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CERN Document Server 190 records found  1 - 10próximoend  jump to record: Search took 0.74 seconds. 
1.
Performance of LHCb Silicon Tracker Detector in the LHC / Luisier, Johan (LPHE, Lausanne) /LHCb Silicon Tracker Group
The LHCb experiment is designed to perform high-precision measurements of CP violation and search for New Physics using the enormous flux of beauty and charmed hadrons produced at the LHC. The LHCb detector is a single-arm spectrometer with excellent tracking and particle identification capabilities. [...]
2012 - 8 p. - Published in : Phys. Procedia 37 (2012) 851-858 Elsevier Open Access article: PDF;
In : 2nd International Conference on Technology and Instrumentation in Particle Physics, Chicago, IL, USA, 9 - 14 Jun 2011, pp.851-858
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2.
Measurement of $\psi(2S)$ polarisation in $pp$ collisions at $\sqrt{s}=7$ TeV / LHCb collaboration
The polarisation of prompt $\psi(2S)$ mesons is measured by performing an angular analysis of $\psi(2S)\rightarrow \mu^{+} \mu^{-}$ decays using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, collected by the LHCb detector at a centre-of-mass energy of 7 TeV. The polarisation is measured in bins of transverse momentum $p_\mathrm{T}$ and rapidity $y$ in the kinematic region $3.5<p_\mathrm{T}<15$ GeV$/c$ and $2.0<y<4.5$, and is compared to theoretical models. [...]
arXiv:1403.1339; LHCB-PAPER-2013-067; CERN-PH-EP-2014-029; CERN-PH-EP-2014-029; LHCB-PAPER-2013-067.- Geneva : CERN, 2014-05-20 - 22 p. - Published in : Eur. Phys. J. C 74 (2014) 2872 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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3.
Measurement of resonant and $CP$ components in $\overline{B}_s^0\to J/\psi\pi^+\pi^-$ decays / LHCb Collaboration
The resonant structure of the decay $\overline{B}_s^0\to J/\psi\pi^+\pi^-$ is studied using data corresponding to 3 fb$^{-1}$ of integrated luminosity from $pp$ collisions by the LHC and collected by the LHCb detector. Five interfering $\pi^+\pi^-$ states are required to describe the decay: $f_0(980),~f_0(1500),~f_0(1790),~f_2(1270)$, and $f_2^{\prime}(1525)$. [...]
arXiv:1402.6248; LHCB-PAPER-2013-069; CERN-PH-EP-2014-024; LHCB-PAPER-2013-069; CERN-PH-EP-2014-024.- Geneva : CERN, 2014-05-14 - 21 p. - Published in : Phys. Rev. D 89 (2014) 092006 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
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4.
Measurement of charged particle multiplicities and densities in $pp$ collisions at $\sqrt{s}$ = 7 TeV in the forward region / LHCb collaboration
Charged particle multiplicities are studied in proton-proton collisions in the forward region at a centre-of-mass energy of $\sqrt{s} = 7\;$TeV with data collected in 2010 by the LHCb detector. The forward spectrometer allows access to a kinematic range of $2.0<\eta<4.8$ in pseudorapidity, momenta down to $2\;$GeV/$c$ and transverse momenta down to $0.2\;$GeV/$c$. [...]
arXiv:1402.4430; CERN-PH-EP-2014-023; LHCB-PAPER-2013-070; CERN-PH-EP-2014-023; LHCB-PAPER-2013-070.- Geneva : CERN, 2014-05-24 - 23 p. - Published in : Eur. Phys. J. C (2014) 74:2888 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Rivet analyses reference
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5.
A study of CP violation in $B^\pm \to D K^\pm$ and $B^\pm \to D \pi^\pm$ decays with $D \to K^0_{\rm S} K^\pm \pi^\mp$ final states / LHCb Collaboration
A first study of CP violation in the decay modes $B^\pm\to [K^0_{\rm S} K^\pm \pi^\mp]_D h^\pm$ and $B^\pm\to [K^0_{\rm S} K^\mp \pi^\pm]_D h^\pm$, where $h$ labels a $K$ or $\pi$ meson and $D$ labels a $D^0$ or $\overline{D}^0$ meson, is performed. The analysis uses the LHCb data set collected in $pp$ collisions, corresponding to an integrated luminosity of 3 fb$^{-1}$. [...]
arXiv:1402.2982; CERN-PH-EP-2014-017; LHCB-PAPER-2013-068; CERN-PH-EP-2014-017; LHCB-PAPER-2013-068.- Geneva : CERN, 2014-06-02 - 10 p. - Published in : Phys. Lett. B 733 (2014) 36-45 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: S037026931400207X - XML; arXiv:1402.2982 - PDF; Related data file(s): ZIP; External link: Preprint
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6.
