Visualitzant Recerca per autor/a "Camboni, Alessandro"

Ara mostrant els elements 101-120 de 209

    • 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 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 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 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 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 time-dependent CP asymmetry in B0 → J/ψ K0S decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B, Vol. 721, No. 1-3 (Abril 2013), 2013-04-10)
      This Letter reports a measurement of the CP violation observables S J/ψK0S and C J/ψK0S in the decay channel B0 → J/ψ K0S performed with 1.0 fb-1 of pp collisions at √s = 7 TeV collected by the LHCb ...

    • Measurement of the ¯B0s→D−sD+s and ¯B0s→D−D+s Effective Lifetimes 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review Letters, 2014, Vol. 112, No. 11 (Març), 2014-03-19)
      The first measurement of the effective lifetime of the ¯B0s meson in the decay ¯B0s→D−sD+s is reported using a proton-proton collision data set, corresponding to an integrated luminosity of 3  fb−1, ...

    • Measurement of the ηc(1S) production cross-section in p p collisions at s√=13 TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (The European Phisical Journal C, 2020, 191, 2020-03)
      Using a data sample corresponding to an integrated luminosity of 2.0 fb−1, collected by the LHCb experiment, the production of the ηc(1S) state in proton–proton collisions at a centre-of-mass energy of ...

    • 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. ...

    • 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 Ξ−b and Ω−b baryon lifetimes 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B , 2014, Vol. 736, (Setembre), 2014-09-07)
      Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb−1, the Ξ−b and Ω−b baryons are reconstructed in the Ξ−b→J/ψΞ− and Ω−b→J/ψΩ− decay modes and their lifetimes measured ...

    • Measurement of theB± production cross-section in pp collisions at √s= 7TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2012, Vol. 2012, No.4 (Abril), 2012-04-19)
      The production of B ± mesons in proton-proton collisions at s√ = 7 TeV is studied using 35 pb−1 of data collected by the LHCb detector. The B ± mesons are reconstructed exclusively in the B ± → J/ψK ± ...

    • Measurement of V 0 production ratios in pp collisions at ps = 0.9 and 7TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2011, Vol. 2011, No.8 (Agost), 2011-08-08)
      The Λ¯/Λ and Λ¯/K0S production ratios are measured by the LHCb detector from 0.3 nb−1 of pp collisions delivered by the LHC at s√=0.9 TeV and 1.8 nb−1 at s√=7 TeV. Both ratios are presented as a function ...

    • Measurement of |Vcb| with Bs → Ds(*) −μ +νμ decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2020, Vol. 101, n.7 (Abril), 2020-03)
      The element |Vcb| of the Cabibbo-Kobayashi-Maskawa matrix is measured using semileptonic B0s decays produced in proton-proton collision data collected with the LHCb detector at center-of-mass energies ...

    • Measurement of σ(pp → bb X) at √s = 7 TeV in the forward region 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B , 2010, Vol. 694, No. 3 (Novembre), 2010-11-08)
      Decays of b hadrons into final states containing a D0 meson and a muon are used to measure the bb production cross-section in proton–proton collisions at a centre-of-mass energy of 7 TeV at the LHC. In ...

    • Measurement of ψ(2S) meson production 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, 2012, Vol. 72, No. 2100, 2012-08)
      The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at √s = 7 TeV has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity ...

    • Measurement of ψ(2S) polarisation in pp collisions at s√ = 7 TeV 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (The European Physical Journal C, 2014, Vol. 74, no. 5 (Maig), 2014-05-20)
      The polarisation of prompt ψ(2S) mesons is measured by performing an angular analysis of ψ(2S)→μ+μ− decays using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb −1, ...