Listando Articles publicats en revistes por título

Mostrando ítems 274-293 de 538

    • Measurement of the forward energy flow in pp collisions at √s = 7 TeV 

      Abellan Beteta, Carlos; Calvo Gómez, Míriam; Camboni, Alessandro; Domingo Bonal, Francesc; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (The European Physical Journal C, 2013, Vol. 73, No. 2421, 2013-05)
      The energy flow created in pp collisions at √s = 7 TeV is studied within the pseudorapidity range 1.9 <η< 4.9 with data collected by the LHCb experiment. The measurements are performed for inclusive ...

    • Measurement of the forward Z boson production cross-section in pp collisions at s√=7 TeV 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2015, Vol. 2015, No.8 (Agost), 2015-08-10)
      A measurement of the production cross-section for Z bosons that decay to muons is presented. The data were recorded by the LHCb detector during pp collisions at a centre-of-mass energy of 7 TeV, and ...

    • Measurement of the forward-backward asymmetry in Z/γ∗ → μ + μ − decays and determination of the effective weak mixing angle 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2015, Vol. 2015, No.11 (Noviembre), 2015-11-27)
      The forward-backward charge asymmetry for the process qq¯¯→Z/γ∗→μ+μ− is measured as a function of the invariant mass of the dimuon system. Measurements are performed using proton proton collision data ...

    • 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 ...

    • Measurement of the fragmentation fraction ratio f s /f d and its dependence on B meson kinematics 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.4 (Abril), 2013-04-02)
      The relative production rate of B0s and B 0 mesons is determined with the hadronic decays B0s→D−sπ+ and B 0 → D − K +. The measurement uses data corresponding to 1.0 fb−1 of pp collisions at a centre-of-mass ...

    • Measurement of the inclusive phi cross-section in pp collisions at sqrt(s) = 7 TeV. 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B, Vol. 703, No. 3 (Setembre 2011), 2011-07)
      The cross-section for inclusive Φ meson production in pp collisions at a centre-of-mass energy of s=7 TeV has been measured with the LHCb detector at the Large Hadron Collider. The differential cross-section ...

    • Measurement of the inelastic pp cross-section at a centre-of-mass energy of s√ = 7 TeV 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2015, Vol. 2015, No.2 (Febrer), 2015-02-19)
      The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum p T > 0.2GeV/c in the pseudorapidity range 2.0 < η < 4.5, is measured ...

    • Measurement of the isospin asymmetry inB→K(∗)μ+μ−decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2012, Vol. 2012, No.7 (Juliol), 2012-07-20)
      The isospin asymmetries of B → K (∗) μ + μ − decays and the partial branching fractions of B 0 → K 0 μ + μ − and B + → K ∗+ μ + μ − are measured as a function of the di-muon mass squared q 2 using an ...

    • Measurement of the lifetime of the Bc+ meson using the Bc+→ J/ψπ+ decay mode 

      Calvo Gómez, Míriam; LHCb Collaboration - CERN (Physics Letters B , 2015, Vol. 742, (Març), 2015-03-06)
      The difference in total widths between the Bc+ and B+mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb-1collected by the LHCb experiment in 7 and 8 TeV centre-of-mass ...

    • Measurement of the polarization amplitudes and triple product asymmetries in the B s 0 → ϕ ϕ decay 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B, 2012, Vo. 713, No. 4-5 (Juliol 2012), 2012-07-18)
      Using 1.0 fb^{-1} of pp collision data collected at a centre-of-mass energy of sqrt{s}=7 TeV with the LHCb detector, measurements of the polarization amplitudes, strong phase difference and triple product ...

    • Measurement of the polarization amplitudes in B0→J/ψK∗(892)0 decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2013, Vol. 88 , No.5 (Setembre), 2013-09-03)
      An analysis of the decay B0→J/ψK∗(892)0 is presented using data, corresponding to an integrated luminosity of 1.0  fb−1, collected in pp collisions at a center-of-mass energy of 7 TeV with the LHCb ...

    • Measurement of the ratio of B+c branching fractions to J/ψπ+ and J/ψμ+νμ final states 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2014, Vol. 90 , No.3 (Agost), 2014-08-27)
      The first measurement that relates semileptonic and hadronic decay rates of the B+c meson is performed using proton-proton collision data corresponding to 1.0  fb−1 of integrated luminosity collected ...

    • Measurement of the ratio of branching fractions B(B0 → K∗0γ )/B(B0 s → φγ ) and the direct CP asymmetry in B0 → K∗0γ 

      Abellan Beteta, Carlos; Calvo Gómez, Míriam; Domingo Bonal, Francesc; Roselló Canal, Mar; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Nuclear Physics B, 2012, Vol. 867, 2012-09)
      The ratio of branching fractions of the radiative B decays B0→K∗0γ andB0s→φγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a ...

    • Measurement of the ratio of branching fractions B(B0→K*0γ)/B(B0s→ϕγ) 

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

    • Measurement of the Ratio of Branching Fractions B(¯B0→D*+τ−¯ντ)/B(¯B0→D*+μ−¯νμ) 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters, 2015, Vol. 115, No. 11 (Setembre), 2015-09-09)
      The branching fraction ratio R(D∗)≡B(¯B0→D*+τ−¯ντ)/B(¯B0→D*+μ−¯νμ) is measured using a sample of proton-proton collision data corresponding to 3.0  fb−1 of integrated luminosity recorded by the LHCb ...

    • Measurement of the ratio of prompt χc to J/ψ production in pp collisions at √s=7TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B , 2012, Vol. 718, No. 2 (Desembre), 2012-12-05)
      The prompt production of charmoniumχcandJ/ψstates is studied in proton–proton collisionsat a centre-of-mass energy of√s=7 TeV at the Large Hadron Collider. TheχcandJ/ψmesonsare identified through their ...

    • Measurement of the relative rate of prompt χ c0, χ c1 and χ c2 production at s√=7 TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.10 (Octubre), 2013-10-18)
      Prompt production of charmonium χ c0, χ c1 and χ c2 mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of s√=7 TeV. The χ c mesons are identified through their decay ...

    • Measurement of the resonant and CP components in ¯B0 → J/ψπ+π− decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2014, Vol. 90 , No.1 (Juliol), 2014-07-10)
      The resonant structure of the reaction ¯B0→J/ψπ+π− is studied using data from 3  fb−1 of integrated luminosity collected by the LHCb experiment, one third at 7 TeV center-of-mass energy and the remainder ...

    • Measurement of the Semileptonic C P Asymmetry in B0 - ̄B0 Mixing 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters , 2015, Vol. 114, No. 4 (Gener), 2015-01-28)
      The semileptonic CP asymmetry in B0-¯B0 mixing, adsl, is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0  fb−1, recorded by the LHCb experiment. Semileptonic ...

    • Measurement of the time-dependent CP asymmetries in B 0s  → J/ψK 0S 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2015, Vol. 2015, No.6 (Juny), 2015-06-18)