Measurements of the $B^+$, $B^0$, $B_s^0$ meson and $\Lambda_b^0$ baryon lifetimes / LHCb collaboration
Measurements of $b$-hadron lifetimes are reported using $pp$ collision data, corresponding to an integrated luminosity of 1.0fb$^{-1}$, collected by the LHCb detector at a centre-of-mass energy of $7$Tev. Using the exclusive decays $B^+\to J/\psi K^+$, $B^0\to J/\psi K^*(892)^0$, $B^0\to J/\psi K^0_{\rm S}$, $\Lambda_b^0\to J/\psi \Lambda$ and $B^0_s\to J/\psi \phi$ the average decay times in these modes are measured to be $\tau_{B^+\to J/\psi K^+}$ = $1.637 \pm$ 0.004 $\pm$ 0.003 ps, $\tau_{B^0\to J/\psi K^*(892)^0}$ = $1.524 \pm$ 0.006 $\pm$ 0.004 ps, $\tau_{B^0\to J/\psi K^0_{\rm S}}$ = $1.499 \pm$ 0.013 $\pm$ 0.005 ps, $\tau_{\Lambda_b^0\to J/\psi \Lambda}$ = $1.415 \pm$ 0.027 $\pm$ 0.006 ps and $\tau_{B^0_s\to J/\psi \phi}$ = $1.480 \pm$ 0.011 $\pm$ 0.005 ps, where the first uncertainty is statistical and the second is systematic. [...]
arXiv:1402.2554; LHCB-PAPER-2013-065; CERN-PH-EP-2014-018; LHCB-PAPER-2013-065; CERN-PH-EP-2014-018.- Geneva : CERN, 2014 - 26 p. - Published in : JHEP 04 (2014) 114 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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7.
Measurement of $\Upsilon$ production in $pp$ collisions at $\sqrt{s}=2.76$ TeV / LHCb collaboration
The production of $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3 $pb^{-1}$ collected in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=2.76$ TeV. The differential production cross-sections times dimuon branching fractions are measured as functions of the $\Upsilon$ transverse momentum and rapidity, over the ranges $p_{\rm T}<15$ GeV/$c$ and $2.0<y<4.5$. [...]
arXiv:1402.2539; CERN-PH-EP-2014-016; LHCB-PAPER-2013-066; CERN-PH-EP-2014-016; LHCB-PAPER-2013-066.- Geneva : CERN, 2014-04-29 - 21 p. - Published in : Eur. Phys. J. C 74 (2014) 2835 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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8.
Searches for $\Lambda^0_{b}$ and $\Xi^{0}_{b}$ decays to $K^0_{\rm S} p \pi^{-}$ and $K^0_{\rm S}p K^{-}$ final states with first observation of the $\Lambda^0_{b} \rightarrow K^0_{\rm S}p \pi^{-}$ decay / LHCb collaboration
A search for previously unobserved decays of beauty baryons to the final states $K^0_{\rm\scriptscriptstyle S} p \pi^{-}$ and $K^0_{\rm\scriptscriptstyle S}p K^{-}$ is reported. The analysis is based on a data sample corresponding to an integrated luminosity of $1.0\,$fb$^{-1}$ of $pp$ collisions. [...]
arXiv:1402.0770; LHCB-PAPER-2013-061; CERN-PH-EP-2014-012; LHCB-PAPER-2013-061; CERN-PH-EP-2014-012.- Geneva : CERN, 2014 - 24 p. - Published in : JHEP 04 (2014) 087 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF;
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9.
Measurement of the $B_c^+$ meson lifetime using $B_c^+ \to J/\psi\mu^+ \nu_{\mu} X$ decays / LHCb collaboration
The lifetime of the $B_c^+$ meson is measured using semileptonic decays having a $J/\psi$ meson and a muon in the final state. The data, corresponding to an integrated luminosity of $2\mathrm{~fb^{-1}}$, are collected by the LHCb detector in $pp$ collisions at a centre-of-mass energy of $8\,\mathrm{TeV}$. [...]
arXiv:1401.6932; CERN-PH-EP-2014-008; LHCB-PAPER-2013-063; CERN-PH-EP-2014-008; LHCB-PAPER-2013-063.- Geneva : CERN, 2014-05-01 - 28 p. - Published in : Eur. Phys. J. C 74 (2014) 2839 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF;
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10.
Search for Majorana neutrinos in $B^- \to \pi^+\mu^-\mu^-$ decays / LHCb collaboration
A search for heavy Majorana neutrinos produced in the $B^- \to \pi^+\mu^-\mu^-$ decay mode is performed using 3 fb$^{-1}$ of integrated luminosity collected with the LHCb detector in $pp$ collisions at center-of-mass energies of 7 TeV and 8 TeV at the LHC. Neutrinos with masses in the range 250-5000 MeV and lifetimes from zero to 1000 ps are probed. [...]
arXiv:1401.5361; CERN-PH-EP-2014-002; LHCB-PAPER-2013-064; LHCB-PAPER-2013-064; CERN-PH-EP-2014-002.- Geneva : CERN, 2014-04-03 - 8 p. - Published in : Phys. Rev. Lett. 112 (2014) 131802 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
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48 Luisier, J.
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