CERN Accelerating science

002729028 001__ 2729028
002729028 005__ 20230227164720.0
002729028 0248_ $$aoai:cds.cern.ch:2729028$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
002729028 035__ $$9arXiv$$aoai:arXiv.org:2008.11556
002729028 035__ $$9Inspire$$aoai:inspirehep.net:1813379$$d2023-02-13T16:53:00Z$$h2023-02-14T03:15:17Z$$mmarcxml$$ttrue$$uhttps://inspirehep.net/api/oai2d
002729028 035__ $$9Inspire$$a1813379
002729028 037__ $$9arXiv$$aarXiv:2008.11556$$cphysics.ins-det
002729028 037__ $$aLHCb-DP-2020-001
002729028 041__ $$aeng
002729028 088__ $$9CERN-LHCb-DP-2020-001
002729028 100__ $$aAbellán Beteta, Carlos$$uICC, Barcelona U.
002729028 245__ $$9arXiv$$aCalibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC
002729028 269__ $$c2020-08-26
002729028 300__ $$a51 p
002729028 500__ $$9arXiv$$aAll figures and tables, along with any supplementary material and additional information, are available at http://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-DP-2020-001.html (LHCb public pages)
002729028 520__ $$9arXiv$$aThe calibration and performance of the LHCb Calorimeter system in Run 1 and 2 at the LHC are described. After a brief description of the sub-detectors and of their role in the trigger, the calibration methods used for each part of the system are reviewed. The changes which occurred with the increase of beam energy in Run 2 are explained. The performances of the calorimetry for $\gamma$ and $\pi^0$ are detailed. A few results from collisions recorded at $\sqrt {s}$ = 7, 8 and 13 TeV are shown.
002729028 540__ $$3preprint$$aCC-BY-4.0$$uhttp://creativecommons.org/licenses/by/4.0/
002729028 542__ $$3preprint$$dCERN$$g2020
002729028 65017 $$2arXiv$$ahep-ex
002729028 65017 $$2SzGeCERN$$aParticle Physics - Experiment
002729028 65017 $$2arXiv$$aphysics.ins-det
002729028 65017 $$2SzGeCERN$$aDetectors and Experimental Techniques
002729028 690C_ $$aCERN
002729028 690C_ $$aPREPRINT
002729028 690C_ $$aLHCb_DP
002729028 693__ $$aCERN LHC$$eLHCb
002729028 700__ $$aAlfonso Albero, A.$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aAmhis, Y.$$iINSPIRE-00260470$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aBarsuk, S.$$iINSPIRE-00257536$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aBeigbeder-Beau, C.$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aBelyaev, I.$$iINSPIRE-00258730$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aBonnefoy, R.$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aBreton, D.$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aCallot, O.$$iINSPIRE-00070641$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aCalvo Gomez, M.$$iINSPIRE-00259475$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aCamboni, A.$$iINSPIRE-00259480$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aChanal, H.$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aCharlet, D.$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aChefdeville, M.$$iINSPIRE-02701689$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aCoco, V.$$iINSPIRE-00262900$$uCERN$$vEuropean Organization for Nuclear Research (CERN), Geneva, Switzerland
002729028 700__ $$aCogneras, E.$$iINSPIRE-00305695$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aComerma-Montells, A.$$iINSPIRE-00259490$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aCoquereau, S.$$iINSPIRE-00388698$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aDeschamps, O.$$iINSPIRE-00257367$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aDomingo Bonal, F.$$iINSPIRE-00341066$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aDrancourt, C.$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aDuarte, O.$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aDumont Dayot, N.$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aDzhelyadin, R.$$iINSPIRE-00077380$$uKurchatov Inst., Moscow$$vInstitute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia
002729028 700__ $$aEgorychev, V.$$iINSPIRE-00259251$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aEsperante, D.$$iINSPIRE-00259673$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aFilippov, S.$$iINSPIRE-00259378$$uMoscow, INR$$vInstitute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia
