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CERN Document Server 35 notices trouvées  1 - 10suivantfin  aller vers la notice: La recherche a duré 0.97 secondes. 
1.
Performance of the LHCb Vertex Locator / Aaij, R. (Nikhef, Amsterdam) ; Affolder, A. (Liverpool U.) ; Akiba, K. (UFRJ, Rio de Janeiro) ; Alexander, M. (Glasgow U.) ; Ali, S. (Nikhef, Amsterdam) ; Appleby, R.B. (Manchester U.) ; Artuso, M. (Syracuse U. (main)) ; Bates, A. (Glasgow U.) ; Bay, A. (Ecole Polytechnique, Lausanne) ; Behrendt, O. (CERN) et al. /LHCb VELO Group
The Vertex Locator (VELO) is a silicon microstrip detector that surrounds the proton-proton interaction region in the LHCb experiment. The performance of the detector during the first years of its physics operation is reviewed. [...]
arXiv:1405.7808; CERN-LHCB-DP-2014-001.- 2014 - 61 p. - Published in : JINST 9 (2014) P09007 Fulltext: arXiv:1405.7808 - PDF; 10.1088_1748-0221_9_09_P09007 - PDF; IOP Open Access article: PDF; External link: Preprint
2.
Radiation damage in the LHCb Vertex Locator / Affolder, A. (Liverpool U.) ; Akiba, K. (Rio de Janeiro Federal U.) ; Alexander, M. (Glasgow U.) ; Ali, S. (NIKHEF, Amsterdam) ; Artuso, M. (Syracuse U.) ; Benton, J. (Bristol U.) ; van Beuzekom, M. (NIKHEF, Amsterdam) ; Bjornstad, P.M. (Manchester U.) ; Bogdanova, G. (SINP, Moscow) ; Borghi, S. (Glasgow U. ; Manchester U.) et al. /LHCb VELO group
The LHCb Vertex Locator (VELO) is a silicon strip detector designed to reconstruct charged particle trajectories and vertices produced at the LHCb interaction region. During the first two years of data collection, the 84 VELO sensors have been exposed to a range of fluences up to a maximum value of approximately $\rm{45 \times 10^{12}\,1\,MeV}$ neutron equivalent ($\rm{1\,MeV\,n_{eq}}$). [...]
CERN-LHCB-DP-2012-005; arXiv:1302.5259; CERN-LHCB-DP-2012-005; LHCB-DP-2012-005.- 2013-08-01 - 20 p. - Published in : JINST 8 (2013) P08002 IOP Open Access article: PDF; Preprint: PDF; External link: Preprint
3.
Implications of LHCb measurements and future prospects / LHCb Collaboration
During 2011 the LHCb experiment at CERN collected $1.0 {\mbox{fb}^{-1}}$ of $\sqrt{s} = 7 {\mathrm{\,Te\kern -0.1em V}}$ $pp$ collisions. Due to the large heavy quark production cross-sections, these data provide unprecedented samples of heavy flavoured hadrons. [...]
arXiv:1208.3355; LHCb-PUB-2012-006; LHCB-PAPER-2012-031; CERN-PH-EP-2012-334; LHCb-PUB-2012-006; LHCB-PAPER-2012-031; CERN-PH-EP-2012-334.- Geneva : CERN, 2013-04-26 - 178 p. - Published in : Eur. Phys. J. C 73 (2013) 2373 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External links: PDF on ECONF; Proceedings write-up on ECONF
4.
Framework TDR for the LHCb Upgrade : Technical Design Report / LHCb collaboration
This document is a Framework Technical Design Report for the upgrade of the LHCb experiment. [...]
CERN-LHCC-2012-007 ; LHCb-TDR-12.
- 2012. - 62 p. (Technical design report. LHCb ; 12)
Fulltext
5.
Measurement of the cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ for prompt $\chi_c$ production at $\sqrt{s}=7$ TeV / LHCb Collaboration
The prompt production of the charmonium $\chi_{c1}$ and $\chi_{c2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=7$ TeV. The $\chi_c$ mesons are identified through their decays $\chi_c\to J/\psi\,\gamma$ with $J/\psi \to \mu^+ \mu^-$ using 36 $\mathrm{pb^{-1}}$ of data collected by the LHCb detector in 2010. [...]
arXiv:1202.1080; LHCB-PAPER-2011-019; CERN-PH-EP-2011-227; LHCB-PAPER-2011-019; CERN-PH-EP-2011-227.- Geneva : CERN, 2013-07-16 - 9 p. - Published in : Phys. Lett. B 714 (2012) 215-223 Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: DURHAM
6.
