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Search for resonances decaying to photon pairs with masses between 4.9 and 19.4 GeV / LHCb Collaboration
A search is presented for axion-like particles (ALPs) with masses between 4.9 and 19.4 GeV decaying to a pair of photons, using proton-proton collisions collected with the LHCb detector during 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 2.1 fb$^{-1}$. [...]
arXiv:2507.14390 ; CERN-EP-2025-133 ; LHCb-PAPER-2025-012 ; LHCB-PAPER-2025-012. - 2025 - 21.
Full text - Related data file(s) - Full text - Fulltext

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Measurement of the branching fraction ratio $R_K$ at large dilepton invariant mass / LHCb Collaboration
A test of lepton universality between muons and electrons is performed using $B^+ \rightarrow K^+\ell^+\ell^-$ decays (where $\ell = e$, $\mu$), in the dilepton invariant-mass-squared region above 14.3 GeV$^2/c^4$. [...]
arXiv:2505.03483 ; LHCb-PAPER-2024-056 ; CERN-EP-2025-069. - 2025 - 37.
Fulltext - Related data file(s) - Fulltext - Full text

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Angular analysis of the decay $B_s^0 \to \phi e^+e^-$ / LHCb Collaboration
An angular analysis of the decay $B^0_s\to\phi e^+e^-$ is presented, using proton-proton collision data collected with the LHCb detector between 2011 and 2018 at centre-of-mass energies of 7, 8 and 13$\,\mathrm{Te\kern -0.1em V}$. The combined dataset corresponds to an integrated luminosity of $9\,\mathrm{fb}^{-1}$. [...]
arXiv:2504.06346; LHCb-PAPER-2025-006; CERN-EP-2025-064; LHCB-PAPER-2025-006.- Geneva : CERN, 2025-07-03 - 29 p. - Published in : JHEP 2507 (2025) 069 Fulltext: LHCb-PAPER-2025-006-arXiv - PDF; 2504.06346 - PDF; document - PDF; Related data file(s): ZIP;

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Searches for Lepton Flavor Universality Violation at CMS / Chistov, R (Moscow, MIPT ; Lebedev Inst.) /CMS Collaboration
In this talk recent new results from CMS on the search for New Physics effects in heavy flavor decays are presented. Particularly, lepton flavor unification violation was searched for by measuring $R(K)$ and $R(J/\psi)$ ratios. [...]
2025 - 3 p. - Published in : Moscow Univ. Phys. Bull.: 79 (2024) , no. Suppl 1, pp. 56-58
Fulltext: PDF;
In : 21st Lomonosov Conference on Elementary Particle Physics, Moscow, Russia, 24 - 30 Aug 2023, pp.56-58

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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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Discovery potential of LHCb Upgrade II / LHCb Collaboration, CERN
A second major upgrade of the LHCb detector is necessary to allow full exploitation of the HL-LHC for flavour physics. The new detector will be installed during long shutdown 4 (LS4), and will operate at instantaneous luminosity up to $1.5 \times 10^{34}\,{\rm cm}^{-2}{\rm s}^{-1}$. [...]
LHCb-PUB-2025-001; CERN-LHCb-PUB-2025-001.- Geneva : CERN, 2025 Fulltext: PDF;

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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. The measurement is performed with data from proton-proton collisions collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of $9~\mathrm{fb}^{-1}$. [...]
arXiv:2412.11645; LHCb-PAPER-2024-046; CERN-EP-2024-312; LHCB-PAPER-2024-046.- Geneva : CERN, 2025-05-09 - 13 p. - Published in : Phys. Rev. Lett. 134 (2025) 181803 Fulltext: LHCb-PAPER-2024-046 - PDF; 2412.11645 - PDF; publication - PDF; Related data file(s): ZIP; External link: Supplementary information

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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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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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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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