002729028 700__ $$aGarrido, L.$$iINSPIRE-00157725$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aGascon, D.$$iINSPIRE-00259509$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aGhez, Ph.$$iINSPIRE-00084545$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aGioi, L.L.$$iINSPIRE-00041895$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aGironella Gironell, P.$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aGolubkov, D.$$iINSPIRE-00261070$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aGolutvin, A.$$iINSPIRE-00259263$$uNatl. U. Sci. Tech., Moscow$$uImperial Coll., London$$vNational University of Science and Technology "MISIS", Moscow, Russia$$vImperial College London, London, United Kingdom
002729028 700__ $$aGrabalosa Gàndara, M.$$iINSPIRE-00259524$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aGraciani Diaz, R.$$iINSPIRE-00259536$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aGraugés, E.$$iINSPIRE-00086454$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aGushchin, E.$$iINSPIRE-00259385$$uMoscow RAS, IRE$$vInstitute for Nuclear Research of the Russian Academy of Sciences (INR RAS), Moscow, Russia
002729028 700__ $$aGuz, Yu.$$iINSPIRE-00259449$$uCERN$$uKurchatov Inst., Moscow$$vEuropean Organization for Nuclear Research (CERN), Geneva, Switzerland$$vInstitute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia
002729028 700__ $$aHadjivasiliou, C.$$iINSPIRE-00341268$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aJean-Marie, B.$$iINSPIRE-00093213$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aKonoplyannikov, A.$$iINSPIRE-00205394$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aKristic, R.$$iINSPIRE-00260163$$uCERN$$vEuropean Organization for Nuclear Research (CERN), Geneva, Switzerland
002729028 700__ $$aKvaratskheliya, T.$$iINSPIRE-00259275$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aLefèvre, R.$$iINSPIRE-00041022$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aLefrançois, J.$$iINSPIRE-00144068$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aLi, Y.$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aMachefert, F.$$iINSPIRE-00103518$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aMachikhiliyan, I.$$iINSPIRE-00257343$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aMarchand, J.-F.$$iINSPIRE-00219901$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aMarin Benito, C.$$iINSPIRE-00391574$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aMartens, A.$$iINSPIRE-00257573$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aMartin-Sànchez, A.$$iINSPIRE-00341580$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aMatveev, V.$$iINSPIRE-00164894$$uKurchatov Inst., Moscow$$vInstitute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia
002729028 700__ $$aMauricio, J.$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aMinard, M.-N.$$iINSPIRE-00201357$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aMonteil, S.$$iINSPIRE-00257390$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aNiess, V.$$iINSPIRE-00257403$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aObraztsov, V.$$iINSPIRE-00191751$$uKurchatov Inst., Moscow$$vInstitute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia
002729028 700__ $$aPereima, D.$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aPerret, P.$$iINSPIRE-00115778$$uClermont-Ferrand U.$$vUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
002729028 700__ $$aPicatoste Olloqui, E.$$iINSPIRE-00259574$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aPietrzyk, B.$$iINSPIRE-00257359$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aPuig Navarro, A.$$iINSPIRE-00259590$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aRives-Molina, V.$$iINSPIRE-00357276$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aRobbe, P.$$iINSPIRE-00050542$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aRoselló, M.$$iINSPIRE-00259617$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aRuiz, H.$$iINSPIRE-00259629$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aSanchez Mayordomo, C.$$iINSPIRE-00454015$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aSavrina, D.$$iINSPIRE-00259293$$uMoscow State U.$$uKurchatov Inst., Moscow$$vInstitute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aSchopper, A.$$iINSPIRE-00171861$$uCERN$$vEuropean Organization for Nuclear Research (CERN), Geneva, Switzerland
