CERN Accelerating science

LHCb Detector Performance Papers

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2018-03-22
10:49
Mapping the material in the LHCb vertex locator using secondary hadronic interactions / Alexander, M. (Glasgow U.) ; Barter, W. (Manchester U.) ; Bay, A. (Ecole Polytechnique, Lausanne) ; Bel, L.J. (NIKHEF, Amsterdam) ; van Beuzekom, M. (NIKHEF, Amsterdam) ; Bogdanova, G. (SINP, Moscow) ; Borghi, S. (Manchester U.) ; Bowcock, T.J.V. (Liverpool U.) ; Buchanan, E. (Bristol U.) ; Buytaert, J. (CERN) et al.
Precise knowledge of the location of the material in the LHCb vertex locator (VELO) is essential to reducing background in searches for long-lived exotic particles, and in identifying jets that originate from beauty and charm quarks. Secondary interactions of hadrons produced in beam-gas collisions are used to map the location of material in the VELO. [...]
CERN-LHCb-DP-2018-002; CERN-LHCB-DP-2018-002; arXiv:1803.07466.- 2018-06-13 - 11 p. - Published in : JINST 13 (2018) P06008 Fulltext: PDF;

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2018-03-14
07:21
Selection and processing of calibration samples to measure the particle identification performance of the LHCb experiment in Run 2 / Aaij, R. (CERN) ; Anderlini, L. (INFN, Florence) ; Benson, S. (NIKHEF, Amsterdam) ; Cattaneo, M. (CERN) ; Charpentier, P. (CERN) ; Clemencic, M. (CERN) ; Falabella, A. (INFN, Bologna) ; Ferrari, F. (INFN, Bologna) ; Fontana, M. (CERN ; INFN, Cagliari) ; Gligorov, V.V. (Paris U., VI-VII) et al.
Since 2015, with the restart of the LHC for its second run of data taking, the LHCb experiment has been empowered with a dedicated computing model to select and analyse calibration samples to measure the performance of the particle identification (PID) detectors and algorithms. [...]
LHCb-DP-2018-001 ; LHCB-DP-2018-001 ; arXiv:1803.00824.
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Fulltext

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2018-01-16
15:02
The HeRSCheL detector: high-rapidity shower counters for LHCb / Akiba, K.Carvalho (Rio de Janeiro Federal U.) ; Alessio, F. (CERN) ; Bondar, N. (CERN ; St. Petersburg, INP) ; Byczynski, W. (CERN) ; Coco, V. (CERN) ; Collins, P. (CERN) ; Dumps, R. (CERN) ; Dzhelyadin, R. (Serpukhov, IHEP) ; Gandini, P. (Oxford U.) ; Gruberg Cazon, B. R. (Oxford U.) et al.
The HeRSCheL detector consists of a set of scintillating counters, designed to increase the coverage of the LHCb experiment in the high-rapidity regions on either side of the main spectrometer. The new detector improves the capabilities of LHCb for studies of diffractive interactions, most notably Central Exclusive Production. [...]
LHCB-DP-2016-003; arXiv:1801.04281; CERN-LHCB-DP-2016-003.- 2018-04-12 - 20 p. - Published in : JINST 13 (2018) P04017 Fulltext: PDF; Preprint: PDF; External link: Preprint

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2017-08-04
07:48
Improved performance of the LHCb Outer Tracker in LHC Run 2 / d'Argent, Ph. (Heidelberg U.) ; Dufour, L. (NIKHEF, Amsterdam) ; Grillo, L. (Milan Bicocca U.) ; de Vries, J.A. (NIKHEF, Amsterdam) ; Ukleja, A. (Warsaw, Inst. Nucl. Studies) ; Aaij, R. (CERN) ; Archilli, F. (NIKHEF, Amsterdam) ; Bachmann, S. (Heidelberg U.) ; Berninghoff, D. (Heidelberg U.) ; Birnkraut, A. (Tech. U., Dortmund (main)) et al. /LHCb Outer Tracker group
The LHCb Outer Tracker is a gaseous detector covering an area of $5\times 6 m^2$ with 12 double layers of straw tubes. The performance of the detector is presented based on data of the LHC Run 2 running period from 2015 and 2016. [...]
CERN-LHCB-DP-2017-001; arXiv:1708.00819.- 2017-11-20 - 28 p. - Published in : JINST 12 (2017) P11016 Fulltext: PDF; Preprint: PDF;

