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CERN Document Server Намерени са 47 записа  1 - 10следващкрай  отиване на запис: Търсенето отне 0.56 секунди. 
1.
Performance of the LHCb Outer Tracker / Arink, R (NIKHEF, Amsterdam) ; Bachmann, S. (Heidelberg U.) ; Bagaturia, Y. (Heidelberg U.) ; Band, H. (NIKHEF, Amsterdam) ; Bauer, Th. (NIKHEF, Amsterdam) ; Berkien, A. (NIKHEF, Amsterdam) ; Farber, Ch. (Heidelberg U.) ; Bien, A. (Heidelberg U.) ; Blouw, J. (Heidelberg U.) ; Ceelie, L. (NIKHEF, Amsterdam) et al. /LHCb Outer Tracker group
The LHCb Outer Tracker is a gaseous detector covering an area of 5x6 m2 with 12 double layers of straw tubes. The detector with its services are described together with the commissioning and calibration procedures. [...]
arXiv:1311.3893; LHCB-DP-2013-003.- 2014-01-07 - 30 p. - Published in : JINST 9 (2014) P01002 Fulltext: PDF; IOP Open Access article: PDF; External link: Preprint
2.
The readout system for the LHCb Outer Tracker / Wiedner, D (CERN) ; Albrecht, J (Heidelberg U.) ; Apeldorn , G (NIKHEF, Amsterdam) ; Bachmann, S (Heidelberg U.) ; Bagaturi , I (CERN) ; Bauer, T (NIKHEF, Amsterdam) ; Berkien, A (NIKHEF, Amsterdam) ; Blouw, J (NIKHEF, Amsterdam) ; Bos, E (NIKHEF, Amsterdam) ; Deisenroth, M (Heidelberg U.) et al.
The LHCb Outer Tracker is composed of 55 000 straw drift tubes. The requirements for the OT electronics are the precise (1 ns) drift time measurement at 6 % occupancy and 1 MHz readout. [...]
LHCb-PROC-2006-033; CERN-LHCb-PROC-2006-033.- Geneva : CERN, 2006 - 5 p. Fulltext: PDF; Published version from CERN: PDF;
In : 12th Workshop on Electronics For LHC and Future Experiments, Valencia, Spain, 25 - 29 Sep 2006, pp.148-152 (CERN-2007-001)
3.
Entwicklung, Implementierung and Test eines FPGA-Designs für die Level-1-Frontend-Elektronik des Äusseren Spurkammersystems im LHCb-Detektor / Nedos, Mirco
For measurements of CP-violation in the B-meson system, as well as the search for new physics, the LHCb-experiment has been built at the Large Hadron Collider at CERN [...]
CERN-THESIS-2008-164 - 161 p.

Fulltext
4.
Measurement of $\Upsilon$ production in $pp$ collisions at $\sqrt{s} = 7$ TeV / LHCb Collaboration
The production of Upsilon(1S), Upsilon(2S) and Upsilon(3S) mesons in proton-proton collisions at the centre-of-mass energy of sqrt(s)=7 TeV is studied with the LHCb detector. The analysis is based on a data sample of 25 pb-1 collected at the Large Hadron Collider. [...]
arXiv:1202.6579; CERN-PH-EP-2012-051; LHCB-PAPER-2011-036; CERN-PH-EP-2012-051; LHCB-PAPER-2011-036.- Geneva : CERN, 2012-06-07 - 22 p. - Published in : Eur. Phys. J. C 72 (2012) 2025 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: DURHAM
5.