002729028 700__ $$aSchune, M.H.$$iINSPIRE-00124570$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aSemennikov, A.$$iINSPIRE-00259305$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aShatalov, P.$$iINSPIRE-00223506$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 700__ $$aSoldatov, M.$$uKurchatov Inst., Moscow$$vInstitute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia
002729028 700__ $$aStenyakin, O.$$iINSPIRE-00010650$$uKurchatov Inst., Moscow$$vInstitute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia
002729028 700__ $$aTisserand, V.$$iINSPIRE-00131575$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aT'Jampens, S.$$iINSPIRE-00036863$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aTocut, V.$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aTournefier, E.$$iINSPIRE-00341842$$uAnnecy, LAPP$$vUniv. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
002729028 700__ $$aVallier, A.$$iINSPIRE-00392294$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aVazquez Gomez, R.$$iINSPIRE-00259633$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aViaud, B.$$iINSPIRE-00257597$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aVilasis-Cardona, X.$$iINSPIRE-00259644$$uICC, Barcelona U.$$vICCUB, Universitat de Barcelona, Barcelona, Spain
002729028 700__ $$aWinn, M.$$iINSPIRE-00385042$$uIJCLab, Orsay$$vUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
002729028 700__ $$aYushchenko, O.$$iINSPIRE-00200283$$uKurchatov Inst., Moscow$$vInstitute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI), Protvino, Russia, Protvino, Russia
002729028 700__ $$aZhokhov, A.$$iINSPIRE-00392752$$uKurchatov Inst., Moscow$$vInstitute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI), Moscow, Russia, Moscow, Russia
002729028 8564_ $$82245390$$s45203$$uhttp://cds.cern.ch/record/2729028/files/fig25.png$$y00032 Invariant mass distribution of $\Bz\to \Kstarz(\Kp \pim)\gamma$ candidates in Run 1. The blue curve corresponds to the mass fit. The $\Kstarz\gamma$ signal component of the fit function (red line) and the various background contaminations are shown.
002729028 8564_ $$82245391$$s4468$$uhttp://cds.cern.ch/record/2729028/files/fig15b.png$$y00018 Distribution of $E/p$ in the \ecal for electrons (red) and hadrons (blue) using 2011 data (left). Fraction of gain lost for electrons in the \ecal as a function of the integrated luminosity (right). The two first steps correspond to the \hv changes done during the data taking period, the third one is due to annealing during one month without beam.
002729028 8564_ $$82245392$$s8992$$uhttp://cds.cern.ch/record/2729028/files/fig15a.png$$y00017 Distribution of $E/p$ in the \ecal for electrons (red) and hadrons (blue) using 2011 data (left). Fraction of gain lost for electrons in the \ecal as a function of the integrated luminosity (right). The two first steps correspond to the \hv changes done during the data taking period, the third one is due to annealing during one month without beam.
002729028 8564_ $$82245393$$s54661$$uhttp://cds.cern.ch/record/2729028/files/fig21.png$$y00026 Light yield $Y^r_i$ averaged over the 44 \hcal most central cells as a function of the delivered luminosity.
002729028 8564_ $$82245394$$s27005$$uhttp://cds.cern.ch/record/2729028/files/fig22.png$$y00027 $E_{\rm \hcal}$ and $p_{\rm track}$ distributions for track selected in different cells, for the \hcal calibration based on $E/p$. The lines show the cuts applied for the $E/p$ calculations.
002729028 8564_ $$82245395$$s949775$$uhttp://cds.cern.ch/record/2729028/files/fig1.png$$y00000 Layout of the \lhcb experiment.
002729028 8564_ $$82245396$$s3983700$$uhttp://cds.cern.ch/record/2729028/files/2008.11556.pdf$$yFulltext
002729028 8564_ $$82245397$$s100886$$uhttp://cds.cern.ch/record/2729028/files/fig6.png$$y00006 \hcal cell.