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2016-04-21
08:37
Tesla : an application for real-time data analysis in High Energy Physics / Aaij, R. (CERN) ; Amato, S. (Rio de Janeiro Federal U.) ; Anderlini, L. (INFN, Florence) ; Benson, S. (CERN) ; Cattaneo, M. (CERN) ; Clemencic, M. (CERN) ; Couturier, B. (CERN) ; Frank, M. (CERN) ; Gligorov, V.V. (Paris U., VI-VII) ; Head, T. (LPHE, Lausanne) et al.
Upgrades to the LHCb computing infrastructure in the first long shutdown of the LHC have allowed for high quality decay information to be calculated by the software trigger making a separate offline event reconstruction unnecessary. Furthermore, the storage space of the triggered candidate is an order of magnitude smaller than the entire raw event that would otherwise need to be persisted. [...]
CERN-LHCB-DP-2016-001; arXiv:1604.05596; CERN-LHCB-DP-2016-001.- 2016-11 - 8 p. - Published in : Comput. Phys. Commun. 208 (2016) 35-42 Fulltext: PDF; Preprint: PDF; External link: Preprint

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2014-12-22
07:58
LHCb Detector Performance / LHCb collaboration
The LHCb detector is a forward spectrometer at the Large Hadron Collider (LHC) at CERN. The experiment is designed for precision measurements of CP violation and rare decays of beauty and charm hadrons. [...]
LHCB-DP-2014-002; CERN-PH-EP-2014-290; arXiv:1412.6352; CERN-PH-EP-2014-290; LHCB-DP-2014-002; CERN-LHCB-DP-2014-002.- Geneva : CERN, 2015-03-05 - 73 p. - Published in : Int. J. Mod. Phys. A 30 (2015) 1530022 Preprint: PDF; World Scientific Open Access article: PDF; External link: Preprint

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2014-08-07
09:53
Measurement of the track reconstruction efficiency at LHCb / LHCb collaboration
The determination of track reconstruction efficiencies at LHCb using $J/\psi\rightarrow\mu^{+}\mu^{-}$ decays is presented. Efficiencies above $95\%$ are found for the data taking periods in 2010, 2011, and 2012. [...]
CERN-LHCB-DP-2013-002; arXiv:1408.1251; CERN-LHCB-DP-2013-002; LHCB-DP-2013-002.- 2015-02-12 - 24 p. - Published in : JINST 10 (2015) P02007 Fulltext: PDF; IOP Open Access article: PDF; Preprint: PDF; External link: Preprint

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2014-06-05
20:23
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. [...]
CERN-LHCB-DP-2014-001; arXiv:1405.7808; CERN-LHCB-DP-2014-001; LHCB-DP-2014-001.- 2014 - 61 p. - Published in : JINST 9 (2014) P09007 Fulltext: PDF; IOP Open Access article: PDF; Preprint: PDF; External link: Preprint

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2013-11-18
04:11
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. [...]
LHCB-DP-2013-003; arXiv:1311.3893; LHCB-DP-2013-003; CERN-LHCB-DP-2013-003.- 2014 - 30 p. - Published in : JINST 9 (2014) P01002 Fulltext: PDF; IOP Open Access article: PDF; External link: Preprint

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2013-06-04
04:13
Performance of the Muon Identification at LHCb / Archilli, F (Frascati) ; Baldini, W (INFN, Ferrara) ; Bencivenni, G (Frascati) ; Bondar, N (St. Petersburg, INP) ; Bonivento, W (INFN, Cagliari) ; Cadeddu, S (INFN, Cagliari) ; Campana, P (Frascati) ; Cardini, A (INFN, Cagliari) ; Ciambrone, P (Frascati) ; Cid Vidal, X (CERN) et al. /LHCb MuonID group
The performance of the muon identification in LHCb is extracted from data using muons and hadrons produced in $J/\psi \to \mu^+ \mu^-$, $\Lambda ^0 \to p\pi^-$ and $D^{\star +} \to \pi^+ D^0(K^- \pi^+)$ decays. The muon identification procedure is based on the pattern of hits in the muon chambers. [...]
arXiv:1306.0249; CERN-LHCB-DP-2013-001; LHCB-DP-2013-001.- 2013 - 17 p. - Published in : JINST 8 (2013) P10020 Fulltext: PDF; IOP Open Access article: PDF; External link: Preprint

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