Articles publicats en revistes: Enviaments recents
Ara mostrant els elements 321-340 de 546
-
Measurement of the B^0_s - \bar{B}^0_s oscillation frequency Delta m_s in B^0_s → D_s^-(3) π decays
(Physics Letters B , 2012, Vol. 709, No. 3 (Març), 2012-03-19)The B^0_s-\bar{B}^0_s oscillation frequency Delta m_s is measured with 36 pb^{-1} of data collected in pp collisions at \sqrt{s} = 7 TeV by the LHCb experiment at the Large Hadron Collider. A total of ... -
Analysis of the resonant components in ¯B0s → J/ψ π+ π−
(Physical Review D, 2012, Vol. 86 , No.5 (Setembre), 2012-09-17)The decay ¯¯¯B0s→J/ψπ+π− can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state ... -
Measurement of the ratio of branching fractions B(B0→K*0γ)/B(B0s→ϕγ)
(Physical Review D, 2012, Vol. 85 , No.11 (Juny), 2012-06-25)The ratio of branching fractions of the radiative B decays B0→K*0γ and B0s→ϕγ has been measured using 0.37 fb−1 of pp collisions at a center of mass energy of √s=7 TeV, collected by the LHCb experiment. ... -
Álgebra aplicada en el mundo de las telecomunicaciones
(MSEL: Modelling in Science Education and Learning, 2008. Vol. 1 (Juny), 2008-06)En este documento se expone un ejercicio de modelización matemática que se propone a alumnos de ingeniería de telecomunicaciones durante el primer curso, en la asignatura de ´algebra lineal. Aunque la ... -
Aplicació de tècniques de generació automàtica de la parla en producció audiovisual
(Quaderns del CAC 37, 2011. Vol. 14, 2 (Desembre), 2011-12)En aquest article es presenta un resum del treball de recerca que porta el mateix títol, realitzat gràcies a l’ajut concedit pel CAC en la VII convocatòria d’Ajuts a projectes de recerca sobre ... -
Amplitude analysis and branching fraction measurement of ¯Bos → J/ψ K+K−
(Physical Review D, 2013, Vol. 87 , No.7 (Abril), 2013-04-08)An amplitude analysis of the final state structure in the ¯¯¯B0s→J/ψK+K− decay mode is performed using 1.0 fb−1 of data collected by the LHCb experiment in 7 TeV center-of-mass energy pp collisions ... -
Hacia una síntesis concatenativa de alta calidad para aplicaciones de conversión texto-habla
(Procesamiento del lenguaje natural, No 25 (1999), 1999)Este artículo describe nuevas líneas de investigación referentes a la síntesis concatenativa para la conversión texto-habla. La técnica TD-PSOLA supuso un salto importante en cuanto a la mejora de la ... -
New Framework and Mechanisms of Context‐Aware Service Composition in the Future Internet
(ETRI Journal, 2013. Vol. 35, 1, (Febrer), 2013-02)The ongoing proliferation of new services, applications, and contents is leading the Internet to an architectural crisis owing to its inability to provide efficient solutions to new requirements. ... -
Search for Hidden-Sector Bosons in B0→K*0μ+μ− Decays
(Physical Review Letters, 2015, Vol. 115, No. 16 (Octubre), 2015-10-16)A search is presented for hidden-sector bosons, χ, produced in the decay B0→K∗(892)0χ, with K∗(892)0→K+π− and χ→μ+μ−. The search is performed using pp-collision data corresponding to 3.0 fb−1 collected ... -
Observation of ¯B0(s)→J/ψ f1(1285) Decays and Measurement of the f1(1285) Mixing Angle
(Physical Review Letters, 2014, Vol. 112, No. 9 (Març), 2014-03-04)Decays of ¯B0s and ¯B0 mesons into J/ψ π+π−π+π− final states, produced in pp collisions at the LHC, are investigated using data corresponding to an integrated luminosity of 3 fb−1 collected with the ... -
