La Salle: Recent submissions

Now showing items 341-360 of 780

    • Observation of Two New Ξ−b Baryon Resonances 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters , 2015, Vol. 114, No. 6 (Febrer), 2015-02-10)
      Two structures are observed close to the kinematic threshold in the Ξ0bπ− mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0  fb−1, recorded by ...

    • Measurement of b hadron production fractions in 7 TeV pp collisions 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physiccal Review D , 2012, Vol. 85, No.3 (Febrer), 2012-02-24)
      Measurements of b hadron production ratios in proton-proton collisions at a center-of-mass energy of 7 TeV with an integrated luminosity of 3  pb−1 are presented. We study the ratios of strange B meson ...

    • Effective lifetime measurements in the B0s → K+K− , B0 → K+π− and B0s → π+K− decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B , 2014, Vol. 736 (Setembre), 2014-09-07)
      Measurements of the effective lifetimes in the B0s→K+K−, B0→K+π− and B0s→π+K− decays are presented using 1.0 fb−1 of pp collision data collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. ...

    • Measurement of the B 0 → K ∗0 e + e − branching fraction at low dilepton mass 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.5 (Maig), 2013-05-29)
      The branching fraction of the rare decay B 0 → K ∗0 e + e − in the dilepton mass region from 30 to 1000 MeV/c 2 has been measured by the LHCb experiment, using pp collision data, corresponding to an ...

    • First observation of the decay B0s→ϕK¯¯¯¯¯∗0 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.10 (Octubre), 2013-10-28)
      The first observation of the decay B0s→ϕK¯¯¯¯¯∗0 is reported. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions at s√=7 TeV, collected with ...

    • Observation of associated production of a Z boson with a D meson in the forward region 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2014, Vol. 2014, No.4 (Abril), 2014-04-14)
      A search for associated production of a Z boson with an open charm meson is presented using a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of proton-proton collisions at a ...

    • Measurement of the Λ0b → J/ψΛ angular distribution angular distribution and the Λ0b polarisation in pp collisions 

      Calvo Gómez, Míriam; Camboni, Alessandro; Golobardes, Elisabet; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2020, 110, 2020-06-17)
      This paper presents an analysis of the Λ0b→ J/ψΛ angular distribution and the transverse production polarisation of Λ0b baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. ...

    • Observation of a new baryon state in the Λ0bπ+π− mass spectrum 

      Calvo Gómez, Míriam; Camboni, Alessandro; Golobardes, Elisabet; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2020, 136, 2020-06)
      A new baryon state is observed in the Λ0bπ+π− mass spectrum with high significance using a data sample of pp collisions, collected with the LHCb detector at centre-of-mass energies s√ = 7, 8 and 13 TeV, ...

    • Sensing System for Remote Areas in Antarctica 

      Porté Jiménez, Joaquim; Masó Llinàs, Josep M.; Pijoan Vidal, Joan Lluís; Badia Folguera, David (Radio Science, 2020, Vol.55 No 3, 2020-02)
      Every year, the number of Internet of Things devices is growing exponentially. The current Internet of Things technology to support the connectivity of such a huge number of devices is limited by the ...

    • A Heuristic to Create Prosumer Community Groups in the Social Internet of Energy 

      Caballero Codina, Víctor; Vernet Bellet, David; Zaballos Diego, Agustín (Sensors, 2020, Vol. 20 No 13, 2020-07)
      Contrary to the rapid evolution experienced in the last decade of Information andCommunication Technologies and particularly the Internet of Things, electric power distributionsystems have ...

    • An Educational Approach for Present and Future of Digital Transformation in Portuguese Organizations 

      Santos Pereira, Carla; Durao, Natércia; Fonseca Escudero, David; Ferreira, Maria Joao; Moreira, Fernando (Applied Sciences, 2020, 10(3), 757;, 2020-01)
      The current technological evolution allows us to easily and quickly obtain more information, computing capacity, ommunication and connectivity, in addition to allowing new forms of collaboration between ...

    • Model-independent search for CP violation in D0→K-K+π-π+ and D0→π-π+π+π- decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B , 2013, Vol. 726, No.4-5 (Novembre), 2013-11-04)
      A search for CP violation in the phase-space structures of D0 and D0bar decays to the final states K-K+pi-pi+ and pi-pi+pi+pi- is presented. The search is carried out with a data set corresponding to ...

    • Measurement of the χ b (3P) mass and of the relative rate of χ b1(1P) and χ b2(1P) production 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2014, Vol. 2014, No.10 (Octubre), 2014-10-14)
      The production of χ b mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of s√ =7 and 8 TeV and corresponding to an integrated ...

    • Measurement of J/Ψ production in pp collisions at s√=7 TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (The European Physical Journal C, 2011. Vol. 71, No. 5 (Maig), 2011-05-19)
      The production of J/ψ mesons in proton–proton collisions at s√=7\ensuremath TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/ψ production is measured as a ...

    • Observation of the Λ 0 b → J/ψ pπ − decay 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2014, Vol. 2014, No.7 (Juliol), 2014-07-22)
      The first observation of the Cabibbo-suppressed decay Λ 0 b → J/ψpπ − is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. A ...

    • Measurement of the fraction of Υ (1S) originating from χb (1P) decays in pp collisions at√s= 7 TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2012, Vol. 2012, No. 11 (Novembre), 2012-11-08)
      The production of χb(1P ) mesons in pp collisions at a centre-of-mass energy of 7 TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P ) mesons are reconstructed in the decay ...

    • Limits on neutral Higgs boson production in the forward region in pp collisions at s√=7 TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.5 (Maig), 2013-05-27)
      Limits on the cross-section times branching fraction for neutral Higgs bosons, produced in pp collisions at s√=7 TeV, and decaying to two tau leptons with pseudorapidities between 2.0 and 4.5, are ...

    • Measurement of the cross-section for Z → e+e- production in pp collisions at s√=7 TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.2 (Febrer), 2013-02-19)
      A measurement of the cross-section for pp → Z → e+e− is presented using data at s√=7 TeV corresponding to an integrated luminosity of 0.94 fb−1. The process is measured within the kinematic acceptance ...

    • Differential branching fraction and angular analysis of the decay B0s → ϕμ + μ − 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.7 (Juliol), 2013-07-11)
      The determination of the differential branching fraction and the first angular analysis of the decay B0s → ϕμ + μ − are presented using data, corresponding to an integrated luminosity of 1.0 fb−1, ...

    • Time alignment of the front end electronics of the LHCb calorimeters 

      Abellan Beteta, Carlos; Calvo Gómez, Míriam; Camboni, Alessandro; Roselló Canal, Mar; Vilasís Cardona, Xavier (Journal of Instrumentation, 2012, Vol. 7, No.8 (Agost), 2012-08-21)
      LHCb is the experiment at the Large Hadron Collider at CERN designed for performing studies of CP-symmetry violation and rare decays of B-hadrons. Its calorimeter system allows to trigger on photons and ...