Search of the B c + → η c μ + ν μ decay with LHCb data.
ilustraciones
- Autores:
-
Gómez Arias, Santiago
- Tipo de recurso:
- Fecha de publicación:
- 2023
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/83663
- Palabra clave:
- LHCb
Hadrones b
Charmonia
Desintegraciones semileptónicas
Análisis multivariado
Árboles de decisiones
Pruebas a la universalidad leptónica
Hadron
Charmonium
Semileptonic decays
Multivariate analysis
Boosted Decision Tree
Lepton Flavor Universality tes
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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|
| dc.title.eng.fl_str_mv |
Search of the B c + → η c μ + ν μ decay with LHCb data. |
| dc.title.translated.spa.fl_str_mv |
Búsqueda de la desintegración B c + → η c μ + ν μ con datos del LHCb. |
| title |
Search of the B c + → η c μ + ν μ decay with LHCb data. |
| spellingShingle |
Search of the B c + → η c μ + ν μ decay with LHCb data. LHCb Hadrones b Charmonia Desintegraciones semileptónicas Análisis multivariado Árboles de decisiones Pruebas a la universalidad leptónica Hadron Charmonium Semileptonic decays Multivariate analysis Boosted Decision Tree Lepton Flavor Universality tes |
| title_short |
Search of the B c + → η c μ + ν μ decay with LHCb data. |
| title_full |
Search of the B c + → η c μ + ν μ decay with LHCb data. |
| title_fullStr |
Search of the B c + → η c μ + ν μ decay with LHCb data. |
| title_full_unstemmed |
Search of the B c + → η c μ + ν μ decay with LHCb data. |
| title_sort |
Search of the B c + → η c μ + ν μ decay with LHCb data. |
| dc.creator.fl_str_mv |
Gómez Arias, Santiago |
| dc.contributor.advisor.none.fl_str_mv |
Milanés Carreño, Diego Alejandro |
| dc.contributor.author.none.fl_str_mv |
Gómez Arias, Santiago |
| dc.contributor.researchgroup.spa.fl_str_mv |
Grupo de Partículas Fenyx-Un |
| dc.subject.proposal.spa.fl_str_mv |
LHCb Hadrones b Charmonia Desintegraciones semileptónicas Análisis multivariado Árboles de decisiones Pruebas a la universalidad leptónica |
| topic |
LHCb Hadrones b Charmonia Desintegraciones semileptónicas Análisis multivariado Árboles de decisiones Pruebas a la universalidad leptónica Hadron Charmonium Semileptonic decays Multivariate analysis Boosted Decision Tree Lepton Flavor Universality tes |
| dc.subject.proposal.eng.fl_str_mv |
Hadron Charmonium Semileptonic decays Multivariate analysis Boosted Decision Tree Lepton Flavor Universality tes |
| description |
ilustraciones |
| publishDate |
2023 |
| dc.date.accessioned.none.fl_str_mv |
2023-03-28T21:42:49Z |
| dc.date.available.none.fl_str_mv |
2023-03-28T21:42:49Z |
| dc.date.issued.none.fl_str_mv |
2023 |
| dc.type.spa.fl_str_mv |
Trabajo de grado - Maestría |
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info:eu-repo/semantics/masterThesis |
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info:eu-repo/semantics/acceptedVersion |
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Text |
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http://purl.org/redcol/resource_type/TM |
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acceptedVersion |
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https://repositorio.unal.edu.co/handle/unal/83663 |
| dc.identifier.instname.spa.fl_str_mv |
Universidad Nacional de Colombia |
| dc.identifier.reponame.spa.fl_str_mv |
Repositorio Institucional Universidad Nacional de Colombia |
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https://repositorio.unal.edu.co/ |
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https://repositorio.unal.edu.co/handle/unal/83663 https://repositorio.unal.edu.co/ |
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Universidad Nacional de Colombia Repositorio Institucional Universidad Nacional de Colombia |
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eng |
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eng |
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M. 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. R. 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. Fayyazuddin and Riazuddin. A modern introduction to particle physics. World scientific publishing, Singapore, 2000. Simone 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. R. 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. R. 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. R. Aaij et al. Test of lepton universality using B + → K + l− l + decays. Physical Review Letters, 113(15), oct 2014. R. Aaij et al. Test of lepton universality with B 0 → K 0∗ l− l + decays. Journal of High Energy Physics, 2017(8), aug 2017. R. Aaij et al. Test of lepton universality in beauty-quark decays, 2021. Evidence for an excess of B → D (∗) τ ν τ decays. Physical Review Letters, 109(10), sep 2012. Y. 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. Y. 