Measurement of the Λ0b, Ξ−b, and Ω−b Baryon Masses
(Physical Review Letters, 2013, Vol. 110, No. 18 (Maig), 2013-05-02)Bottom baryons decaying to a J/ψ meson and a hyperon are reconstructed using 1.0 fb−1 of data collected in 2011 with the LHCb detector. Significant Λ0b→J/ψΛ, Ξ−b→J/ψΞ− and Ω−b→J/ψΩ− signals are observed ... -
Measurement of the CP Asymmetry in B0→K*0μ+μ− Decays
(Physical Review Letters, 2013, Vol. 110, No. 3 (Gener), 2013-01-17)A measurement of the CP asymmetry in B0→K*0μ+μ− decays is presented, based on 1.0 fb−1 of pp collision data recorded by the LHCb experiment during 2011. The measurement is performed in six bins of ... -
Determination of fs/fd for 7 TeV pp Collisions and Measurement of the B0→D−K+ Branching Fraction
(Physical Review Letters, 2011, Vol. 107, No. 21 (Novembre), 2011-11-14)The relative abundance of the three decay modes B0→D−K+, B0→D−π+, and B0s→D−sπ+ produced in 7 TeV pp collisions at the LHC is determined from data corresponding to an integrated luminosity of 35 pb−1. ... -
Measurements of Bþ c Production and Mass with the Bþ c ! J=c þ Decay
(Physical Review Letters, 2012, Vol. 109, No. 23 (Desembre), 2012-12-05)Measurements of B+c production and mass are performed with the decay mode B+c→J/ψπ+ using 0.37 fb−1 of data collected in pp collisions at √s=7 TeV by the LHCb experiment. The ratio of the production ... -
First Observation of CP Violation in the Decays of B0s Mesons
(Physical Review Letters, 2013, Vol. 110, No. 22 (Maig), 2013-05-30)Using pp collision data corresponding to an integrated luminosity of 1.0 fb−1 and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in ... -
Measurement of D0–¯¯¯D0 Mixing Parameters and Search for CP Violation Using D0→K+π− Decays
(Physical Review Letters, 2013, Vol. 111, No. 25 (Desembre), 2013-12-18)Measurements of charm mixing parameters from the decay-time-dependent ratio of D0→K+π− to D0→K−π+ rates and the charge-conjugate ratio are reported. The analysis uses data, corresponding to 3 fb−1 of ... -
Measurement of B+c Production in Proton-Proton Collisions at √s=8 TeV
(Physical Review Letters, 2015, Vol. 114, No. 13 (Abril), 2015-04-02)Production of B+c mesons in proton-proton collisions at a center-of-mass energy of 8 TeV is studied with data corresponding to an integrated luminosity of 2.0 fb−1 recorded by the LHCb experiment. The ... -
Observation of Overlapping Spin-1 and Spin-3 ¯D0K− Resonances at Mass 2.86 GeV/c2
(Physical Review Letters, 2014, Vol. 113, No. 16 (Octubre), 2014-10-14)The resonant substructure of B0s→¯D0K−π+ decays is studied using a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collision data recorded by the LHCb detector. An excess at ... -
Observation of J/ψp Resonances Consistent with Pentaquark States in Λ0b→J/ψK−p Decays
(Physical Review Letters, 2015, Vol. 115, No. 7 (Agost), 2015-08-12)Observations of exotic structures in the J/ψp channel, which we refer to as charmonium-pentaquark states, in Λ0b→J/ψK−p decays are presented. The data sample corresponds to an integrated luminosity of ... -
Search for Majorana Neutrinos in B−→π+μ−μ− Decays
(Physical Review Letters, 2014, Vol. 112, No. 13 (Abril), 2014-04-03)A search for heavy Majorana neutrinos produced in the B−→π+μ−μ− decay mode is performed using 3 fb−1 of integrated luminosity collected with the LHCb detector in pp collisions at center-of-mass energies ...