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LHCb Figures

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2020-01-07
08:41
Throughput scaling of the Hlt1 track reconstruction on many CPU core machines /LHCb Collaboration
The Hlt1 throughput scaling on CPUs with up to 64 physical cores is shown. We demonstrate that the Hlt1 software exhibits an almost linear scaling up to the number of physical cores..
LHCB-FIGURE-2020-001.- Geneva : CERN, 2020 - 5. Fulltext: lhcb-figure-2020-001 - PDF; lhcb-figure-2020-001_figs - TAR.GZ;

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2019-12-09
16:58
Upgrade simulations of VELO and SciFi saturations in PbPb collisions at $\sqrt{s_{NN}}$ = 5 TeV /LHCb Collaboration
This document presents performance plots from private simulation samples based on upgrade settings. It aims to show the saturation of the detector with occupancy [...]
LHCB-FIGURE-2019-021.- Geneva : CERN, 13 - 3. Fulltext: PDF;

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2019-11-06
12:16
Publicity plots approval: Charm production in PbPb collisions at $\sqrt{s_{NN}}$ = 5 TeV and in $p$Pb collisions at $\sqrt{s_{NN}}$= 8 TeV /LHCb Collaboration
This document presents performance plots for the full PbPb dataset at $\sqrt{s_{\rm NN}}$ = 5 TeV recorded in 2018 by the LHCb Collaboration as well as new performance plots in $p$Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16 TeV. For the first dataset, a fit of the open-charm mesons $D$, $D^+_s$, $D^+$, the charm baryon $\Lambda^+_c$ and the charmonium $J/\psi$ are shown [...]
LHCB-FIGURE-2019-020.- Geneva : CERN, 2019 - 8. Fulltext: PDF;

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2019-10-31
09:30
$\mathcal{Xc1} (3872)$ production in $p\rm{Pb}$ and $\rm{Pb}$$p$ collisions at $\sqrt{sNN}$ = 8.16 TeV /LHCb Collaboration
This document shows performance plots of the $J/\psi\pi^{+}\pi^{-}$ invariant mass spectra from $p$Pb and Pb$p$ collisions at $\sqrt{s_{NN}}$ = 8.16 TeV, to be shown at the conference Quark Matter 2019. Once combined with appropriate efficiency corrections, this data can be used to place limits on the nuclear modification factor of the exotic $\chi_{c1}$(3872) state [...]
LHCB-FIGURE-2019-019.- Geneva : CERN, 31 - 4. Fulltext: PDF;

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2019-10-28
16:32
LHCb CPU Usage Forecast /LHCb Collaboration
We present the estimated CPU Forecast of the LHCb experiment through 2025. This estimate takes the available CPU usage as input and estimates the user, simulation and stripping CPU usage [...]
LHCB-FIGURE-2019-018.- Geneva : CERN, 28 - 5. Fulltext: PDF;

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2019-10-25
10:48
Performance of the Lamarr Prototype: the ultra-fast simulation option integrated in the LHCb simulation framework /LHCb Collaboration
We present performance plots of the Lamarr Prototype. Lamarr is the ultra-fast simulation option being developed for LHCb [...]
LHCB-FIGURE-2019-017.- Geneva : CERN, 25 - 7. Fulltext: PDF;

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2019-10-25
10:45
First integration tests of the GPU HLT1 (Allen) /LHCb Collaboration
We present an integration test of the GPU implementation of LHCb’s first level High Level Trigger (Allen)..
LHCB-FIGURE-2019-016.- Geneva : CERN, 2019 - 7. Fulltext: PDF;

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2019-10-23
15:14
2018 Alignment stability plots /LHCb Collaboration
In Run 2, a new scheme for the software trigger at LHCb allowed splitting the triggering of events in two stages, giving room to perform the detector alignment and calibration in real time. In the detector alignment and calibration strategy for Run 2, data collected at the start of the fill are processed in a few minutes and used to update the alignment constants, while the calibration constants are evaluated for each run. [...]
LHCB-FIGURE-2019-015.- Geneva : CERN, 23 - 8. Fulltext: PDF;

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2019-10-22
11:19
Comparison of the decay time resolution in Run 1 and Run 2 /LHCb Collaboration
In this document, the $B_s^0$ decay time resolution in the decay $B_s^0 \to J/\psi \phi$ at the LHCb experiment is presented. The time resolution is evaluated as a function of the $B_s^0$ momentum and estimated decay time error. [...]
LHCB-FIGURE-2019-014.- Geneva : CERN, 2019 - 4. Fulltext: PDF;

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2019-10-17
16:26
Speedup with ISPC and GPU on Compass Allen algorithm /LHCb Collaboration
We present the achieved speedup with the ISPC compiler and the SPMD paradigm for the Compass algorithm used in Allen. The speedup achieved with GPUs is shown for comparison..
LHCB-FIGURE-2019-013.- Geneva : CERN, 13 - 2. Fulltext: PDF;

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