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. Y. Sato et al. Measurement of R(D) and R(D ∗ ) with a semileptonic tagging method. Phys. Rev. Lett., 124:161803, Apr 2020. Y. 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. R. 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. R. 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. R. 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. G. Ciezarek and others. First joint measurement of R D ∗ and R D 0 at LHCb. https://indico.cern.ch/event/1187939/, 2022. Y. 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. Average 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. R. Aaij et al. Observation of the decay Λ0b → Λ+c τ ν̄ τ . Phys. Rev. Lett., 128:191803, May 2022. Mikhail 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. E. 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. Rupak 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. Wen-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. Ryoutaro Watanabe. New physics effect on B c → J/ψτ ν in relation to the RD(∗) anomaly. Physics Letters B, 776:5–9, 2018. CERN. Lhc. https://home.cern/science/accelerators/large-hadron-collider, 2018. Fermilab. Tevatron. http://www.fnal.gov/pub/tevatron/tevatron-accelerator.html, 2018. LHCb Collaboration. The lhcb detector. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Detector-en.html, 2008. LHCb Collaboration. The lhcb detector at the lhc. Journal of Instrumentation, 2008. LHCb Collaboration. Lhcb material for presentations. http://lhcb.web.cern.ch/lhcb/speakersbureau/html/Material_for_Presentations.html, 2008. LHCb Collaboration. Vertex locator (velo). http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/VELO-en.html, 2008. LHCb Collaboration. Tracking system. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Trackers2-en.html, 2008. Meißner. Measurements of particle production and particle correlations in proton-proton and proton-ion collisions with lhcb, 2015. LHCb Collaboration. Inner tracker technical design report, 2002. LHCb Collaboration. Rich detector. https://lhcb-public.web.cern.ch/en/detector/RICH2-en.html, 2018. LHCb Collaboration. Calorimeter system. http://lhcb-public.web.cern.ch/en/detector/Calorimeters2-en.html, 2018. LHCb Collaboration. Muon system. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Muon-en.html, 2008. R. Aaij et al. Muon system technical design report. M. Tanabashi et al. Review of particle physics. Phys. Rev., D98:030001, 2018. and 2019 update. Giovanni Punzi. Sensitivity of searches for new signals and its optimization. eConf, C030908:MODT002, 2003. Wen-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. E. 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. V.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. Mikhail 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. D. 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. Chao-Hsi Chang and Yu-Qi Chen. Decays of the B c meson. Phys. Rev. D, 49:3399–3411, Apr 1994. A. Abd El-Hady, J. H. Muñoz, and J. P. Vary. Semileptonic and nonleptonic B c decays. Phys. Rev. D, 62:014019, Jun 2000. V.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. Aidos 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. A. 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. Mikhail 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. Ryoutaro 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. |
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Facultad de Ciencias |
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Bogotá, Colombia |
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Universidad Nacional de Colombia - Sede Bogotá |
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Atribución-NoComercial 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Milanés Carreño, Diego Alejandro0cb1fc6bacb170f2b17b9f31777bf004Gómez Arias, Santiago95b20b6073b9313cc6dc4eb76ed688f8Grupo de Partículas Fenyx-Un2023-03-28T21:42:49Z2023-03-28T21:42:49Z2023https://repositorio.unal.edu.co/handle/unal/83663Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustracionesUsing 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)Usando 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.MaestríaFísica experimental de partículas.ix, 69 páginasapplication/pdfengSearch of the B c + → η c μ + ν μ decay with LHCb data.Búsqueda de la desintegración B c + → η c μ + ν μ con datos del LHCb.Trabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TMBogotá - Ciencias - Maestría en Ciencias - FísicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede BogotáM. 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.R. 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.Fayyazuddin and Riazuddin. A modern introduction to particle physics. World scientific publishing, Singapore, 2000.Simone 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.R. 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.R. 