Visualitzant La Salle per autor/a "Vilasís Cardona, Xavier"

Ara mostrant els elements 81-100 de 320

    • 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)

    • 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 ...

    • Low noise front end ICECAL ASIC for the upgrade of the LHCb calorimeter 

      Abellan Beteta, Carlos; Vilasís Cardona, Xavier (Journal of Instrumentation, 2012, Vol. 7, No.1 (Gener), 2012-01-23)
      A fully differential ASIC with cooled input termination is presented as a solution for the Upgrade of the Calorimeter front end electronics. The LHCb experiment needs to increase about ten times the ...

    • Measurement of Ξ++cc production in pp collisions at √s= 13TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Chinese Physics C, 2020, Vol. 44, no 2, 2020-02)
      The production of $\varXi _{cc}^ {++}$ baryons in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=13\;{\rm{TeV}}$ is measured in the transverse-momentum range $4 \lt p_{\rm{T}} \lt ...

    • 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 ...

    • 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 ...

    • Measurement of b-hadron branching fractions fortwo-body decays into charmless charged hadrons 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2012, Vol. 2012, No.10 (Octubre), 2012-10-04)
      Based on data corresponding to an integrated luminosity of 0.37 fb−1 collected by the LHCb experiment in 2011, the following ratios of branching fractions are measured: $ B(B0→π+π−)/B(B0→K+π−)=0.262±0 ...

    • Measurement of b-hadron masses 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (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 charged particle multiplicities and densities in pp collisions at s√=7TeV in the forward region 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (The European Physical Journal C, 2014. Vol. 74, No. 5 (Maig), 2014-05-24)
      Charged particle multiplicities are studied in proton–proton collisions in the forward region at a centre-of-mass energy of s√=7TeV with data collected by the LHCb detector. The forward spectrometer ...

    • Measurement of CP asymmetries and polarisation fractions in B0s→K∗0K¯¯¯¯¯∗0 decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2015, Vol. 2015, No.7 (Juliol), 2015-07-30)
      An angular analysis of the decay B0s→K∗0K¯¯¯¯¯∗0 is performed using pp collisions corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment at a centre-of-mass energy s√=7 ...

    • Measurement of CP asymmetries in the decays B 0 → K *0 μ + μ − and B + → K + μ + μ − 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2014, Vol. 2014, No.9 (Setembre), 2014-09-30)
      The direct CP asymmetries of the decays B 0 → K *0 μ + μ − and B + → K + μ + μ − are measured using pp collision data corresponding to an integrated luminosity of 3.0 fb−1 collected with the LHCb detector. ...

    • Measurement of CP asymmetry in B 0 s  → D ∓ s K ± decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2014, Vol. 2014, No.11 (Novembre), 2014-11-13)
      We report on measurements of the time-dependent CP violating observables in B 0 s  → D ∓ s K ± decays using a dataset corresponding to 1.0 fb−1 of pp collisions recorded with the LHCb detector. We find ...

    • Measurement of CP asymmetry in D0 → K−K+ and D0 → π −π + decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2014, No. 41, 2014-07)
      Time-integrated CP asymmetries in D0 decays to the final states K−K+ and π −π + are measured using proton-proton collisions corresponding to 3 fb−1 of integrated luminosity collected at centre-of-mass ...

    • Measurement of CP observables in B 0 → DK ∗0 with D →K + K − 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.3 (Març), 2013-03-12)
      The decay B 0 → DK *0 and the charge conjugate mode are studied using 1.0 fb−1 of pp collision data collected by the LHCb experiment at s√=7 TeV in 2011. The CP asymmetry between the B 0 → DK *0 and the ...

    • Measurement of CP observables in B± → DK± and B± → Dπ± with D → K0SK±π∓ decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Golobardes, Elisabet; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2020, 58, 2020-05)
      Measurements of CP observables in B± → DK± and B± → Dπ± decays are presented, where D represents a superposition of D0 and D¯¯¯¯0 states. The D meson is reconstructed in the three-body final states ...

    • Measurement of CP violation and constraints on the CKM angle γ in B±→DK±with D→K0S π+π− decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Nuclear Physics B, 2014, Vol. 888, 2014-11)
      A model-dependent amplitude analysis of B± → DK± with D → KS0π+π− decays is performed using proton–proton collision data, corresponding to an integrated luminosity of 1fb−1, recorded by LHCb at a ...

    • Measurement of CP violation and the B0s meson decay width difference with B0s→J/ψK+K− and B0s→J/ψπ+π− decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2013, Vol. 87 , No.11 (Juny), 2013-06-21)
      The time-dependent CP asymmetry in B0s→J/ψK+K− decays is measured using pp collision data at √s=7  TeV, corresponding to an integrated luminosity of 1.0  fb−1, collected with the LHCb detector. The ...

    • Measurement of CP violation in B0s → ϕϕ decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2014, Vol. 90 , No.5 (Setembre), 2014-09-30)
      A measurement of the decay time-dependent CP-violating asymmetry in B0s→ϕϕ decays is presented, along with measurements of the T-odd triple-product asymmetries. In this decay channel, the CP-violating ...

    • Measurement of CP violation in B0→ D∗±D∓ decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2020, 147, 2020-02)
      The decay-time-dependent CP asymmetry in B0→ D∗±D∓ decays is mea- sured using a data set corresponding to an integrated luminosity of 9 fb−1 recorded by the LHCb detector in proton-proton collisions at ...

    • 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 ...