Visualitzant Recerca per autor/a "CERN"

Ara mostrant els elements 76-95 de 324

    • LHCb online system, data acquisition and experiment control: Technical Design Report 

      Ballabriga Suñé, Rafel; Luengo Álvarez, Sonia; Roselló Canal, Mar; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2001-12-19)

    • LHCb outer tracker: Technical Design Report 

      Ballabriga Suñé, Rafel; Luengo Álvarez, Sonia; Roselló Canal, Mar; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2001-09-14)

    • LHCb PID Upgrade Technical Design Report 

      Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2018-11-25)
      The LHCb upgrade will take place in the second long shutdown of the LHC, currently scheduled to begin in 2018. The upgrade will enable the experiment to run at luminosities of 2 x10*33cm -2s-1 and will ...

    • LHCb reoptimized detector design and performance: Technical Design Report 

      Ballabriga Suñé, Rafel; Luengo Álvarez, Sonia; Roselló Canal, Mar; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2003-09-09)
      The LHCb experiment has been conceived to study CP violation and other rare phenomena in B meson decays with very high precision. This should provide a profound understanding of quark flavour physics ...

    • LHCb RICH: Technical Design Report 

      Roselló Canal, Mar; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2000-09-06)
      This Technical Design Report is dedicated to Tom Ypsilantis. Tom conceived the Ring Imaging Cherenkov detectors for particle identification in LHCb and he made an inestimable contribution to the LHCb ...

    • LHCb Trigger and Online Upgrade Technical Design Report 

      Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN (2014-03-21)
      The LHCb experiment will be upgraded between 2018 and 2019 in order to reach unprecedented precision on the main observable of the b and c-quark sectors. This Technical Design Report addresses the ...

    • 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 ...

    • 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 ...