Browsing Contribucions a congressos by Subject "Col·lisions (Física nuclear)"

Now showing items 1-7 of 7

    • 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 ...

    • Flavour Tagging at LHCb 

      Calvo Gómez, Míriam; LHCb Collaboration - CERN (2012-06)
      The identification of the flavour of reconstructed Bd and Bs mesons at production is necessary for the measurements of oscillations and time-dependent CP asymmetries. The calibration and performance of ...

    • Measurement of the ratio of branching fractions B(Bd→K∗0γ)/B(Bs→ϕγ) with the LHCb experiment at s√=7~TeV 

      LHCb Collaboration - CERN (2011-08)
      The ratio of branching ratios of the radiative B decays Bd→K∗0γ and Bs→ϕγ has been measured using 340.1~pb−1 of \emph{pp} collisions at a centre of mass energy of s√=7~TeV taken with the LHCb detector. ...

    • Tagged time-dependent angular analysis of B0s→J/ψϕ decays with the 2010 LHCb data 

      LHCb Collaboration - CERN (2011-04)
      The interference between B0s decays to Jψϕ either directly or via B0s−B¯0s oscillation gives rise to a CP violating phase ϕJ/ψϕs. In the Standard Model, this phase is approximately -2βs, where βs = arg ...

    • Tagged time-dependent angular analysis of Bs→J/ψϕ decays with 337~pb−1 at LHCb 

      LHCb Collaboration - CERN (2011-08)
      The interference between Bs decays to J/ψϕ either directly or via Bs−B¯¯¯¯s oscillation gives rise to a CP violating phase ϕJψϕs. Using a sample of 8276±94 Bs→J/ψϕ events extracted from 337~pb−1 of pp ...

    • The Front End Electronics of the Scintillator Pad Detector of the LHCb Calorimeter 

      Abellan Beteta, Carlos; Bota, S.; Comerma, A.; Dieguez, A.; Garrido, L.; Gascon, D.; Gaspar de Valenzuela, Álvaro; Graciani, R.; Grauges, E.; Herms, A.; Llorens, M.; Luengo Alvarez, Sonia; Picatoste, E.; Riera, J.; Roselló Canal, Mar; Ruiz, H.; Tortella, S.; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (Proceedings of the Twelfth Workshop on Electronics for LHC and Future Experiments, 2006-09)
      In this paper the Front End electronics of the Scintillator Pad Detector (SPD) is outlined. The SPD is a sub-system of the Calorimeter of the LHCb experiment designed to discriminate between charged and ...

    • Time Alignment and Calibration of the LHCb Calorimeter 

      Calvo Gómez, Míriam; LHCb Collaboration - CERN (2010)