Search of the B c + → η c μ + ν μ decay with LHCb data.

dc.contributor.advisorMilanés Carreño, Diego Alejandro
dc.contributor.authorGómez Arias, Santiago
dc.contributor.researchgroupGrupo de Partículas Fenyx-Unspa
dc.date.accessioned2023-03-28T21:42:49Z
dc.date.available2023-03-28T21:42:49Z
dc.date.issued2023
dc.descriptionilustracionesspa
dc.description.abstractUsing pp collisions corresponding to 4fb −1 integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 13TeV, the ratio of branching fractions B(B c + → η c μ + ν μ )/B(B c → J/ψ μ ν μ )= (3.49 ± 0.86 stat. ± 0.20 syst. ± 0.34 PDG ) × 10 −1 , is determined, where the first uncertainty is statistical, the second systematic and the third come from the experimental measurement of the branching fractions η c → pp̄ and J/ψ → pp̄. There has been found evidence of the existence of the B c + → η c μ + ν μ decay at 3.7σ, including statistical and systematic uncertainties. (Texto tomado de la fuente)eng
dc.description.abstractUsando colisiones pp correspondientes a una luminosidad integrada de 4fb −1 , registrada por el experimento LHCb en energías de centro de masa de 13TeV, la relación B(B c + → η c μ + ν μ )/B(B c + → J/ψ μ + ν μ ) = (3.49 ± 0.86 stat. ± 0.20 syst. ± 0.34 PDG ) × 10 −1 , es determinada, donde la primera incertidumbre es estadística, la segunda sistemática y la tercera proviene de la medición experimental de las tasas de desintegración η c → pp̄ y J/ψ → pp̄. Se ha encontrado evidencia de la existencia de la desintegración B c + → η c μ + ν μ a 3.7σ, incluyendo incertidumbres estadísticas y sistemáticas.spa
dc.description.degreelevelMaestríaspa
dc.description.researchareaFísica experimental de partículas.spa
dc.format.extentix, 69 páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/83663
dc.language.isoengspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotáspa
dc.publisher.facultyFacultad de Cienciasspa
dc.publisher.placeBogotá, Colombiaspa
dc.publisher.programBogotá - Ciencias - Maestría en Ciencias - Físicaspa
dc.relation.referencesM. Arneodo and others. Measurement of the proton and the deuteron structure functions, F 2 p and F 2 d . Phys. Lett. B, 364:107–115. 23 p, Sep 1995.spa
dc.relation.referencesR. Aaij et al. Measurement of the ratio of branching fractions B(B c +J/ψτ + ν τ )/B(B c + → J/ψμ + ν μ ). Phys. Rev. Lett., 120:121801, Mar 2018.spa
dc.relation.referencesFayyazuddin and Riazuddin. A modern introduction to particle physics. World scientific publishing, Singapore, 2000.spa
dc.relation.referencesSimone Bifani, Sébastien Descotes-Genon, Antonio Romero Vidal, and Marie-Hélène Schune. Review of lepton universality tests in b decays. Journal of Physics G: Nuclear and Particle Physics, 46(2):023001, dec 2018.spa
dc.relation.referencesR. Aaij et al. Test of lepton universality with Λ 0 b → pK− l− l+ decays. Journal of High Energy Physics, 2020(5):40, May 2020.spa
dc.relation.referencesR. Aaij et al. Tests of lepton universality using B 0 → K_s^0 l -l+ and B + → K ∗+ l− l+ decays. Physical Review Letters, 128(19), may 2022.spa
dc.relation.referencesR. Aaij et al. Test of lepton universality using B + → K + l− l + decays. Physical Review Letters, 113(15), oct 2014.spa
dc.relation.referencesR. Aaij et al. Test of lepton universality with B 0 → K 0∗ l− l + decays. Journal of High Energy Physics, 2017(8), aug 2017.spa
dc.relation.referencesR. Aaij et al. Test of lepton universality in beauty-quark decays, 2021.spa
dc.relation.referencesEvidence for an excess of B → D (∗) τ ν τ decays. Physical Review Letters, 109(10), sep 2012.spa
dc.relation.referencesY. Sato et al. Measurement of an excess of B → D (∗) τ ν τ decays and implications for charged higgs bosons. Physical Review D, 88(7), oct 2013.spa
dc.relation.referencesY. Sato et al. Measurement of the branching ratio of B̄ → D (∗) τ − ν̄ τ relative to B̄ →D (∗) l− ν̄ decays with hadronic tagging at belle. Physical Review D, 92(7), oct 2015.spa
