500.2 |
| title_short |
Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector |
| title_full |
Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector |
| title_fullStr |
Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector |
| title_full_unstemmed |
Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector |
| title_sort |
Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detector |
| dc.creator.none.fl_str_mv |
Álvarez Piqueras, D. Aparisi Pozo, J.A. Bailey, A.J. Barranco, Laura Cabrera, Susana Castillo, F.L. Castillo Gimenez, M. V. Cerda Alberich, L. Costa, María José Escobar, Carlos Estrada, Oscar Ferrer, Antonio Fiorini, L. Fullana, Esteban Fuster, Juan García García, Carmen García Navarro, José Enrique González de la Hoz, Santiago Higón, Emilio Jimenez Pena, Javier Lacasta Llácer, Carlos Lozano Bahilo, José J. Madaffari, Daniele Mamuzic, Judita Martí García, Salvador Melini, Davide Miñano Moya, M. Mitsou, Vasiliki A. Rodriguez Bosca, S. Rodriguez Rodriguez, D. Ruiz Martínez, Arantxa Salt, José Santra, A. Sánchez Martínez, Javier Soldevila, Urmila Valero, Alberto Valls Ferrer, Juan Antonio Vos, Marcel |
| author |
Álvarez Piqueras, D. |
| author_facet |
Álvarez Piqueras, D. Aparisi Pozo, J.A. Bailey, A.J. Barranco, Laura Cabrera, Susana Castillo, F.L. Castillo Gimenez, M. V. Cerda Alberich, L. Costa, María José Escobar, Carlos Estrada, Oscar Ferrer, Antonio Fiorini, L. Fullana, Esteban Fuster, Juan García García, Carmen García Navarro, José Enrique González de la Hoz, Santiago Higón, Emilio Jimenez Pena, Javier Lacasta Llácer, Carlos Lozano Bahilo, José J. Madaffari, Daniele Mamuzic, Judita Martí García, Salvador Melini, Davide Miñano Moya, M. Mitsou, Vasiliki A. Rodriguez Bosca, S. Rodriguez Rodriguez, D. Ruiz Martínez, Arantxa Salt, José Santra, A. Sánchez Martínez, Javier Soldevila, Urmila Valero, Alberto Valls Ferrer, Juan Antonio Vos, Marcel |
| author_role |
author |
| author2 |
Aparisi Pozo, J.A. Bailey, A.J. Barranco, Laura Cabrera, Susana Castillo, F.L. Castillo Gimenez, M. V. Cerda Alberich, L. Costa, María José Escobar, Carlos Estrada, Oscar Ferrer, Antonio Fiorini, L. Fullana, Esteban Fuster, Juan García García, Carmen García Navarro, José Enrique González de la Hoz, Santiago Higón, Emilio Jimenez Pena, Javier Lacasta Llácer, Carlos Lozano Bahilo, José J. Madaffari, Daniele Mamuzic, Judita Martí García, Salvador Melini, Davide Miñano Moya, M. Mitsou, Vasiliki A. Rodriguez Bosca, S. Rodriguez Rodriguez, D. Ruiz Martínez, Arantxa Salt, José Santra, A. Sánchez Martínez, Javier Soldevila, Urmila Valero, Alberto Valls Ferrer, Juan Antonio Vos, Marcel |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Generalitat de Catalunya Ministerio de Economía y Competitividad (España) European Commission Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
ddc:530 ddc:500.2 |
| topic |
ddc:530 ddc:500.2 |
| description |
This paper presents measurements of WZ production cross sections in pp collisions at a centre-of-mass energy of 13 TeV. The data were collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider, and correspond to an integrated luminosity of 36.1fb-1. The WZ candidate events are reconstructed using leptonic decay modes of the gauge bosons into electrons and muons. The measured inclusive cross section in the detector fiducial region for a single leptonic decay mode is σW±Z→ℓ′νℓℓfid.=63.7±1.0(stat.)±2.3(syst.)±1.4(lumi.) fb, reproduced by the next-to-next-to-leading-order Standard Model prediction of 61.5-1.3+1.4 fb. Cross sections for WZ and WZ production and their ratio are presented as well as differential cross sections for several kinematic observables. An analysis of angular distributions of leptons from decays of W and Z bosons is performed for the first time in pair-produced events in hadronic collisions, and integrated helicity fractions in the detector fiducial region are measured for the W and Z bosons separately. Of particular interest, the longitudinal helicity fraction of pair-produced vector bosons is also measured. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019 2019 2019 2019 |
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info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://hdl.handle.net/10261/194071 |
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http://hdl.handle.net/10261/194071 |
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Springer Nature |
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Springer Nature |
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Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at √s=13TeV with the ATLAS detectorÁlvarez Piqueras, D.Aparisi Pozo, J.A.Bailey, A.J.Barranco, LauraCabrera, SusanaCastillo, F.L.Castillo Gimenez, M. V.Cerda Alberich, L.Costa, María JoséEscobar, CarlosEstrada, OscarFerrer, AntonioFiorini, L.Fullana, EstebanFuster, JuanGarcía García, CarmenGarcía Navarro, José EnriqueGonzález de la Hoz, SantiagoHigón, EmilioJimenez Pena, JavierLacasta Llácer, CarlosLozano Bahilo, José J.Madaffari, DanieleMamuzic, JuditaMartí García, SalvadorMelini, DavideMiñano Moya, M.Mitsou, Vasiliki A.Rodriguez Bosca, S.Rodriguez Rodriguez, D.Ruiz Martínez, ArantxaSalt, JoséSantra, A.Sánchez Martínez, JavierSoldevila, UrmilaValero, AlbertoValls Ferrer, Juan AntonioVos, Marcelddc:530ddc:500.2This paper presents measurements of WZ production cross sections in pp collisions at a centre-of-mass energy of 13 TeV. The data were collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider, and correspond to an integrated luminosity of 36.1fb-1. The WZ candidate events are reconstructed using leptonic decay modes of the gauge bosons into electrons and muons. The measured inclusive cross section in the detector fiducial region for a single leptonic decay mode is σW±Z→ℓ′νℓℓfid.=63.7±1.0(stat.)±2.3(syst.)±1.4(lumi.) fb, reproduced by the next-to-next-to-leading-order Standard Model prediction of 61.5-1.3+1.4 fb. Cross sections for WZ and WZ production and their ratio are presented as well as differential cross sections for several kinematic observables. An analysis of angular distributions of leptons from decays of W and Z bosons is performed for the first time in pair-produced events in hadronic collisions, and integrated helicity fractions in the detector fiducial region are measured for the W and Z bosons separately. Of particular interest, the longitudinal helicity fraction of pair-produced vector bosons is also measured.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 and DNSRC, Denmark; IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, 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; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, UK; DOE and NSF, USA. In addition, individual groups and members have received support from BCKDF, CANARIE, CRC and Compute Canada, Canada; COST, ERC, ERDF, Horizon 2020, and Marie Skłodowska-Curie Actions, European Union; Investissements d’ Avenir Labex and Idex, 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; CERCA Programme Generalitat de Catalunya, Spain; The Royal Society and Leverhulme Trust, UK. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, 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), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [106].Peer ReviewedSpringer NatureGeneralitat de CatalunyaMinisterio de Economía y Competitividad (España)European CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/194071reponame:DIGITAL.CSIC. 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15,81155 |