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CERN Document Server 91 registres trobats  1 - 10següentfinal  anar al registre: La cerca s'ha fet en 0.85 segons. 
1.
Guidelines for FPGA Gateware Development in LHCb / Perro, Alberto (Universite d'Aix-Marseille III (FR)) ; Vodnik, Mitja (CERN) ; Durante, Paolo (CERN) ; Vouters, Guillaume (Centre National de la Recherche Scientifique (FR)) ; Alessio, Federico (CERN)
This technical note outlines best practices and methodologies for FPGA develop- ment, with a focus on coding standards, verification techniques, and reusable design components tailored for LHCb gateware community. It introduces coding guidelines to ensure consistency, readability, and maintainability in FPGA designs, followed by an exploration of simulation methods and formal verification techniques to guarantee functional correctness and comprehensive coverage. [...]
LHCb-PUB-2025-009; CERN-LHCb-PUB-2025-009.- Geneva : CERN, 2025 - 21. Fulltext: PDF;
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2.
Angular analysis of $B^0 \to K^{*0} e^+e^-$ decays / LHCb Collaboration
An angular analysis of $B^0\rightarrow K^{*0}e^{+}e^{-}$ decays is presented using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb$^{-1}$. The analysis is performed in the region of the dilepton invariant mass squared of 1.1-6.0 GeV$^{2}/c^{4}$. [...]
arXiv:2502.10291; LHCb-PAPER-2024-022; CERN-EP-2025-001.- Geneva : CERN, 2025-06-13 - 61 p. - Published in : JHEP 2506 (2025) 140 Fulltext: 2502.10291v1 - PDF; 2502.10291 - PDF; document - PDF; LHCb-PAPER-2024-022-figures-JHEP - ZIP;
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3.
Measurement of CP asymmetry in $ {\textrm{B}}_{\textrm{s}}^0\to {\textrm{D}}_{\textrm{s}}^{\mp }{\textrm{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 $13 \,\mathrm{TeV}$. The measured parameters are obtained with a decay-time dependent analysis yielding $C_f = 0.791 \pm 0.061 \pm 0.022$, $A_f^{ΔΓ} = -0.051 \pm 0.134 \pm 0.058$, $A_{\overline{f}}^{ΔΓ} = -0.303 \pm 0.125 \pm 0.055$, $S_f = -0.571 \pm 0.084 \pm 0.023$ and $S_{\overline{f}} = -0.503 \pm 0.084 \pm 0.025$, where the first uncertainty is statistical and the second systematic. [...]
arXiv:2412.14074; LHCb-PAPER-2024-020; CERN-EP-2024-219.- 2025-03-19 - 34 p. - Published in : JHEP 2503 (2025) 139 Fulltext: 2412.14074 - PDF; document - PDF; Additional material - ZIP; Figures - ZIP; Supplementary material - PDF;
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4.
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. The results of the $CP$ asymmetry difference and branching fraction ratio are \begin{align*} \Delta\mathcal{A}^{C\!P} &\equiv \mathcal{A}^{C\!P}({B}^+ \to {J}\mskip -3mu/\mskip -2mu\psi\,\pi^+) - \mathcal{A}^{C\!P}({B}^+ \to {J}\mskip -3mu/\mskip -2mu\psi\,K^+) = (1.29 \pm 0.49 \pm 0.08) \times 10^{-2}, \end{align*} \begin{equation*} \mathcal{R}_{\pi/K} \equiv \frac{\mathcal{B}(B^+ \!\to J\mskip -3mu/\mskip -2mu\psi\,\pi^+)} {\mathcal{B}(B^+ \!\to J\mskip -3mu/\mskip -2mu\psi\,K^+)} = (3.852 \pm 0.022 \pm 0.018) \times 10^{-2}. [...]
arXiv:2411.12178; LHCb-PAPER-2024-031; CERN-EP-2024-286.- Geneva : CERN, 2025-03-12 - 20 p. - Published in : Phys. Rev. Lett. 134 (2025) 101801 Fulltext: paper_2024_B2JpsiPi - PDF; 2411.12178 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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5.
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 $13\,{\rm TeV}$. The analysis is performed in the very low dielectron invariant mass-squared region between $0.0009$ and $0.2615\,{\rm GeV}^2\!/c^4$. [...]
arXiv:2411.10219; LHCb-PAPER-2024-030; CERN-EP-2024-276.- Geneva : CERN, 2025-03-07 - 22 p. - Published in : JHEP 2503 (2025) 047 Fulltext: LHCb-PAPER-2024-030_Arxiv - PDF; 2411.10219 - PDF; document - PDF; LHCb-LHCb-PAPER-2024-030-figures - ZIP; Related data file(s): ZIP; Supplementary information: ZIP;
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6.
