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Mostrando ítems 2581-2600 de 4423
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Observations of B0 s → ψ(2S)η and B0 (s) → ψ(2S)π+π− decays
(Nuclear Physics B, 2013, Vol. 871, No. 3, 2013-06)First observations of the B0s→ψ(2S)η,B0→ψ(2S)π+π− and B0s→ψ(2S)π+π− decays are made using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in proton–proton ... -
Measurement of relative branching fractions of B decays to ψ(2S) and J/ψ mesons
(The European Physical Journal C, 2012, Vol. 72, No. 2118, 2012-08)The relative rates of B-meson decays into J/ψ and ψ(2S) mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching fractions (B) are ... -
Ambivalencia emocional en The Last of Us. Las emociones en los videojuegos, entre la complejidad narrativa y la lealtad del jugador
(L’Atalante. Revista de estudios cinematográficos, núm. 31, 2021, 2021)Se propone aquí pensar la complejidad a través del análisis narratológico de las emociones videolúdicas, que tendrán una dimensión doble, la primera más relacionada con los recursos del lenguaje audiovisual ... -
Measurement of the forward energy flow in pp collisions at √s = 7 TeV
(The European Physical Journal C, 2013, Vol. 73, No. 2421, 2013-05)The energy flow created in pp collisions at √s = 7 TeV is studied within the pseudorapidity range 1.9 <η< 4.9 with data collected by the LHCb experiment. The measurements are performed for inclusive ... -
Determination of the quark coupling strength |Vub| using baryonic decays
(Nature Physics, 2015, Vol. 11, 2015-07)In the Standard Model of particle physics, the strength of the couplings of the b quark to the u and c quarks, |Vub| and |Vcb|, are governed by the coupling of the quarks to the Higgs boson. Using data ... -
Measurement of the CP-violating phase φsin B0s→J/ψπ+π−decays
(Physics Letters B, 2014, Vol. 736, 2014-09)The mixing-induced CP-violating phase in and decays is measured using the final state in data, taken from 3 fb−1 of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass ... -
Search for the doubly charmed baryon Ξ+ cc
(Journal of High Energy Physics, 2013, No. 90, 2013-12)A search for the doubly charmed baryon Ξ+ cc in the decay mode Ξ+ cc→ Λ + c K−π + is performed with a data sample, corresponding to an integrated luminosity of 0.65 fb−1 , of pp collisions recorded at ... -
New methods and technologies for enhancing usability and accessibility of educational data
(Universal Access in the Information Society, 2020, 2020-10) -
Small is big in ICT: The impact of R&D on productivity
(Telecommunications Policy, 2020, 2019-07)We examine the contribution of R&D to firm productivity in a large panel of European firms and study its variation with the age, size, and sub-sector of firms. We find that R&D capital in ICT firms has ... -
Evidence for the decay X(3872) →ψ(2S)γ
(Nuclear Physics B, 2014, Vol. 886, 2014-09)Evidence for the decay mode X(3872) →ψ(2S)γ in B+→X(3872)K+decays is found with a sig-nificance of 4.4 standard deviations. The analysis is based on a data sample of proton–proton collisions, corresponding ... -
Evolution of Decision Trees
(2001-10)This paper addresses the issue of the induction of orthogonal, oblique and multivariate decision trees. Algorithms proposed by other researchers use heuristic, usually based on the information gain ... -
Optimizacion de la accesibilidad web a partir de la experiencia de uso con usuarios discapacitados
(2009-06)La accesibilidad web, incluso la accesibilidad a espacios reales son conceptos ampliamente definidos en la mayoría de casos por expertos en el tema y habitualmente implementados por diseñadores o ... -
Measurement of the B0–B0 oscillation frequency md with the decays B0→D−π+ and B0→J/ψK∗0
(Physical Letters B, Vol. 719, 2013-01)The B0–B0oscillation frequency mdis measured by the LHCb experiment using a dataset correspondingto an integrated luminosity of 1.0fb−1of proton–proton collisions at√s=7TeV,and is found to be ... -
Measurement of the effective B0s→J/ψK0S lifetime
(Nuclear Physics B, 2013, Vol. 873, No. 2, 2013-08)This paper reports the first measurement of the effective B0s→J/ψK0S lifetime and an updated mea-surement of its time-integrated branching fraction. Both measurements are performed with a data sample, ... -
Measurement of the ¯¯¯ B 0 s Effective Lifetime in the J / ψ f 0 ( 980 ) Final State
(Physical Review Letters, 2012, Vol. 109, No. 15, 2012-10)The effective lifetime of the ¯¯¯ B 0 s meson in the decay mode ¯¯¯ B 0 s → J / ψ f 0 ( 980 ) is measured using 1.0 fb − 1 of data collected in p p collisions at √ s = 7 TeV with the ... -
Search for Rare B 0 ( s ) → μ + μ − μ + μ − Decays
(Physical Review Letters, 2013, Vol. 110, No. 21, 2013-05)A search for the decays B 0 s → μ + μ − μ + μ − and B 0 → μ + μ − μ + μ − is performed using data, corresponding to an integrated luminosity of 1.0 fb − 1 , collected with the LHCb detector in ... -
O cambiamos o los perdemos
(2019-07)Cada vez más, los alumnos que entran en la universidad demuestran que la manera que tienen de aprender y estudiar no es compatible con la mayoría de los métodos de enseñanza que existen habitualmente ... -
Utilizando analítica del aprendizaje en una clase invertida: Experiencia de uso en la asignatura de Sistemas Digitales y Microprocesadores
(2018-07)El modelo de clase invertida (o flipped classroom) permite al docente implementar actividades de aprendizaje activo en las sesiones presenciales dejando que el alumno trabaje los contenidos más teóricos ... -
COVID-19 Pandemic in the Italian Digital Media: Media Behavior and Citizen Information Consumption During the Health Crisis
(Media & Jornalismo, vol. 21, núm. 38, 2021, 2021)This article studies media behavior and information consumption during the COVID-19 health crisis using quantitative content analysis of the news published by Italian digital media between January 1 and ... -
El papel de la dieta mediática en la experiencia migratoria de la comunidad hispanoamericana. Repensando la recepción a través de las familias, las redes y los medios
(Migraciones, núm. 47, 2019, 2019)La dieta y los hábitos mediáticos de las comunidades inmigrantes han sido estudiados desde una perspectiva alejada de las propias interpretaciones de los protagonistas. En este artículo pondremos la ...