Calibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC

Abstract

The 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.

arXiv commentAll 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)

References in corpus (14)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• LHCb Detector Performance
• sPlot: a statistical tool to unfold data distributions
• TMVA - Toolkit for Multivariate Data Analysis
• The LHCb Trigger and its Performance in 2011
• Averages of b-hadron, c-hadron, and tau-lepton Properties
• Selection and processing of calibration samples to measure the particle identification performance of the LHCb experiment in Run 2
• Tesla : an application for real-time data analysis in High Energy Physics
• Towards $B\to V\gamma$ Decays at NNLO in SCET
• Measurement of the ratio of branching fractions BR(B0 -> K*0 gamma)/BR(Bs0 -> phi gamma) and the direct CP asymmetry in B0 -> K*0 gamma
• Measurement of the relative rate of prompt ${\chi }_{c0}$, ${\chi }_{c1}$ and ${\chi }_{c2}$ production at $\sqrt{s}=7$TeV
• Evidence for the decay $B^0\to J/\psi \omega$ and measurement of the relative branching fractions of $B_s^0$ meson decays to $J/\psi \eta$ and $J/\psi {\eta }^{{}^{\prime }}$
• First observation of $B_s^0\to J/\psi \eta$ and $B_s^0\to J/\psi {\eta }^{\prime }$

Cited by in corpus (10)

• Study of $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays
• Search for the doubly charmed baryon ${\Xi }_{cc}^{+}$ in the ${\Xi }_c^{+}{\pi }^{-}{\pi }^{+}$ final state
• Performance of a spaghetti calorimeter prototype with tungsten absorber and garnet crystal fibres
• Study of charmonium and charmonium-like contributions in $B^{+}\to J/\psi \eta K^{+}$ decays
• Search for $CP$ violation in $D_{(s)}^{+}\to h^{+}{\pi }^0$ and $D_{(s)}^{+}\to h^{+}\eta$ decays
• Measurement of the prompt-production cross-section ratio $\sigma ({\chi }_{c2})/\sigma ({\chi }_{c1})$ in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV
• New simulation software technologies at the LHCb Experiment at CERN
• Lepton universality violation from neutral pion decays in $R_{K^{(\ast )}}$ measurements
• Observation of the $B^0\to {\overline{D}}^{\ast 0}{K}^{+}{\pi }^{-}$ and $B_s^0\to {\overline{D}}^{\ast 0}{K}^{-}{\pi }^{+}$ decays
• Measurement of ${\tau }_L$ using the $B_s^0\to J/\psi \eta$ decay mode