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Measurement of CP asymmetry in $B^0_s \to D^{\mp}_s K^{\pm}$ decays / LHCb Collaboration
A measurement of the

$CP$ -violating parameters in

$B_s^0 \to D_s^{\mp} K^{\pm}$ decays is reported, based on the analysis of proton-proton collision data collected by the LHCb experiment corresponding to an integrated luminosity of

$6\,\mathrm{fb}^{-1}$ at a centre-of-mass energy of

$13 \,\mathrm{TeV}$ . [...]
arXiv:2412.14074 ; LHCb-PAPER-2024-020 ; CERN-EP-2024-219. - 34.
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Measurement of $C\!P$ asymmetries in $\Lambda_b^0\to ph^-$ decays / LHCb Collaboration
A search for

$CP$ violation in

$\Lambda_b^0\rightarrow pK^-$ and

$\Lambda_b^0\rightarrow p\pi^-$ decays is presented using the full Run 1 and Run 2 data samples of

$pp$ collisions collected with the LHCb detector, corresponding to an integrated luminosity of 9

$\mathrm{fb}^{-1}$ at center-of-mass energies of 7, 8, and 13 TeV. [...]
arXiv:2412.13958 ; LHCb-PAPER-2024-048 ; CERN-EP-2024-330 ; LHCB-PAPER-2024-048. - 2024 - 24.
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Quantum Machine Learning at LHCb

Reference: Poster-2024-1222
Created: 2021. -1 p
Creator(s): Nicotra, Davide

Quantum Machine Learning (QML) provides new opportunities for data analysis in high-energy physics. This study investigates the use of QML techniques for b-jet charge tagging at LHCb, focusing on a Variational Quantum Classifier algorithm. By utilising quantum entanglement and correlations among jet particles, the quantum approach aims to improve tagging performance compared to traditional methods. A dataset of b-jets at a center-of-mass energy of 13 TeV was used. Quantum models were compared against a Deep Neural Network (DNN) and conventional muon-based technique (muon-tag). The results show that quantum models perform competitively on reduced datasets, demonstrating their potential for computationally constrained tasks. This work represents an important step in combining quantum computing with machine learning for particle physics, opening pathways for future studies on forward-central b-jet asymmetry and related applications.

© CERN Geneva

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Test of lepton flavour universality with $B^+ \to K^+\pi^+\pi^-\ell^+\ell^-$ decays / LHCb Collaboration
The first test of lepton flavour universality between muons and electrons using

$B^+ \to K^+\pi^+\pi^-\ell^+\ell^-$ (

$\ell=e,\mu$ ) decays is presented. [...]
arXiv:2412.11645 ; LHCb-PAPER-2024-046 ; CERN-EP-2024-312 ; LHCB-PAPER-2024-046. - 2024 - 20.
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Search for $D^0$ meson decays to $\pi^+ \pi^- e^+ e^-$ and $K^+ K^- e^+ e^-$ final states / LHCb Collaboration
A search for

$D^0$ meson decays to the

$\pi^+\pi^-e^+e^-$ and

$K^+K^-e^+e^-$ final states is reported using a sample of proton-proton collisions collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb

$^{-1}$ . [...]
arXiv:2412.09414 ; LHCb-PAPER-2024-047 ; CERN-EP-2024-307 ; LHCB-PAPER-2024-047. - 2024 - 21.
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Observation of the open-charm tetraquark state $T_{cs 0}^{*}(2870)^0$ in the $B^- \rightarrow D^- D^0 K_\mathrm{S}^0$ decay / LHCb Collaboration
An amplitude analysis of

$B^-\rightarrow D^- D^0 K_\mathrm{S}^0$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 9 fb

$^{-1}$ , collected with the LHCb detector at center-of-mass energies of 7, 8, and 13

$\mathrm{\,Te\kern -0.1em V}$ . [...]
arXiv:2411.19781 ; LHCb-PAPER-2024-040 ; CERN-EP-2024-287 ; LHCB-PAPER-2024-040. - 2024 - 21.
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Study of $\it{\Lambda}_{\it{b}}^\rm{0}$ and $\it{\Xi}_{\it{b}}^\rm{0}$ decays to $\it{\Lambda} h^+h^{'-}$ and evidence for $CP$ violation in $\it{\Lambda}_{\it{b}}^\rm{0}\to\it{\Lambda} K^+K^-$ decays / LHCb Collaboration
A study of Λ 0 b and Ξ0 b decays to Λh+h ′− (h (′) = π, K) is performed using pp collision data collected by the LHCb experiment during LHC Runs 1–2, corresponding to an integrated luminosity of 9 fb−1 . [...]
arXiv:2411.15441 ; LHCb-PAPER-2024-043 ; CERN-EP-2024-281. - 26.
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Measurement of $\phi(1020)$ meson production in fixed-target $\textit{p}$ Ne collisions at~ $\sqrt{s_{NN}}$ ~=~68.5 GeV. / LHCb Collaboration
The first measurement of

$\phi(1020)$ meson production in fixed-target

$p$ Ne collisions at

$\sqrt{s_{NN}}=68.5$ GeV is presented. [...]
arXiv:2411.09343 ; LHCb-PAPER-2024-036 ; CERN-EP-2024-274 ; LHCB-PAPER-2024-036. - 2024 - 20.
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First evidence for direct $CP$ violation in beauty to charmonium decays / LHCb Collaboration
The

$CP$ asymmetry and branching fraction of the CKM-suppressed decay

$B^+ \to J\psi \pi^+$ are precisely measured relative to the favoured decay

$B^+ \to J\psi K^+$ , using a sample of proton-proton collision data corresponding to an integrated luminosity of

$5.4 \ \text{fb}^{-1}$ recorded at center-of-mass energy of

$13\ \text{TeV}$ during 2016-2018. [...]
arXiv:2411.12178 ; LHCb-PAPER-2024-031 CERN-EP-2024-286 ; LHCb-PAPER-2024-031 ; CERN-EP-2024-286 ; LHCB-PAPER-2024-031. - 2024 - 20.
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10.

Constraints on the photon polarisation in $b \to s \gamma$ transitions using $B_s^0\to \phi e^+ e^-$ decays / LHCb Collaboration
An angular analysis of the

$B_s^0 \rightarrow \phi e^+e^-$ decay is performed using the proton-proton collision dataset collected between 2011 and 2018 by the LHCb experiment, corresponding to an integrated luminosity of

$9\,{\rm fb}^{-1}$ at centre-of-mass energies of 7, 8 and

$13\,{\rm TeV}$ . [...]
arXiv:2411.10219 ; LHCb-PAPER-2024-030 ; CERN-EP-2024-276 ; LHCB-PAPER-2024-030. - 2024 - 21.
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See also: similar author names
25	Nicotra, D.
127	Nicotra, Davide

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