2025-04-30
10:10 |
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2025-04-10
15:16 |
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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2025-03-25
16:29 |
Observation of charge-parity symmetry breaking in baryon decays
/ LHCb Collaboration
The Standard Model of particle physics, the theory of particles and interactions at the smallest scale, predicts that matter and antimatter interact differently due to violation of the combined symmetry of charge conjugation ($C$) and parity ($P$). Charge conjugation transforms particles into their antimatter particles, while the parity transformation inverts spatial coordinates. [...]
arXiv:2503.16954; LHCb-PAPER-2024-054; CERN-EP-2025-031; LHCB-PAPER-2024-054.-
Geneva : CERN, 2025-07-16 - 29 p.
- Published in : 10.1038/s41586-025-09119-3
Fulltext: LHCb-PAPER-2024-054-supplementary - ZIP; 2503.16954 - PDF; Related data file(s): ZIP; External links: Interactions.org; Interactions.org
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2025-03-11
08:43 |
Branching fraction measurement of the decay $B^+ \to \psi(2S) \phi(1020) K^+$
/ LHCb Collaboration
The branching fraction of the decay $B^+\to \psi(2S)\phi(1020)K^+$, relative to the topologically similar decay $B^+\to J/\psi \phi(1020) K^+$, is measured using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of $9\,\mathrm{fb}^{-1}$. The ratio is found to be $0.061 \pm 0.004 \pm 0.009$, where the first uncertainty is statistical and the second systematic. [...]
arXiv:2503.02711; LHCb-PAPER-2024-039; CERN-EP-2025-011.-
Geneva : CERN, 2025-05-01 - 15 p.
- Published in : Phys. Rev. D 111 (2025) 092008
Fulltext: 2503.02711 - PDF PDF; PhysRevD.111.092008 - PDF; Related data file(s): ZIP;
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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$^{-1}$. 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: 2502.10291 - PDF; document - PDF; Related data file(s): ZIP;
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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. The measurement uses data collected by the LHCb experiment in 2018 corresponding to an integrated luminosity of 2 $\text{fb}^{-1}$. [...]
arXiv:2501.12611; LHCb-PAPER-2024-038; CERN-EP-2024-318; LHCB-PAPER-2024-038.-
Geneva : CERN, 2025-05-02 - 25 p.
- Published in : JHEP 2505 (2025) 011
Fulltext: 2501.12611 - PDF; document - PDF; Related data file(s): ZIP;
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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. The measurement is performed using a data sample of proton-proton collisions, recorded by the LHCb experiment from 2016 to 2018 at a center-of-mass energy of 13$\text{ TeV}$, which corresponds to an integrated luminosity of 5.4$\text{ fb}^{-1}$. [...]
arXiv:2502.04013; LHCb-PAPER-2024-051; CERN-EP-2024-340; LHCB-PAPER-2024-051.-
Geneva : CERN, 2025-05-01 - 14 p.
- Published in : Phys. Rev. D 111 (2025) L091102
Fulltext: LHCb-PAPER-2024-051-supplementary - ZIP; 2502.04013 - PDF; publication - PDF; Related data file(s): ZIP;
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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. Here, the $D^{**0}$ meson represents any of the three excited charm mesons $D_{1}(2420)^{0}$, $D_{2}^{*}(2460)^{0}$, and $D_{1}^{'}(2400)^{0}$. [...]
arXiv:2501.14943; LHCb-PAPER-2024-037; CERN-EP-2024-341; LHCB-PAPER-2024-037.-
Geneva : CERN, 2025-07-08 - 15 p.
- Published in : Phys. Rev. Lett. 135 (2025) 021802
Fulltext: 2501.14943 - PDF; document - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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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. The ratio of ${D^{0} \to K^{+} \pi^{-}}$ and ${D^{0} \to K^{-} \pi^{+}}$ decay rates is measured as a function of the decay time of the $D^{0}$ meson and compared with the charge-conjugated system to search for charge-parity violation. [...]
arXiv:2501.11635; LHCb-PAPER-2024-044; CERN-EP-2024-319; LHCB-PAPER-2024-044.-
Geneva : CERN, 2025-03-19 - 29 p.
- Published in : JHEP 2503 (2025) 149
Fulltext: 2501.11635 - PDF; document - PDF; Related data file(s): ZIP;
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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 $9 fb^{-1}$. The $K^0_{\rm S} K \pi$ invariant-mass distributions of both $B^+$ decay modes show, in the $m(K^0_{\rm S} K \pi)<1.85$ GeV mass region, a rich spectrum of light-meson resonances, resolved using an amplitude analysis. [...]
arXiv:2501.06483; LHCb-PAPER-2024-045; CERN-EP-2024-329; LHCb-PAPER-2024-045,CERN-EP-2024-329; LHCB-PAPER-2024-045.-
Geneva : CERN, 2025-05-01 - 32 p.
- Published in : Phys. Rev. D 111 (2025) 092009
Fulltext: 2501.06483 - PDF; Updated list of figures - ZIP; publication - PDF; Publication: PDF; Related data file(s): ZIP;
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