Measurement of the CKM angle $\gamma$ in $B^\pm\to DK(892)^{*\pm}$ decays / LHCb Collaboration
Measurements of $CP$ observables and the CKM angle $\gamma$ are performed in $B^{\pm} \to D K^*(892)^{\pm}$ decays, where $D$ represents a superposition of $D^0$ and $\overline{D}{}^0$ states, using the LHCb dataset collected during Run 1 (2011-2012) and Run 2 (2015-2018). A comprehensive study of this channel is presented with the $D$ meson reconstructed in two-body final states $K^{\pm}\pi^{\mp}$, $K^+K^-$ and $\pi^+\pi^-$; four-body final states $K^{\pm}\pi^{\mp}\pi^{\pm}\pi^{\mp}$ and $\pi^+\pi^-\pi^+\pi^-$; and three-body final states $K^0_{S} \pi^+\pi^-$ and $K^0_{S} K^+ K^-$. [...]
arXiv:2410.21115; LHCb-PAPER-2024-023; CERN-EP-2024-260.- Geneva : CERN, 2025-02-18 - 38 p. - Published in : JHEP 2502 (2025) 113 Fulltext: LHCb-PAPER-2024-023_arXiv - PDF; 2410.21115 - PDF; document - PDF; Related data file(s): ZIP;
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7.
Measurements of $\psi(2S)$ and $\chi_{c1}(3872)$ within fully reconstructed jets / LHCb Collaboration
This paper presents the first measurement of $\psi{(2S)}$ and $\chi_{c1}(3872)$ meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the $J/\psi$($\rightarrow\mu^+\mu^-$)$\pi^+\pi^-$ final state in the forward region using proton-proton collision data collected by the LHCb experiment at the center-of-mass-energy of $13\text{TeV}$ in 2016, corresponding to an integrated luminosity of $1.64\text{fb}^{-1}$. [...]
arXiv:2410.18018; LHCb-PAPER-2024-021; CERN-EP-2024-241.- Geneva : CERN, 2025-05-22 - 35 p. - Published in : Eur. Phys. J. C 85 (2025) 562 Fulltext: LHCb-PAPER-2024-021 - PDF; 2410.18018 - PDF; document - PDF; Related data file(s): ZIP;
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8.
Test of lepton universality with $B_s^0 \rightarrow \phi \ell^+\ell^-$ decays / LHCb Collaboration
Lepton flavour universality in rare $b\rightarrow s$ transitions is tested for the first time using $B_s^0$ meson decays. The measurements are performed using $pp$ collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of 9$\,{\rm fb}^{-1}$. [...]
arXiv:2410.13748; LHCb-PAPER-2024-032; CERN-EP-2024-255; LHCB-PAPER-2024-032.- Geneva : CERN, 2025-03-27 - 24 p. - Published in : Phys. Rev. Lett. 134 (2025) 121803 Fulltext: LHCb-PAPER-2024-032-arXiv - PDF; 2410.13748 - PDF; LHCb-PAPER-2024-032-supplementary - PDF; LHCb-PAPER-2024-032-appendix - PDF; Related data file(s): ZIP;
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9.
Measurement of the effective leptonic weak mixing angle / LHCb Collaboration
Using $pp$ collision data at $\sqrt{s}=13$~TeV, recorded by the LHCb experiment between 2016 and 2018 and corresponding to an integrated luminosity of $5.4$~fb$^{-1}$, the forward-backward asymmetry in the $pp \to Z/\gamma^{*} \to \mu^+\mu^-$ process is measured. The measurement is carried out in ten intervals of the difference between the muon pseudorapidities, within a fiducial region covering dimuon masses between $66$ and $116$ GeV, muon pseudorapidities between $2.0$ and $4.5$ and muon transverse momenta above $20$ GeV. [...]
arXiv:2410.02502; LHCb-PAPER-2024-028; CERN-EP-2024-230.- Geneva : CERN, 2024-12-03 - 28 p. - Published in : JHEP 2412 (2024) 026 Fulltext: LHCb-PAPER-2024-028 - PDF; 2410.02502 - PDF; document - PDF; Related data file(s): ZIP; Supplementary information: LHCb-PAPER-2024-028-supplementary - ZIP; supplementary (3) - PDF;
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10.
Search for $B_{(s)}^{*0}\to \mu^+\mu^-$ in $B_c^+ \to \pi^+ \mu^+\mu^-$ decays / LHCb Collaboration
A search for the very rare $B^{*0}\to\mu^+\mu^-$ and $B_{s}^{*0}\to\mu^+\mu^-$ decays is conducted by analysing the $B_c^+\to \pi^+\mu^+\mu^-$ process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 $\text{fb}^{-1}$ [...]
arXiv:2409.17209; CERN-EP-2024-220; LHCb-PAPER-2024-026.- Geneva : CERN, 2025-01-13 - 16 p. - Published in : Eur. Phys. J. C 85 (2025) 20 Figures: ZIP; Fulltext: 2409.17209v1 - PDF; 2409.17209 - PDF; document - PDF;
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14 Vouters, G
67 Vouters, Guillaume
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