dc.relation.referencesY. Sato et al. Measurement of R(D) and R(D ∗ ) with a semileptonic tagging method. Phys. Rev. Lett., 124:161803, Apr 2020.spa
dc.relation.referencesY. Sato et al. Measurement of the τ lepton polarization and R D ∗ in the decay B̄ →D ∗ τ − ν̄ τ . Physical Review Letters, 118(21), may 2017.spa
dc.relation.referencesR. Aaij et al. Measurement of the ratio of branching fractions B(B̄0 → D∗+ τ- ν̄τ)/B (B̄0 → D∗+ μ− ν̄ μ) . Phys. Rev. Lett., 115:111803, Sep 2015.spa
dc.relation.referencesR. Aaij et al. Test of lepton flavor universality by the measurement of the B 0 →D∗− τ+ ντ branching fraction using three-prong τ decays. Phys. Rev. D, 97:072013, Apr 2018.spa
dc.relation.referencesR. Aaij et al. Measurement of the ratio of the B 0 → D∗− τ+ ντ and B0→D∗− μ+ νμ branching fractions using three-prong τ -lepton decays. Phys. Rev. Lett., 120:171802, Apr 2018.spa
dc.relation.referencesG. Ciezarek and others. First joint measurement of R D ∗ and R D 0 at LHCb. https://indico.cern.ch/event/1187939/, 2022.spa
dc.relation.referencesY. Amhis and others. Averages of b-hadron, c-hadron, and τ -lepton properties as of summer 2016. The European Physical Journal C, 77(12):895, Dec 2017.spa
dc.relation.referencesAverage of R D and R D ∗ for end of 2022. https://hflav-eos.web.cern.ch/hflav-eos/semi/fall22/html/RDsDsstar/RDRDs.html, 2022.spa
dc.relation.referencesR. Aaij et al. Observation of the decay Λ0b → Λ+c τ ν̄ τ . Phys. Rev. Lett., 128:191803, May 2022.spa
dc.relation.referencesMikhail A. Ivanov, Juergen G. Körner, and Pietro Santorelli. Semileptonic decays of Bc mesons into charmonium states in a relativistic quark model. Phys. Rev. D, 71:094006, May 2005.spa
dc.relation.referencesE. Hernández, J. Nieves, and J. M. Verde-Velasco. Study of exclusive semileptonic and nonleptonic decays of B c − in a nonrelativistic quark model. Phys. Rev. D, 74:074008, Oct 2006.spa
dc.relation.referencesRupak Dutta and Anupama Bhol. B c → (J/ψ, η c )τ ν semileptonic decays within the standard model and beyond. Phys. Rev. D, 96:076001, Oct 2017.spa
dc.relation.referencesWen-Fei Wang, Ying-Ying Fan, and Zhen-Jun Xiao. Semileptonic decays B c →(J/ψ, η c )lν in the perturbative QCD approach. Chinese Physics C, 37(9):093102, sep 2013.spa
dc.relation.referencesRyoutaro Watanabe. New physics effect on B c → J/ψτ ν in relation to the RD(∗) anomaly. Physics Letters B, 776:5–9, 2018.spa
dc.relation.referencesCERN. Lhc. https://home.cern/science/accelerators/large-hadron-collider, 2018.spa
dc.relation.referencesFermilab. Tevatron. http://www.fnal.gov/pub/tevatron/tevatron-accelerator.html, 2018.spa
dc.relation.referencesLHCb Collaboration. The lhcb detector. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Detector-en.html, 2008.spa
dc.relation.referencesLHCb Collaboration. The lhcb detector at the lhc. Journal of Instrumentation, 2008.spa
dc.relation.referencesLHCb Collaboration. Lhcb material for presentations. http://lhcb.web.cern.ch/lhcb/speakersbureau/html/Material_for_Presentations.html, 2008.spa
dc.relation.referencesLHCb Collaboration. Vertex locator (velo). http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/VELO-en.html, 2008.spa
dc.relation.referencesLHCb Collaboration. Tracking system. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Trackers2-en.html, 2008.spa
dc.relation.referencesMeißner. Measurements of particle production and particle correlations in proton-proton and proton-ion collisions with lhcb, 2015.spa
dc.relation.referencesLHCb Collaboration. Inner tracker technical design report, 2002.spa
dc.relation.referencesLHCb Collaboration. Rich detector. https://lhcb-public.web.cern.ch/en/detector/RICH2-en.html, 2018.spa
dc.relation.referencesLHCb Collaboration. Calorimeter system. http://lhcb-public.web.cern.ch/en/detector/Calorimeters2-en.html, 2018.spa