Measurement of the ratio of branching fractions ${\cal B}(B^0 \to K^{\ast 0} \gamma)/{\cal B}(B^0_s \to \phi \gamma)$ / LHCb Collaboration
The ratio of branching fractions of the radiative $B$ decays $B^0\to K^{*0}\gamma$ and $B^0_s\to \phi\gamma$ has been measured using $0.37\,$fb$^{-1}$ of $pp$ collisions at a centre of mass energy of $\sqrt{s}=7\,$TeV, collected by the LHCb experiment. The value obtained is \begin{equation} \frac{{\cal B}(B^0\to K^{*0}\gamma)}{{\cal B}(B^0_s\to \phi\gamma)} = 1.12 \pm 0.08^{+0.06}_{-0.04}\phantom{.}^{+0.09}_{-0.08},\nonumber \end{equation} where the first uncertainty is statistical, the second systematic and the third is associated to the ratio of fragmentation fractions $f_s/f_d$. [...]
arXiv:1202.6267; LHCB-PAPER-2011-042; CERN-PH-EP-2012-041; CERN-PH-EP-2012-041; LHCB-PAPER-2011-042.- Geneva : CERN, 2012 - 15 p. - Published in : Phys. Rev. D 85 (2012) 112013 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
6.
Opposite-side flavour tagging of $B$ mesons at the LHCb experiment / LHCb Collaboration
The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B+ -> J/psi K+, B0 -> J/psi K*0 and B0 -> D*- mu+ nu_mu decay modes with 0.37 fb^-1 of data collected in pp collisions at sqrt(s) = 7 TeV during the 2011 physics run. [...]
arXiv:1202.4979; CERN-PH-EP-2012-039; LHCB-PAPER-2011-027; CERN-PH-EP-2012-039; LHCB-PAPER-2011-027.- Geneva : CERN, 2012-06-07 - 22 p. - Published in : Eur. Phys. J. C 72 (2012) 2022 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
7.
Measurement of the $B^\pm$ production cross-section in $pp$ collisions at $\sqrt{s}=7$ TeV / LHCb Collaboration
The production of B+- mesons in proton-proton collisions at sqrt(s)=7 TeV is studied using 35 pb-1 of data collected by the LHCb detector. The B+- mesons are reconstructed exclusively in the B+- -> J/psi K+- mode, with J/psi -> mu+ mu-. [...]
arXiv:1202.4812; CERN-PH-EP-2012-047; LHCB-PAPER-2011-043; CERN-PH-EP-2012-047; LHCB-PAPER-2011-043.- Geneva : CERN, 2012 - 7 p. - Published in : JHEP 04 (2012) 093 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: DURHAM
8.
Search for the $X(4140)$ state in $B^+\to J/\psi\phi K^+$ decays / LHCb Collaboration
A search for the X(4140) state in B+ to J/psi phi K+ decays is performed with 0.37 fb-1 of pp collisions at sqrt(s)=7 TeV collected by the LHCb experiment. No evidence for this state is found, in 2.4 sigma disagreement with a measurement by CDF. [...]
arXiv:1202.5087; CERN-PH-EP-2012-004; LHCB-PAPER-2011-033; CERN-PH-EP-2012-004; LHCB-PAPER-2011-033.- Geneva : CERN, 2012 - 15 p. - Published in : Phys. Rev. D 85 (2012) 091103 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
9.
Determination of the sign of the decay width difference in the $B^0_s$ system / LHCb Collaboration
The interference between the $K^+K^-$ S-wave and P-wave amplitudes in $B_s \rightarrow J/\psi K^+K^-$ decays with the $K^+K^-$ pairs in the region around the $\phi(1020)$ resonance is used to determine the variation of the difference of the strong phase between these amplitudes as a function of $K^+K^-$ invariant mass. Combined with the results from our $CP$ asymmetry measurements in the $B_s \rightarrow J/\psi \phi$ decays, we conclude that the $B_s$ mass eigenstate that is almost $CP =+1$ is lighter and decays faster than the mass eigenstate that is almost $CP =-1$. [...]
arXiv:1202.4717; CERN-PH-EP-2012-050; LHCB-PAPER-2011-028; CERN-PH-EP-2012-050; LHCB-PAPER-2011-028.- Geneva : CERN, 2012 - 7 p. - Published in : Phys. Rev. Lett. 108 (2012) 241801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
10.
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

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43 Nedos, M
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