002729028 8564_ $$82245398$$s5986$$uhttp://cds.cern.ch/record/2729028/files/fig7.png$$y00007 Expected efficiency of the \spd response to particles as a function of the threshold value, obtained from the integration of convoluted Poisson and Landau distributions. The solid line corresponds to the position of the averaged minimum energy ionisation (MIP), the dashed one to the threshold set at $0.5\,E_{\rm MIP}$.
002729028 8564_ $$82245399$$s382993$$uhttp://cds.cern.ch/record/2729028/files/fig4.png$$y00004 \spd cell.
002729028 8564_ $$82245400$$s119684$$uhttp://cds.cern.ch/record/2729028/files/fig26.png$$y00033 $B\to K^* \gamma$ mass resolution in terms of photon mis-calibration from simulation for high energy photons. The comparison with the actual value suggests an intrinsic resolution in the photon energy of $2$\%.
002729028 8564_ $$82245401$$s4715$$uhttp://cds.cern.ch/record/2729028/files/fig3b.png$$y00003 Calorimeter cells segmentation of the \spd, \presh, and \ecal (left), and the \hcal (right).
002729028 8564_ $$82245402$$s6042$$uhttp://cds.cern.ch/record/2729028/files/fig3a.png$$y00002 Calorimeter cells segmentation of the \spd, \presh, and \ecal (left), and the \hcal (right).
002729028 8564_ $$82245403$$s10070$$uhttp://cds.cern.ch/record/2729028/files/fig8.png$$y00008 Examples of efficiency curves for individual \spd cell fits covering the whole correction factor range.
002729028 8564_ $$82245404$$s44997$$uhttp://cds.cern.ch/record/2729028/files/fig19.png$$y00023 Variation of the sensitivities of the \hcal cells in 2011.
002729028 8564_ $$82245405$$s6291$$uhttp://cds.cern.ch/record/2729028/files/fig9.png$$y00009 Distribution of the cell efficiencies in the \spd in 2011.
002729028 8564_ $$82245406$$s20488$$uhttp://cds.cern.ch/record/2729028/files/fig23b.png$$y00029 Averaged $E_{\rm \hcal}/p_{\rm track}$ values in the \hcal cells, right after a $^{137}$Cs calibration (left). Ratio between $E/p$-based calibration coefficients in a 5 week time period and the corresponding ratio of the \led corrections for the same period (right).
002729028 8564_ $$82245407$$s28841$$uhttp://cds.cern.ch/record/2729028/files/fig23a.png$$y00028 Averaged $E_{\rm \hcal}/p_{\rm track}$ values in the \hcal cells, right after a $^{137}$Cs calibration (left). Ratio between $E/p$-based calibration coefficients in a 5 week time period and the corresponding ratio of the \led corrections for the same period (right).
002729028 8564_ $$82245408$$s33900$$uhttp://cds.cern.ch/record/2729028/files/fig27b.png$$y00035 Mass distribution of the reconstructed $\Dz\to \Km\pip \piz$ candidates with resolved \piz (left) and merged \piz (right) obtained from the 2011 data sample. The blue curve corresponds to a fit. The signal component of the fit function (red dashed line) and the background (green dash-dotted line) contributions are shown.
002729028 8564_ $$82245409$$s31754$$uhttp://cds.cern.ch/record/2729028/files/fig27a.png$$y00034 Mass distribution of the reconstructed $\Dz\to \Km\pip \piz$ candidates with resolved \piz (left) and merged \piz (right) obtained from the 2011 data sample. The blue curve corresponds to a fit. The signal component of the fit function (red dashed line) and the background (green dash-dotted line) contributions are shown.
002729028 8564_ $$82245410$$s31769$$uhttp://cds.cern.ch/record/2729028/files/fig35a.png$$y00046 Distribution of $E/p$ from electrons coming from converted photons with $E_{\rm \presh}>50\mev$, with at least one hit on the \spd and a track with $\pt > 200\mevc$ pointing into the \ecal cluster ($\chi^2_{2D}<25$), and a matching positron to forming invariant mass $M(ee) < 100$ \mevcc (left). Resolution for $\sigma(E/p)$ as a function of energy (right).
