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LHCb Preprints

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2025-02-26
11:23
Observation of a new charmed baryon decaying to $\Xi_c^+ \pi^+ \pi^-$ / LHCb Collaboration
The $\Xi^+_c\pi^-\pi^+$ spectrum is investigated using proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb$^{-1}$, collected by the LHCb experiment during 2016-2018. [...]
arXiv:2502.18987 ; LHCb-PAPER-2024-055 ; CERN-EP-2025-019 ; LHCB-PAPER-2024-055. - 2025 - 22.
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2025-02-17
10:35
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$^{-1}$. [...]
arXiv:2502.10291 ; LHCb-PAPER-2024-022 ; CERN-EP-2025-001. - 2025 - 61.
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2025-02-10
10:32
Measurement of the multiplicity dependence of $\mitΥ$ production ratios in $pp$ collisions at $\sqrt{s}=13$ TeV / LHCb Collaboration
The $\mit{\Upsilon}(\mathrm{2}S)$ and $\mit{\Upsilon}(\mathrm{3}S)$ production cross-sections are measured relative to that of the $\mit{\Upsilon}(\mathrm{1}S)$ meson, as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy of $13$ TeV. [...]
arXiv:2501.12611 ; LHCb-PAPER-2024-038 ; CERN-EP-2024-318 ; LHCB-PAPER-2024-038. - 2025 - 25.
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2025-02-06
13:46
Search for resonance-enhanced $CP$ and angular asymmetries in the $\Lambda^+_c\to p\mu^+\mu^-$ decay at LHCb / LHCb Collaboration
The first measurement of the $CP$ asymmetry of the decay rate ($A_{CP}$) and the $CP$ average ($\Sigma A_{\text{FB}}$) and $CP$ asymmetry ($\Delta A_{\text{FB}}$) of the forward-backward asymmetry in the muon system of $\mathit{\Lambda}^+_c\to p\mu^+\mu^-$ decays is reported. [...]
arXiv:2502.04013 ; LHCb-PAPER-2024-051 ; CERN-EP-2024-340 ; LHCB-PAPER-2024-051. - 2025 - 23.
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2025-01-28
14:01
Evidence for $B^-\rightarrow D^{**0}\tau^-\overline{\nu}_{\tau}$ decays / LHCb Collaboration
The first evidence for the decay $B^-\rightarrow D^{**0}\tau^-\overline{\nu}_{\tau}$ is obtained using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb$^{-1}$ , at centre-of-mass energies of 7, 8 and 13 Tev. [...]
arXiv:2501.14943 ; LHCb-PAPER-2024-037 ; CERN-EP-2024-341 ; LHCB-PAPER-2024-037. - 2025 - 25.
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2025-01-27
11:40
Precision EWK and QCD measurements from ATLAS, CMS, LHCb / Guglielmi, Valentina (DESY) /ATLAS, CMS and LHCB Collaborations
These proceedings present a compilation of selected recent precise standard model (SM) measurements, including findings by ATLAS, CMS, LHCb. Covered topics include studies of quantum chromodynamics (QCD), such as the latest determinations of the strong coupling $\as$, as well as the illustration of its running. [...]
CMS-CR-2024-347.- Geneva : CERN, 2024 - 10 p. Fulltext: PDF;
In : 43rd International Symposium on Physics in Collision, Athens, Gr, 22 - 25 Oct 2024

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2025-01-22
15:03
Observation of the $\Lambda_{b}^{0} \to J/\psi\Xi^{-} K^+$ and $\Xi_{b}^{0} \to J/\psi\Xi^{-} \pi^+$ decays / LHCb Collaboration
The first observation of the $\Xi_b^0 \to J/\psi \Xi^- \pi^+$ decay and the most precise measurement of the branching fraction of the $\Lambda_b^0 \to J/\psi \Xi^- K^+$ decay are reported, using proton-proton collision data from the LHCb experiment collected in 2016--2018 at a centre-of-mass energy of 13~TeV, corresponding to an integrated luminosity of 5.4~fb$^{-1}$. [...]
arXiv:2501.12779 ; CERN-EP-2024-337 ; LHCb-PAPER-2024-049 ; LHCB-PAPER-2024-049. - 2025 - 22.
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2025-01-22
11:44
Search for charge-parity violation in semileptonically tagged $D^{0} \to K^{+} \pi^{-}$ decays / LHCb Collaboration
An analysis of the flavour oscillations of the charmed neutral meson is presented. [...]
arXiv:2501.11635 ; LHCb-PAPER-2024-044 ; CERN-EP-2024-319 ; LHCB-PAPER-2024-044. - 2025 - 29.
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2025-01-20
09:48
Searches for long-lived particles at the LHC / Benato, Lisa (Vienna, OAW) /ATLAS, CMS and LHCB Collaborations
Recent results of searches for long-lived particles at the LHC experiments are presented. The focus of this report is on long decay lengths, beyond 1 m. [...]
CMS-CR-2024-353.- Geneva : CERN, 2024 - 9 p. Fulltext: PDF;
In : 35th Rencontres de Blois Particle Physics and Cosmology, Blois, Fr, 20 - 25 Oct 2024

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2025-01-14
10:32
Study of light-meson resonances decaying to $K^0_{\rm S} K \pi$ in the $B \to (K^0_{\rm S} K \pi) K$ channels / LHCb Collaboration
A study is presented of $B^+ \to K^0_{\rm S} K^- \pi^+ K^-$ and $B^+ \to K^0_{\rm S} K^+ \pi^- K^+$ decays based on the analysis of proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of $9 fb^{-1}$. [...]
arXiv:2501.06483 ; LHCb-PAPER-2024-045 ; CERN-EP-2024-329 ; LHCB-PAPER-2024-045. - 2025 - 46.
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