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.R. Aaij et al. Test of lepton universality using B + → K + l− l + decays. Physical Review Letters, 113(15), oct 2014.R. Aaij et al. Test of lepton universality with B 0 → K 0∗ l− l + decays. Journal of High Energy Physics, 2017(8), aug 2017.R. Aaij et al. Test of lepton universality in beauty-quark decays, 2021.Evidence for an excess of B → D (∗) τ ν τ decays. Physical Review Letters, 109(10), sep 2012.Y. 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.Y. 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.Y. Sato et al. Measurement of R(D) and R(D ∗ ) with a semileptonic tagging method. Phys. Rev. Lett., 124:161803, Apr 2020.Y. 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.R. 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.R. 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.R. 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.G. Ciezarek and others. First joint measurement of R D ∗ and R D 0 at LHCb. https://indico.cern.ch/event/1187939/, 2022.Y. 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.Average 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.R. Aaij et al. Observation of the decay Λ0b → Λ+c τ ν̄ τ . Phys. Rev. Lett., 128:191803, May 2022.Mikhail 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.E. 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.Rupak 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.Wen-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.Ryoutaro Watanabe. New physics effect on B c → J/ψτ ν in relation to the RD(∗) anomaly. Physics Letters B, 776:5–9, 2018.CERN. Lhc. https://home.cern/science/accelerators/large-hadron-collider, 2018.Fermilab. Tevatron. http://www.fnal.gov/pub/tevatron/tevatron-accelerator.html, 2018.LHCb Collaboration. The lhcb detector. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Detector-en.html, 2008.LHCb Collaboration. The lhcb detector at the lhc. Journal of Instrumentation, 2008.LHCb Collaboration. Lhcb material for presentations. http://lhcb.web.cern.ch/lhcb/speakersbureau/html/Material_for_Presentations.html, 2008.LHCb Collaboration. Vertex locator (velo). http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/VELO-en.html, 2008.LHCb Collaboration. Tracking system. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Trackers2-en.html, 2008.Meißner. Measurements of particle production and particle correlations in proton-proton and proton-ion collisions with lhcb, 2015.LHCb Collaboration. Inner tracker technical design report, 2002.LHCb Collaboration. Rich detector. https://lhcb-public.web.cern.ch/en/detector/RICH2-en.html, 2018.LHCb Collaboration. Calorimeter system. http://lhcb-public.web.cern.ch/en/detector/Calorimeters2-en.html, 2018.LHCb Collaboration. Muon system. http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/Muon-en.html, 2008.R. Aaij et al. Muon system technical design report.M. Tanabashi et al. Review of particle physics. Phys. Rev., D98:030001, 2018. and 2019 update.Giovanni Punzi. Sensitivity of searches for new signals and its optimization. eConf, C030908:MODT002, 2003.Wen-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.E. 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.V.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.Mikhail 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.D. 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.Chao-Hsi Chang and Yu-Qi Chen. Decays of the B c meson. Phys. Rev. D, 49:3399–3411, Apr 1994.A. Abd El-Hady, J. H. Muñoz, and J. P. Vary. Semileptonic and nonleptonic B c decays. Phys. Rev. D, 62:014019, Jun 2000.V.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.Aidos 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.A. 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.Mikhail 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.Ryoutaro 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.LHCbHadrones bCharmoniaDesintegraciones semileptónicasAnálisis multivariadoÁrboles de decisionesPruebas a la universalidad leptónicaHadronCharmoniumSemileptonic decaysMultivariate analysisBoosted Decision TreeLepton Flavor Universality tesLHCbEstudiantesInvestigadoresTHUMBNAILThesis.pdf.jpgThesis.pdf.jpgGenerated Thumbnailimage/jpeg3895https://repositorio.unal.edu.co/bitstream/unal/83663/3/Thesis.pdf.jpgf92f1bf06cb13a3f3fcb40f64a2cc15eMD53LICENSElicense.txtlicense.txttext/plain; charset=utf-85879https://repositorio.unal.edu.co/bitstream/unal/83663/1/license.txteb34b1cf90b7e1103fc9dfd26be24b4aMD51ORIGINALThesis.pdfThesis.pdfTesis de Maestría en Ciencias - Físicaapplication/pdf5511428https://repositorio.unal.edu.co/bitstream/unal/83663/2/Thesis.pdfdd72e583ffb777ab58ff9041093afd49MD52unal/83663oai:repositorio.unal.edu.co:unal/836632023-07-27 23:03:33.862Repositorio Institucional Universidad Nacional de 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