Aller au contenu principal
Accès ouvert déclaré 2018 article

Measurement of $Z\rightarrow\tau^+\tau^-$ production in proton-proton collisions at $\sqrt{s} = 8$ TeV

9Citations signalées, ce qui n’est pas une note de qualité
103Institutions déclarées
17Pays d’affiliation déclarés

Rattachement africain : nl, es, gb, us, fr, it, de, ch, ru, br, pl, cn, ro, ua, ie, co, hn. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

A measurement of Z → τ +τ − production cross-section is presented using data, corresponding to an integrated luminosity of 2 fb−1, from pp collisions at s√=8 TeV collected by the LHCb experiment. The τ +τ − candidates are reconstructed in final states with the first tau lepton decaying leptonically, and the second decaying either leptonically or to one or three charged hadrons. The production cross-section is measured for Z bosons with invariant mass between 60 and 120 GeV/c2, which decay to tau leptons with transverse momenta greater than 20 GeV/c and pseudorapidities between 2.0 and 4.5. The cross-section is determined to be σpp→Z→τ+τ−=95.8±2.1±4.6±0.2±1.1 pb, where the first uncertainty is statistical, the second is systematic, the third is due to the LHC beam energy uncertainty, and the fourth to the integrated luminosity uncertainty. This result is compatible with NNLO Standard model predictions. The ratio of the cross-sections for Z → τ+τ− to Z → μ+μ− (Z → e+e−), determined to be 1.01 ± 0.05 (1.02 ± 0.06), is consistent with the lepton-universality hypothesis in Z decays.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.

Le contrôle bibliographique ouvert

La source scientifique ouverte est momentanément indisponible.

Les institutions déclarées

National Institute for Subatomic PhysicsUniversidade de Santiago de CompostelaUniversity of BristolUniversity of MichiganCentre National de la Recherche ScientifiqueUniversité Clermont AuvergneInstitut National de Physique Nucléaire et de Physique des ParticulesClermont UniversitéUniversity of CincinnatiIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiTU Dortmund UniversityEuropean Organization for Nuclear ResearchUniversity of GlasgowUniversitat de BarcelonaPetersburg Nuclear Physics InstituteImperial College LondonUniversidade Federal do Rio de JaneiroIstituto Nazionale di Fisica Nucleare, Sezione di PadovaUniversité Paris-SudUniversité Paris-SaclayIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeÉcole Polytechnique Fédérale de LausanneIstituto Nazionale di Fisica Nucleare, Sezione di FerraraUniversity of Maryland, College ParkUniversity of ManchesterHeidelberg UniversityAix-Marseille UniversitéCentre de physique des particules de MarseilleInstitute for High Energy PhysicsSyracuse UniversityYandex School of Data AnalysisUniversity of ZurichUniversity of WarwickNational University of Science and TechnologyNational Centre for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di PisaCentro Brasileiro de Pesquisas FísicasUniversity of Chinese Academy of SciencesIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaInstitute for Theoretical and Experimental PhysicsDélégation Paris 7Université Paris CitéSorbonne UniversitéSorbonne Paris CitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesRWTH Aachen UniversityLomonosov Moscow State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of CambridgeInstitute of Nuclear Physics, Polish Academy of SciencesUniversity of BirminghamUniversity of OxfordIstituto Nazionale di Fisica Nucleare, Sezione di Roma IMassachusetts Institute of TechnologyUniversity of LiverpoolIstituto Nazionale di Fisica Nucleare, Sezione di CagliariWuhan UniversityIstituto Nazionale di Fisica Nucleare, Roma Tor VergataIstituto Nazionale di Fisica Nucleare, Sezione di GenovaUniversity of EdinburghUniversité Savoie Mont BlancUniversité Grenoble AlpesTsinghua UniversityHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringLos Alamos National LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di BariMax Planck Institute for Nuclear PhysicsAGH University of KrakowCentral China Normal UniversityKharkiv Institute of Physics and TechnologyRutherford Appleton LaboratorySiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsInstitute for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversitat de ValènciaInstituto de Física CorpuscularUniversity of RostockPontifícia Universidade Católica do Rio de JaneiroInstitute for Nuclear ResearchKurchatov InstituteLaboratoire Leprince-RinguetUniversity College DublinUniversidad Nacional de ColombiaZamorano Pan-American Agricultural SchoolUniversity of GroningenNational Research Tomsk State UniversityTomsk Polytechnic UniversityUniversity of FerraraUniversity of BolognaUniversity of GenoaUniversity of PisaUniversity of CagliariUniversity of Rome Tor VergataSapienza University of RomeUniversity of BasilicataNovosibirsk State UniversityUniversity of PaduaUniversity of Bari Aldo MoroUniversity of UrbinoUniversitat Ramon LlullP.N. Lebedev Physical Institute of the Russian Academy of SciencesShaanxi Normal University

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Particle physics theoretical and experimental studiesHigh-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle Interactions

BNTIC News n’est pas le producteur de ces données. Les publications sont interrogées à la demande dans Crossref, OpenAIRE, DOAJ, Europe PMC, HAL, DataCite, AfricArXiv, ROR et la Banque mondiale, sans clé d’accès. OpenAlex reste optionnel. Aucun service payant n’est nécessaire et aucune donnée externe n’est enregistrée en base. Consulter les sources et leurs limites.