002729028 8564_ $$82245411$$s8589$$uhttp://cds.cern.ch/record/2729028/files/fig35b.png$$y00047 Distribution of $E/p$ from electrons coming from converted photons with $E_{\rm \presh}>50\mev$, with at least one hit on the \spd and a track with $\pt > 200\mevc$ pointing into the \ecal cluster ($\chi^2_{2D}<25$), and a matching positron to forming invariant mass $M(ee) < 100$ \mevcc (left). Resolution for $\sigma(E/p)$ as a function of energy (right).
002729028 8564_ $$82245412$$s42003$$uhttp://cds.cern.ch/record/2729028/files/fig39a.png$$y00052 Distribution of $\Delta M = M(\Dz\pip)-M(\Km\pip\piz)$ with resolved (left) and merged $\piz$ (right) in 2017-2018.
002729028 8564_ $$82245413$$s42467$$uhttp://cds.cern.ch/record/2729028/files/fig39b.png$$y00053 Distribution of $\Delta M = M(\Dz\pip)-M(\Km\pip\piz)$ with resolved (left) and merged $\piz$ (right) in 2017-2018.
002729028 8564_ $$82245414$$s8889$$uhttp://cds.cern.ch/record/2729028/files/fig24a.png$$y00030 Distribution of the muon energy deposition in the outer cells (left) and in the most central cells (right) of the \hcal.
002729028 8564_ $$82245415$$s15608$$uhttp://cds.cern.ch/record/2729028/files/fig29a.png$$y00039 Photon identification efficiencies as a function of the applied cut for IsNotH (hadron rejection) (left) and IsNotE (electron rejection) (right) with $\Bz\to\Kstarz\gamma$ data (red dashed line) and simulation (blue solid line).
002729028 8564_ $$82245416$$s16337$$uhttp://cds.cern.ch/record/2729028/files/fig29b.png$$y00040 Photon identification efficiencies as a function of the applied cut for IsNotH (hadron rejection) (left) and IsNotE (electron rejection) (right) with $\Bz\to\Kstarz\gamma$ data (red dashed line) and simulation (blue solid line).
002729028 8564_ $$82245417$$s35214$$uhttp://cds.cern.ch/record/2729028/files/fig14a.png$$y00015 Value of the fitted \piz mass as a function of time (run number, 2011 data). The decrease observed is due to the \ecal ageing (left). \piz mass fit value as a function of time (run number) after applying the gain correction (right).
002729028 8564_ $$82245418$$s72071$$uhttp://cds.cern.ch/record/2729028/files/fig37.png$$y00050 Invariant mass distributions for selected $\Bs\to \jpsi\eta^{\left(\prime\right)}$ candidates. Black dots are the data, thin solid orange lines are the $\Bs$ contributions and orange dot-dashed lines are the $\Bz$ contributions. The blue dashed lines show the combinatorial background contributions and the dotted blue lines show the partially reconstructed background components. The total fit functions are drawn as solid blue lines.
002729028 8564_ $$82245419$$s11899$$uhttp://cds.cern.ch/record/2729028/files/fig34.png$$y00045 Performance of the calorimeter for electron identification with $\Delta\log{\mathcal L}_{e/h}^{\rm CALO}$ cuts: efficiency as a function of momentum (left) and mis-identification rate (right) as a function of momentum.
002729028 8564_ $$82245420$$s36329$$uhttp://cds.cern.ch/record/2729028/files/fig14b.png$$y00016 Value of the fitted \piz mass as a function of time (run number, 2011 data). The decrease observed is due to the \ecal ageing (left). \piz mass fit value as a function of time (run number) after applying the gain correction (right).
