Visualitzant per autor/a "LHCb Collaboration - CERN"

Ara mostrant els elements 1-20 de 323

    • A BiCMOS discriminator interface for the SPD 

      Diéguez, A.; Bota, S.; Gascón, D.; Garrido, L.; Roselló Canal, Mar; LHCb Collaboration - CERN (2000-09)
      A prototype chip for the analogue readout of the SPD in the LHCb Calorimeter is presented. The chip has been designed using the 0.8mm-BiCMOS technology of AMS and optimised for minimum size and ...

    • A model-independent Dalitz plot analysis of B±→DK± with D→K0Sh+h− (h=π,K) decays and constraints on the CKM angle γ 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B , 2015, Vol. 718, No. 1 (Novembre), 2012-11-15)
      A binned Dalitz plot analysis of B± → DK± decays, with D → K0 Sπ+π− and D → K0 S K+K−, is performed to measure the CP-violating observables x± and y± which are sensitive to the CKM angle γ . The analysis ...

    • A study of CP violation in B±→DK± and B±→Dπ± decays with D→K0SK±π∓ final states 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physics Letters B , 2014, Vol. 733 (Juny), 2014-06-02)
      A first study of CP violation in the decay modes B±→[K0SK±π∓]Dh± and B±→[K0SK∓π±]Dh±, where h labels a K or π meson and D labels a D0 or D⎯⎯⎯0 meson, is performed. The analysis uses the LHCb data set ...

    • A study of the Z production cross-section in pp collisions at s√=7TeV using tau final states 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2013, Vol. 2013, No.1 (Gener), 2013-01-16)
      A measurement of the inclusive Z → ττ cross-section in pp collisions at s√=7TeV is presented based on a dataset of 1.0 fb−1 collected by the LHCb detector. Candidates for Z → τ τ decays are identified ...

    • Addendum: Observation of double charm production involving open charm in pp collisions at√s= 7 TeV 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2041, Vol. 2014, No.3 (Març), 2014-03-24)

    • Amplitude analysis and branching fraction measurement of ¯Bos → J/ψ K+K− 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2013, Vol. 87 , No.7 (Abril), 2013-04-08)
      An amplitude analysis of the final state structure in the ¯¯¯B0s→J/ψK+K− decay mode is performed using 1.0  fb−1 of data collected by the LHCb experiment in 7 TeV center-of-mass energy pp collisions ...

    • Amplitude analysis of B0 → ¯D0K+π− decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2015, Vol.92, No.1 (Juliol), 2015-07-20)
      The Dalitz plot distribution of B0→¯D0K+π− decays is studied using a data sample corresponding to 3.0  fb−1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. The data are described ...

    • Amplitude analysis of the B+ → π+ π+ π− decay 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2020-01)
      The results of an amplitude analysis of the charmless three-body decay B+→π+π+π−, in which CP-violation effects are taken into account, are reported. The analysis is based on a data sample corresponding ...

    • Analysis of the resonant components in ¯B0s → J/ψ π+ π− 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2012, Vol. 86 , No.5 (Setembre), 2012-09-17)
      The decay ¯¯¯B0s→J/ψπ+π− can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state ...

    • Analysis of the resonant components in ¯¯¯B0s→J/ψπ+π− 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2012, Vol. 86 , No. 5 (Setembre), 2012-09-17)
      The decay ¯¯¯B0s→J/ψπ+π− can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state ...

    • Angular analysis and differential branching fraction of the decay B 0 s  → ϕμ + μ − 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2015, Vol. 2015, No.9 (Setembre), 2015-09-25)
      An angular analysis and a measurement of the differential branching fraction of the decay B 0 s  → ϕμ + μ − are presented, using data corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions ...

    • Angular analysis of charged and neutral B → Kμ + μ − decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; LHCb Collaboration - CERN (Journal of High Energy Physics, 2014, Vol. 2014, No.5 (Maig), 2014-05-19)
      The angular distributions of the rare decays B + → K + μ + μ − and B0→K0Sμ+μ− are studied with data corresponding to 3fb−1 of integrated luminosity, collected in proton-proton collisions at 7 and 8 TeV ...

    • Angular analysis of the B0 → K*0e+e− decay in the low-q2 region 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2015, Vol. 2015, No.4 (Abril), 2015-04-14)
      An angular analysis of the B0 → K*0e+e− decay is performed using a data sample, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment in pp collisions at centre-of-mass ...

    • B flavour tagging using charm decays at the LHCb experiment 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of Instrumentation, 2015, Vol. 10, 2015-10)
      An algorithm is described for tagging the flavour content at production of neutral B mesons in the LHCb experiment. The algorithm exploits the correlation of the flavour of a B meson with the charge of ...

    • Dalitz plot analysis of B0 → D¯ 0πþπ− decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2015, Vol. 92, No. 3, 2015-08)
      The resonant substructures of B0 → D¯ 0πþπ− decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions collected ...

    • Dalitz plot analysis of B0s→¯D0K−π+ decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2014, Vol. 90 , No.7 (Octubre), 2014-10-14)
      The resonant substructure of B0s→¯D0K−π+ decays is studied with the Dalitz plot analysis technique. The study is based on a data sample corresponding to an integrated luminosity of 3.0  fb−1 of pp ...

    • 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. ...

    • Determination of quantum numbers for several excited charmed mesons observed in B−→D*+π−π− decays 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Physical Review D, 2020, Vol. 101, n.3 (Febrer), 2020-01)
      A four-body amplitude analysis of the B−→D*+π−π− decay is performed, where fractions and relative phases of the various resonances contributing to the decay are measured. Several quasi-model-independent ...

    • Determination of the branching fractions of B 0S  → D ∓S K ∓ and B 0 → D −S K + 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Journal of High Energy Physics, 2015, Vol. 2015, No.19 (Abril), 2015-04-07)

    • Determination of the quark coupling strength |Vub| using baryonic decays 

      Badalov, Alexey; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Nature Physics, 2015, Vol. 11, 2015-07)
      In the Standard Model of particle physics, the strength of the couplings of the b quark to the u and c quarks, |Vub| and |Vcb|, are governed by the coupling of the quarks to the Higgs boson. Using data ...