Search Results - "Aaij, Roel"
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Selection and processing of calibration samples to measure the particle identification performance of the LHCb experiment in Run 2
Published in EPJ techniques and instrumentation (28-02-2019)“…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…”
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Journal Article -
2
Scalable monitoring data processing for the LHCb software trigger
Published in EPJ Web of Conferences (2020)“…The LHCb High Level Trigger (HLT) is split in two stages. HLT1 is synchronous with collisions delivered by the LHC and writes its output to a local disk…”
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Journal Article Conference Proceeding -
3
Evolution of the energy efficiency of LHCb’s real-time processing
Published in EPJ Web of Conferences (2021)“…The upgraded LHCb detector, due to start datataking in 2022, will have to process an average data rate of 4 TB/s in real time. Because LHCb’s physics…”
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Journal Article Conference Proceeding -
4
Allen: A High-Level Trigger on GPUs for LHCb
Published in Computing and software for big science (2020)“…We describe a fully GPU-based implementation of the first level trigger for the upgrade of the LHCb detector, due to start data taking in 2021. We demonstrate…”
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Journal Article -
5
Observation of a New Excited $D^+_s$ Meson in $B^0 \rightarrow D^- D^+ K^+ \pi^-$ Decays
Published in Physical review letters (2021)“…Using pp collision data corresponding to an integrated luminosity of 5.4 fb-1 collected with the LHCb detector at a center-of-mass energy of 13 TeV, the…”
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Journal Article -
6
Measurement of $CP$-Averaged Observables in the $B^{0}\rightarrow K^{0}\mu^{+}\mu^{-}$ Decay
Published in Physical review letters (2020)“…An angular analysis of the B0→K*0(→K+π-)μ+μ- decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb-1 of pp collision data…”
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Journal Article -
7
Constraints on the $K^0_S \rightarrow \mu^+ \mu^-$ Branching Fraction
Published in Physical review letters (2020)“…A search for the decay KS0→μ+μ- is performed using proton-proton collision data, corresponding to an integrated luminosity of 5.6 fb-1 and collected with the…”
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Journal Article -
8
Search for the Rare Decays $B^0_s\to e^+e^-$ and $B^0\to e^+e^-
Published in Physical review letters (2020)“…A search for the decays Bs0→e+e- and B0→e+e- is performed using data collected with the LHCb experiment in proton-proton collisions at center-of-mass energies…”
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Journal Article -
9
Search for $CP$ violation in $D_s^+\to K_S^0 \pi^+$, $D^+\to K_S^0 K^+$ and $D^+\to \phi \pi^+$ decays
Published in Physical review letters (2019)“…A search for charge-parity (CP) violation in Cabibbo-suppressed Ds+→KS0π+, D+→KS0K+, and D+→ϕπ+ decays is reported using proton-proton collision data,…”
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Journal Article -
10
Measurement of the ratio of branching fractions of the decays $\Lambda^0_b\to\psi(2S) \Lambda$ and $\Lambda^0_b\!\to J/\psi \Lambda
Published in The journal of high energy physics (2019)“…Using pp collisions corresponding to 3 fb$^{−1}$ integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, the ratio of…”
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Journal Article -
11
Measurement of the CKM angle $\gamma$ using $B^\pm\to DK^\pm$ with $D\to K_\text{S}^0\pi^+\pi^-$, $K_\text{S}^0K^+K^-$ decays
Published in The journal of high energy physics (2018)“…A binned Dalitz plot analysis of B$^{±}$ → DK$^{±}$ decays, with D → K$_{S}^{0}$ π$^{+}$π$^{−}$ and D → K$_{S}^{0}$ K$^{+}$K$^{−}$, is used to perform a…”
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Journal Article -
12
Search for excited $B_{c}^{+}$ states
Published in The journal of high energy physics (2018)“…A search is performed in the invariant mass spectrum of the B$_{c}^{+}$ π$^{+}$π$^{−}$ system for the excited B$_{c}^{+}$ states B$_{c}$ (2$^{1}$S$_{0}$)$^{+}$…”
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Journal Article -
13
Search for Baryon-Number Violating ${\mathrm{\Xi}}_{b}^{0}$ Oscillations
Published in Physical review letters (2017)“…A search for baryon-number violating Ξb0 oscillations is performed with a sample of pp collision data recorded by the LHCb experiment, corresponding to an…”
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Journal Article -
14
Study of prompt D$^{0}$ meson production in $p$Pb collisions at $ \sqrt{s_{\mathrm{NN}}}=5 $ TeV
Published in The journal of high energy physics (2017)“…Production of prompt D$^{0}$ mesons is studied in proton-lead and lead-proton collisions recorded at the LHCb detector at the LHC. The data sample corresponds…”
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Journal Article -
15
Measurement of the $\Upsilon$ polarizations in $pp$ collisions at $\sqrt{s}=7$ and 8 TeV
Published in The journal of high energy physics (2017)“…The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies $ \sqrt{s}=7 $ and 8 TeV, is measured using data…”
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Journal Article -
16
Evolution of the energy efficiency of LHCb's real-time processing
Published 14-06-2021“…The upgraded LHCb detector, due to start datataking in 2022, will have to process an average data rate of 4~TB/s in real time. Because LHCb's physics…”
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Journal Article -
17
Selection and processing of calibration samples to measure the particle identification performance of the LHCb experiment in Run 2
Published 02-03-2018“…EPJ Techniques and Instrumentation 2019 6:1 Since 2015, with the restart of the LHC for its second run of data taking, the LHCb experiment has been empowered…”
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Journal Article