Observation of X(3872) production in $pp$ collisions at $\sqrt{s}=7$ TeV / LHCb Collaboration
Using 34.7 pb-1 of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at sqrt(s) = 7 TeV is observed for the first time. Candidates are selected in the X(3872) -> J/psi pi+ pi- decay mode, and used to measure sigma(pp -> X(3872) + anything) B(X(3872)-> J/psi pi+ pi-) = 4.7 +- 1.1 (stat) +- 0.7 (syst), where sigma(pp -> X(3872) + anything) is the inclusive production cross-section of X(3872) mesons with rapidity in the range 2.5-4.5 and transverse momentum in the range 5-20 GeV/c [...]
arXiv:1112.5310; LHCB-PAPER-2011-034; CERN-PH-EP-2011-216; LHCB-PAPER-2011-034; CERN-PH-EP-2011-216.- Geneva : CERN, 2012-05-04 - 11 p. - Published in : Eur. Phys. J. C 72 (2012) 1972 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
7.
Measurement of $b$-hadron masses / LHCb Collaboration
Measurements of $b$-hadron masses are performed with the exclusive decay modes $B^+\to J/\psi K^+$, $B^0 \to J/\psi K^{*0}$, $B^0 \to J/\psi K^0_{\rm S}$, $B_s^0 \to J/\psi\phi$ and $\Lambda^0_b\to J/\psi\Lambda$ using an integrated luminosity of 35 pb$^{-1}$ collected in $pp$ collisions at a centre-of-mass energy of 7 TeV by the LHCb experiment. The momentum scale is calibrated with $J/\psi \to \mu^+\mu^-$ decays and verified to be known to a relative precision of $2 \times 10^{-4}$ using other two-body decays. [...]
arXiv:1112.4896; LHCB-PAPER-2011-035; CERN-PH-EP-2011-226; LHCB-PAPER-2011-035; CERN-PH-EP-2011-226.- Geneva : CERN, 2013-07-16 - 8 p. - Published in : Phys. Lett. B 708 (2012) 241-248 Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
8.
Observation of $\overline{B}^0_s \to J/\psi f'_2(1525)$ in $J/\psi K^+K^-$ final states / LHCb Collaboration
In this Letter the decay $\overline{B}^0_s \to J/\psi K^+ K^-$ is investigated. Although the $J/\psi \phi$ channel is well known, final states at higher $K^+K^-$ masses have not previously been studied. [...]
arXiv:1112.4695; CERN-PH-EP-2011-212; LHCB-PAPER-2011-026; CERN-PH-EP-2011-212; LHCB-PAPER-2011-026.- Geneva : CERN, 2012 - 8 p. - Published in : Phys. Rev. Lett. 108 (2012) 151801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
9.
Measurement of mixing and CP violation parameters in two-body charm decays / LHCb Collaboration
A study of mixing and indirect CP violation in D0 mesons through the determination of the parameters y_CP and A_\Gamma\ is presented. The parameter y_CP is the deviation from unity of the ratio of effective lifetimes measured in D0 decays to the CP eigenstate K+K- with respect to decays to the Cabibbo favoured mode K-\pi+. [...]
arXiv:1112.4698; LHCB-PAPER-2011-032; CERN-PH-EP-2011-206; LHCB-PAPER-2011-032; CERN-PH-EP-2011-206.- Geneva : CERN, 2012 - 20 p. - Published in : JHEP 04 (2012) 129 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
10.
Measurement of the $B^0_s-\overline{B}^0_s$ oscillation frequency $\Delta m_s$ in $B^0_s \to D^-_s (3)\pi$ decays / LHCb Collaboration
The $B^0_s$-$\overline{B}^0_s$ oscillation frequency $\Delta m_s$ is measured with 36 pb$^{-1}$ of data collected in $pp$ collisions at $\sqrt{s}$ = 7 TeV by the LHCb experiment at the Large Hadron Collider. A total of 1381 $B^0_s \rightarrow D_s^- \pi^+$ and $B^0_s \rightarrow D_s^- \pi^+\pi^-\pi^+$ signal decays are reconstructed, with average decay time resolutions of 44~fs and 36~fs, respectively. [...]
arXiv:1112.4311; LHCB-PAPER-2011-010; CERN-PH-EP-2011-194; LHCB-PAPER-2011-010; CERN-PH-EP-2011-194.- Geneva : CERN, 2013-07-16 - 8 p. - Published in : Phys. Lett. B 709 (2012) 177-184 Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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