dc.relation.referencesLHCb Collaboration. Muon system. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Muon-en.html, 2008.spa
dc.relation.referencesR. Aaij et al. Muon system technical design report.spa
dc.relation.referencesM. Tanabashi et al. Review of particle physics. Phys. Rev., D98:030001, 2018. and 2019 update.spa
dc.relation.referencesGiovanni Punzi. Sensitivity of searches for new signals and its optimization. eConf, C030908:MODT002, 2003.spa
dc.relation.referencesWen-Fei Wang, Ying-Ying Fan, and Zhen-Jun Xiao. Semileptonic decays B c →(J/Ψ, η c )lν in the perturbative QCD approach. Chinese Physics C, 37(9):093102, Sep 2013.spa
dc.relation.referencesE. Hernández, J. Nieves, and J. M. Verde-Velasco. Study of exclusive semileptonic and nonleptonic decays of B c in a nonrelativistic quark model. Physical Review D, 74(7), Oct 2006.spa
dc.relation.referencesV.V. Kiselev, A.K. Likhoded, and A.I. Onishchenko. Semileptonic B c -meson decays in sum rules of QCD and NRQCD. Nuclear Physics B, 569(1-3):473–504, mar 2000.spa
dc.relation.referencesMikhail A. Ivanov, Jürgen G. Körner, and Pietro Santorelli. Exclusive semileptonic and nonleptonic decays of the B c meson. Physical Review D, 73(5), mar 2006.spa
dc.relation.referencesD. Ebert, R. N. Faustov, and V. O. Galkin. Weak decays of the B c meson to charmonium and D mesons in the relativistic quark model. Phys. Rev. D, 68:094020, Nov 2003.spa
dc.relation.referencesChao-Hsi Chang and Yu-Qi Chen. Decays of the B c meson. Phys. Rev. D, 49:3399–3411, Apr 1994.spa
dc.relation.referencesA. Abd El-Hady, J. H. Muñoz, and J. P. Vary. Semileptonic and nonleptonic B c decays. Phys. Rev. D, 62:014019, Jun 2000.spa
dc.relation.referencesV.V Kiselev, A.E Kovalsky, and A.K Likhoded. B c decays and lifetime in QCD sum rules. Nuclear Physics B, 585(1-2):353–382, oct 2000.spa
dc.relation.referencesAidos Issadykov and Mikhail A. Ivanov. The decays B c → J/ψ lν and B c → J/ψπ(K) in covariant confined quark model. Physics Letters B, 783:178–182, aug 2018.spa
dc.relation.referencesA. Anisimov, P. Yu. Kulikov, I. M. Narodetskii, and K. A. Ter-Martirosyan. Exclusive and inclusive decays of the B c meson in the light-front isgw model. 1998.spa
dc.relation.referencesMikhail A. Ivanov, Jürgen G. Körner, and Pietro Santorelli. Semileptonic and nonleptonic decays of B c . In Guido Montagna, Oreste Nicrosini, and Valerio Vercesi, editors, IFAE 2006, pages 251–255, Milano, 2007. Springer Milan.spa
dc.relation.referencesRyoutaro Watanabe. New physics effect on B c → J/Ψτ ν τ in relation to the RD∗ anomaly. Physics Letters B, 776:5–9, Jan 2018.spa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseAtribución-NoComercial 4.0 Internacionalspa
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/spa
dc.subject.proposalLHCbspa
dc.subject.proposalHadrones bspa
dc.subject.proposalCharmoniaspa
dc.subject.proposalDesintegraciones semileptónicasspa
dc.subject.proposalAnálisis multivariadospa
dc.subject.proposalÁrboles de decisionesspa
dc.subject.proposalPruebas a la universalidad leptónicaspa
dc.subject.proposalHadroneng
dc.subject.proposalCharmoniumeng
dc.subject.proposalSemileptonic decayseng
dc.subject.proposalMultivariate analysiseng
dc.subject.proposalBoosted Decision Treeeng
dc.subject.proposalLepton Flavor Universality teseng
dc.titleSearch of the B c + → η c μ + ν μ decay with LHCb data.eng
dc.title.translatedBúsqueda de la desintegración B c + → η c μ + ν μ con datos del LHCb.spa
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.redcolhttp://purl.org/redcol/resource_type/TMspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
dcterms.audience.professionaldevelopmentEstudiantesspa
dcterms.audience.professionaldevelopmentInvestigadoresspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa
oaire.awardtitleLHCbspa

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