002729028 8564_ $$82245421$$s32453$$uhttp://cds.cern.ch/record/2729028/files/fig32.png$$y00043 Distribution of $\Delta M = M(\mup\mun\gamma)-M(\mup\mun)$ for $p_{\jpsi}$ in the \pt-range 4-5\gevc. Fits are also shown, with the total fitted function (blue solid curve), the \chicone signal (green dashed curve), the \chictwo signal (red dot-dashed curve) and the \chiczero signal (purple long-dashed curve).
002729028 8564_ $$82245422$$s5247$$uhttp://cds.cern.ch/record/2729028/files/fig33.png$$y00044 Electron identification efficiency versus mis-identification rate.
002729028 8564_ $$82245423$$s20311$$uhttp://cds.cern.ch/record/2729028/files/fig30.png$$y00041 Purity as a function of efficiency for (green) the full photon candidate sample, (blue) converted candidates according to the \spd information and (red) non-converted candidates (left). Photon identification efficiency as a function of \piz rejection efficiency for the $\gamma - \piz$ separation tool for simulation (red curve), and data (blue curve) (right).
002729028 8564_ $$82245424$$s8425$$uhttp://cds.cern.ch/record/2729028/files/fig31.png$$y00042 Ratio of photon detection efficiencies $\epsilon (\gamma \to ee)/\epsilon(\gamma_{CALO})$ from the decay of \piz mesons in data (red) and simulations (blue).
002729028 8564_ $$82245425$$s30768$$uhttp://cds.cern.ch/record/2729028/files/fig16.png$$y00019 Invariant mass distribution for $\piz \to \gamma\gamma$ candidates upon which the fine calibration algorithm is applied. The red curve corresponds to the distribution before applying the method, while the blue curve is the final one. Values in the red (blue) box are the mean and sigma of the signal peak distribution in \mevcc before (after) applying the fine calibration method.
002729028 8564_ $$82245426$$s30596$$uhttp://cds.cern.ch/record/2729028/files/fig17.png$$y00020 \piz mass as a function of time in summer 2017. The red (blue) lines correspond to \hv changes from the \led system (\piz calibration).
002729028 8564_ $$82245427$$s27811$$uhttp://cds.cern.ch/record/2729028/files/fig10.png$$y00010 Distribution of the energies, expressed in \adc counts, recorded in a \presh cell with a charged track pointing to it. The result of the fit with the model discussed in the text is superimposed.
002729028 8564_ $$82245428$$s58552$$uhttp://cds.cern.ch/record/2729028/files/fig11.png$$y00011 Measurement of the MIP-calibrated energy deposit in 2011 data. The distributions in the three \presh regions are superimposed as well as the fit of a Gaussian function to each of these data distributions.
002729028 8564_ $$82245429$$s9991$$uhttp://cds.cern.ch/record/2729028/files/fig12.png$$y00012 Example of a \ecal \pmt regulation curve. The two bold vertical lines mark the working range of \ecal high voltages.
002729028 8564_ $$82245430$$s44075$$uhttp://cds.cern.ch/record/2729028/files/fig38.png$$y00051 Mass distribution of the reconstructed $\Bz\to \Kstarz(\Kp \pim)\gamma$ candidates in Run 2. The blue curve corresponds to the mass fit. The $\Kstarz\gamma$ signal component of the fit function (red line) and the various background contaminations are shown.
002729028 8564_ $$82245431$$s32660$$uhttp://cds.cern.ch/record/2729028/files/fig13a.png$$y00013 Miscalibration (black), calibration (red) and residuals (blue) of the energy flow calibration procedure for an initial mis-calibration of 10\% (left) and 2\% (right), obtained on simulated samples. The left (right) plot corresponds to the situation after the initial (final) calibration. In both cases a significant improvement of the calibration is obtained.
