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    • LHCb Trigger and Online Upgrade Technical Design Report 

      Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2014-03-21)
      The LHCb experiment will be upgraded between 2018 and 2019 in order to reach unprecedented precision on the main observable of the b and c-quark sectors. This Technical Design Report addresses the ...

    • LHCb VELO (VErtex LOcator): Technical Design Report 

      Ballabriga Suñé, Rafel; Luengo Álvarez, Sonia; Roselló Canal, Mar; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2001-05-31)

    • LHCb PID Upgrade Technical Design Report 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2018-11-25)
      The LHCb upgrade will take place in the second long shutdown of the LHC, currently scheduled to begin in 2018. The upgrade will enable the experiment to run at luminosities of 2 x10*33cm -2s-1 and will ...

    • Automated Audio Data Monitoring for a Social Robot in Ambient Assisted Living Environments 

      Alsina Pagès, Rosa Maria; Navarro Martín, Joan; Casals Oliveras, Enric (New Friends 2016: The 2nd International Conference on Social Robots in Therapy & Education, 2016-11-04)
      Human life expectancy has steadily grown over the last century, which has driven governments and institutions to increase the efforts on caring about the eldest segment of the population. Although this ...

    • New Framework and Mechanisms of Context‐Aware Service Composition in the Future Internet 

      González, Alberto J.; Martín de Pozuelo, Ramon; Germán, Martín; Alcober, Jesús; Pinyol, Francesc (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 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 ...

    • Precision Measurement of the Mass and Lifetime of the Ξ0b Baryon 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters, 2014, Vol. 113, No. 3 (Juliol), 2014-07-15)
      Using a proton-proton collision data sample corresponding to an integrated luminosity of 3  fb−1 collected by LHCb at center-of-mass energies of 7 and 8 TeV, about 3800 Ξ0b→Ξ+cπ−, Ξ+c→pK−π+ signal decays ...

    • Observation of Photon Polarization in the b→sγ Transition 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters, 2014, Vol. 112, No. 16 (Abril), 2014-04-22)
      This Letter presents a study of the flavor-changing neutral current radiative B±→K±π∓π±γ decays performed using data collected in proton-proton collisions with the LHCb detector at 7 and 8 TeV center-of-mass ...

    • Measurement of CP Violation in B0→J/ψK0S Decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters, 2015, Vol. 115, No. 3 (Juliol), 2015-07-14)
      Measurements are presented of the CP violation observables S and C in the decays of B0 and ¯B0 mesons to the J/ψK0S final state. The data sample corresponds to an integrated luminosity of 3.0  fb−1 ...