La Salle: Recent submissions
Now showing items 901-920 of 1094
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First Observation of the Decay B+c→J/ψπ+π−π+
(Physical Review Letters, 2012, Vol. 108, No. 25 (Juny), 2012-06-19)The decay B+c→J/ψπ+π−π+ is observed for the first time, using 0.8 fb−1 of pp collisions at √s=7 TeV collected by the LHCb experiment. The ratio of branching fractions B(B+c→J/ψπ+π−π+)/B(B+c→J/ψπ+) is ... -
Evidence for the Strangeness-Changing Weak Decay Ξ−b→Λ0bπ−
(Physical Review Letters, 2015, Vol. 115, No. 24 (Desembre), 2015-12-11)Using a pp collision data sample corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb detector, we present the first search for the strangeness-changing weak decay Ξ−b→Λ0bπ−. ... -
La Conversión de Texto en Habla Multidominio: principios y portabilidad
(Libro de actas de las IV Jornadas en Tecnología del Habla, 2006-11-08)La conversión de texto en habla (CTH) multidominio per-sigue conseguir una calidad sintética cercana a la de lossistemas de CTH diseñados para un determinado ámbi-to o aplicación, aumentando su flexibilidad ... -
Observation of the suppressed ADS modes B± → [π± K∓ π+ π−] DK± and B± → [π± K∓ π+ π−] Dπ
(Physics Letters B, 2013, Vol. 723, No. 1-3 (Juny), 2013-06-10)An analysis of B±→DK±B±→DK± and B±→Dπ±B±→Dπ± decays is presented where the D meson is reconstructed in the four-body final state K±π∓π+π−K±π∓π+π−. Using LHCb data corresponding to an integrated luminosity ... -
LHCb Calorimeters: Technical Design Report
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LHCb Muon System: Technical Design Report
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Performance of Beamwidth Constrained Linear Array Synthesis Techniques Using Novel Evolutionary Computing Tools
(ACES Journal, 2018. Vol. 33, 3 (Març), 2018-03)Antenna array synthesis for desired radiation characteristics is a challenging field of research in electromagnetics. When an array synthesis problem is visualized as an optimization problem several ... -
Transition towards a digital architecture: new conceptions on materiality and nature
(Archidoct, 2015. Vol. 2, Nº2 (Febrer), 2015-02)Industrialized societies are undergoing a transition towards an informational era, in which modes of production and culture, once transformed by industrialization, are being modi½ed ... -
Using IEC 61850 GOOSE Service for Adaptive ANSI 67/67N Protection in Ring Main Systems with Distributed Energy Resources
(Energies, 2017. Vol. 10, 11, 2017-10)Smart Grids are electricity networks that use digital technology to co-ordinate the needs and capabilities of all generators, grid operators, end users and electricity market stakeholders in such away ... -
Differential Branching Fraction and Angular Analysis of the Decay B0 → K*0 μ+ μ−
(Physical Review Letters, 2012, Vol. 108, No. 18 (Maig), 2012-05-03)The angular distributions and the partial branching fraction of the decay B0→K*0μ+μ− are studied by using an integrated luminosity of 0.37 fb−1 of data collected with the LHCb detector. The forward-backward ... -
Measurement of b-hadron masses
(Physics Letters B , 2012, Vol. 708, No. 3 -5 (Febrer), 2012-02-28)Measurements of b-hadron masses are performed with the exclusive decay modes B+ -> J/psi K+, B0 -> J/psi K*0, B0 -> J/psi K0S, B0_s -> J/psi phi and Lambda_b -> J/psi Lambda using an integrated luminosity ... -
Measurement of the ¯B0s Meson Lifetime in D+sπ− Decays
(Physical Review Letters, 2014, Vol. 113, No. 17 (Octubre), 2014-10-24)We present a measurement of the ratio of the ¯B0s meson lifetime, in the flavor-specific decay to D+sπ−, to that of the ¯B0 meson. The pp collision data used correspond to an integrated luminosity of ... -
First Observation of a Baryonic B+c Decay
(Physical Review Letters, 2014, Vol. 113, No. 15 (Octubre), 2014-10-10)A baryonic decay of the B+c meson, B+c→J/ψp¯pπ+, is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding ... -
Determination of the Sign of the Decay Width Difference in the B0s System
(Physical Review Letters, 2012, Vol. 108, No. 24 (Juny), 2012-06-11)The interference between the K+K− S-wave and P-wave amplitudes in B0s→J/ψK+K− decays with the K+K− pairs in the region around the ϕ(1020) resonance is used to determine the variation of the difference ... -
Measurements of the Λ0b → J/ψ Λ decay amplitudes and the Λ0b polarisation in pp collisions at √s=7 TeV
(Physics Letters B , 2013, Vol. 724, No.1-3 (Juliol), 2013-07-09)An angular analysis of Lambda_b0 -> J/psi Lambda decays is performed using a data sample corresponding to 1.0 fb^{-1} collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector at the LHC. A ... -
Search for the rare decay D0 → μ+μ−
(Physics Letters B , 2013, Vol. 725, No.1-3 (Agost), 2013-08-09)A search for the rare decay D-0 -> mu(+) mu(-) is performed using a data sample, corresponding to an integrated luminosity of 0.9 fb(-1), of pp collisions collected at a centre-of-mass energy of 7 TeV ... -
Search for D+(s) → π+μ+μ− and D+(s) → π−μ+μ+ decays
(Physics Letters B, 2013, Vol. 724, No. 4-5 (Juliol), 2013-07-23)A search for non-resonant D+(s) to pi+mu+mu- and D+(s) to pi-mu+mu+ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb-1, at sqrt(s) = 7 TeV ... -
Advanced HF Communications for Remote Sensors in Antarctica
(Antarctica - A Key To Global Change, 2018-11)There is a strong research activity in Antarctica in the fields of geophysics, meteorology, wildlife, flora, oceanography, and environment, among others. This research activity often involves the ... -
Low Rate High Frequency Data Transmission from Very Remote Sensors
(Remote Sensing - Advanced Techniques and Platforms, 2012-06)This chapter deals with the difficulties of transmitting data gathered from sensors placedin very remote areas where energy supplies are scarce. The data link is established bymeans of the ionosphere, ... -
Fuzzy Logic Control for Multiresolutive Adaptive PN Acquisition Scheme in Time-Varying Multipath Ionospheric Channel
(Fuzzy Logic - Controls, Concepts, Theories and Applications, 2012-03)Communication with remote places is a challenge often solved using satellites. However, when trying to reach Antarctic stations, this solution suffers from poor visibility range and high operational ...