002729028 8564_ $$82245432$$s53599$$uhttp://cds.cern.ch/record/2729028/files/fig18a.png$$y00021 Values of \pmt gain corrections, obtained from a typical $^{137}{\rm Cs}$ calibration run (left). Relative variations in gain obtained from two measurements with the $^{137}{\rm Cs}$ source with respect to the \led measurement variation (right).
002729028 8564_ $$82245433$$s33331$$uhttp://cds.cern.ch/record/2729028/files/fig13b.png$$y00014 Miscalibration (black), calibration (red) and residuals (blue) of the energy flow calibration procedure for an initial mis-calibration of 10\% (left) and 2\% (right), obtained on simulated samples. The left (right) plot corresponds to the situation after the initial (final) calibration. In both cases a significant improvement of the calibration is obtained.
002729028 8564_ $$82245434$$s43466$$uhttp://cds.cern.ch/record/2729028/files/fig20b.png$$y00025 \pmt gain degradation as a function of the integrated anode current measured at lab (left). Integrated \pmt anode currents accumulated during 2011 (right).
002729028 8564_ $$82245435$$s223078$$uhttp://cds.cern.ch/record/2729028/files/fig18b.png$$y00022 Values of \pmt gain corrections, obtained from a typical $^{137}{\rm Cs}$ calibration run (left). Relative variations in gain obtained from two measurements with the $^{137}{\rm Cs}$ source with respect to the \led measurement variation (right).
002729028 8564_ $$82245436$$s9219$$uhttp://cds.cern.ch/record/2729028/files/fig24b.png$$y00031 Distribution of the muon energy deposition in the outer cells (left) and in the most central cells (right) of the \hcal.
002729028 8564_ $$82245437$$s9273$$uhttp://cds.cern.ch/record/2729028/files/fig36b.png$$y00049 Distribution of $E/p$ from simulations (left). Resolution $\sigma(E/p)$ as a function of energy, obtained from simulations (right).
002729028 8564_ $$82245438$$s32424$$uhttp://cds.cern.ch/record/2729028/files/fig36a.png$$y00048 Distribution of $E/p$ from simulations (left). Resolution $\sigma(E/p)$ as a function of energy, obtained from simulations (right).
002729028 8564_ $$82245439$$s118726$$uhttp://cds.cern.ch/record/2729028/files/fig5.png$$y00005 \ecal cell.
002729028 8564_ $$82245440$$s102875$$uhttp://cds.cern.ch/record/2729028/files/fig2.png$$y00001 Layout of the calorimeter system.
002729028 8564_ $$82245441$$s12255$$uhttp://cds.cern.ch/record/2729028/files/fig20a.png$$y00024 \pmt gain degradation as a function of the integrated anode current measured at lab (left). Integrated \pmt anode currents accumulated during 2011 (right).
002729028 8564_ $$82245442$$s25059$$uhttp://cds.cern.ch/record/2729028/files/fig28b.png$$y00037 Electron identification estimators (open histogram for electrons, shaded histogram for hadrons): a) energy deposited in the \presh, b) value of the $\chi^2_{\rm 2D}$ estimator in \ecal, c) energy deposited in the \hcal. Data taken in 2011.
002729028 8564_ $$82245443$$s21571$$uhttp://cds.cern.ch/record/2729028/files/fig28c.png$$y00038 Electron identification estimators (open histogram for electrons, shaded histogram for hadrons): a) energy deposited in the \presh, b) value of the $\chi^2_{\rm 2D}$ estimator in \ecal, c) energy deposited in the \hcal. Data taken in 2011.
002729028 8564_ $$82245444$$s20546$$uhttp://cds.cern.ch/record/2729028/files/fig28a.png$$y00036 Electron identification estimators (open histogram for electrons, shaded histogram for hadrons): a) energy deposited in the \presh, b) value of the $\chi^2_{\rm 2D}$ estimator in \ecal, c) energy deposited in the \hcal. Data taken in 2011.
002729028 960__ $$a11
002729028 980__ $$aPREPRINT
002729028 980__ $$aLHCb_DP