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CERN Document Server 628 のレコードが見つかりました。  1 - 10次最後  レコードへジャンプ: 検索にかかった時間: 0.74 秒 
1.
Amplitude analysis of the $\Xi^+_c\to pK^-\pi^+$ decay and $\Xi^+_c$ baryon polarization measurement in semileptonic beauty-hadron decays / LHCb Collaboration
An amplitude analysis of the $\Xi^+_c\to pK^-\pi^+$ decay together with a measurement of the $\Xi^+_c$ polarization vector in semileptonic beauty-hadron decays is presented. [...]
arXiv:2508.00492 ; LHCb-PAPER-2024-034 ; CERN-EP-2024-320.
- 2025 - 38.
Fulltext - Full text - Fulltext - Full text
2.
Measurement of transverse $\Lambda$ and $\bar\Lambda$ hyperon polarisation in $p$Pb collisions at $\sqrt{s_{NN}} = 5.02$ TeV / LHCb Collaboration
The transverse polarization of $Λ$ and $\barΛ$ hyperons is measured in $p$Pb collisions collected by the LHCb experiment at a nucleon-nucleon center-of-mass energy of $5.02 $ TeV. [...]
arXiv:2508.02009 ; LHCb-PAPER-2025-004 ; CERN-EP-2025-153 ; LHCB-PAPER-2025-004.
- 2025 - 24.
Additional information for the analysis - Fulltext - Previous draft version - Fulltext
3.
Search for the lepton-flavour-violating decays $B^0 \to K^{*0} τ^\pm e^\mp$ / LHCb Collaboration
A first search for the lepton-flavour-violating decays $B^0\to K^{*0}τ^\pm e^\mp$ is presented. [...]
arXiv:2506.15347 ; LHCb-PAPER-2025-005 ; CERN-EP-2025-107.
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Fulltext - Full text
4.
Coherent photoproduction of $\rho^0, \omega$ and excited vector mesons in ultraperipheral PbPb collisions / LHCb Collaboration
The invariant-mass distribution for the coherent photoproduction of dipions in ultraperipheral PbPb collisions is measured using data, corresponding to an integrated luminosity of $ 224.6 \pm 9.6\ \mu$b$^{-1}$, collected by the LHCb experiment in 2018 at a nucleon-nucleon centre-of-mass energy $\sqrt{s_{\rm NN}}=5.02$ TeV. [...]
arXiv:2506.06250 ; CERN-EP-2025-106 ; LHCB-PAPER-2024-042.
- 2025 - 22.
Fulltext - Related data file(s) - 00005 Invariant-mass fits to data (left) in the region between 400 and 1200\mev, where the signal contribution is parametrised by Eq.~\ref{eq:sodh1}, and (right) in the full region, where the signal model is parametrised by Eq.~\ref{eq:best}, which includes two additional resonances and a phase for the nonresonant component. - 00004 Invariant-mass fits to data (left) in the region between 400 and 1200\mev, where the signal contribution is parametrised by Eq.~\ref{eq:sodh1}, and (right) in the full region, where the signal model is parametrised by Eq.~\ref{eq:best}, which includes two additional resonances and a phase for the nonresonant component. - 00000 Graphical representation of $\rho$-meson photoproduction in PbPb collisions. The shaded area depicts the interaction of the $\rho$ meson with the target. - 00007 Differential cross-section multiplied by the branching fraction to dipions, in bins of rapidity, for $\omega,\rho^\prime$ and $\rho^{\prime\prime}$ coherent photoproduction. The error bars represent the statistical uncertainty, while the bands correspond to the total uncertainty. - 00006 Differential cross-section for coherent $\rho$ photoproduction as a function of rapidity. The LHCb error bars represent the statistical and total uncertainties. The shaded band corresponds to the estimated uncertainty on the GKZ prediction. The contributions due to the photon emitted from each ion are labelled as $W^+$ and $W^-$ and are explained further in Sec.~\ref{sec:supp}. Also shown are ALICE results at central rapidity and the output of the \textsc{STARlight} generator. - 00003 Invariant-mass fits to data where the signal model includes a contribution for the $\omega$ resonance with the parametrisation of (left) Eq.~\ref{eq:sod2} and (right) Eq.~\ref{eq:sodh1}. - 00002 Invariant-mass fits to data where the signal model includes a contribution for the $\omega$ resonance with the parametrisation of (left) Eq.~\ref{eq:sod2} and (right) Eq.~\ref{eq:sodh1}. - 00009 Differential cross-section for the $\rho$ meson as a function of rapidity for data (left) compared to the impulse approximation, Glauber model, and Gribov--Glauber model and (right) with the estimated contributions from photoproduction on each ion in the Gribov--Glauber model after including nuclear suppression factors. The impulse approximation has been scaled down by a factor of two so it can be viewed with this axis-range. - 00001 Dipion invariant-mass distribution with the result of the fit superimposed, where the signal is modelled by the function in Eq.~\ref{eq:sod1}. The lower panel shows the normalised residuals. - Fulltext - 00008 Differential cross-section for the $\rho$ meson as a function of rapidity for data (left) compared to the impulse approximation, Glauber model, and Gribov--Glauber model and (right) with the estimated contributions from photoproduction on each ion in the Gribov--Glauber model after including nuclear suppression factors. The impulse approximation has been scaled down by a factor of two so it can be viewed with this axis-range.
5.
Three-pion Bose-Einstein correlations measured in proton-proton collisions / LHCb Collaboration
A study on the Bose-Einstein correlations for triplets of same-sign pions is presented. The analysis is performed using proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 7 TeV, recorded by the LHCb experiment, corresponding to an integrated luminosity of 1.0 fb$^{-1}$. [...]
arXiv:2506.03072; CERN-EP-2025-104; LHCb-PAPER-2025-007.- 2025-08-21 - 27 p. - Published in : JHEP 2508 (2025) 174 Fulltext: 2506.03072 - PDF; document - PDF;
6.
Measurement of the $Z$-boson mass / LHCb Collaboration
The first dedicated $Z$-boson mass measurement at the LHC with $Z \to \mu^+\mu^-$ decays is reported. [...]
arXiv:2505.15582 ; LHCb-PAPER-2025-008 ; CERN-EP-2025-111 ; LHCB-PAPER-2025-008.
- 2025 - 22.
Fulltext - Related data file(s) - Full text - Fulltext
7.
Measurements of charmed meson and antimeson production asymmetries at $\sqrt{s} =13.6$ TeV / LHCb Collaboration
This article presents doubly differential measurements of the asymmetries in production rates between mesons containing a charm quark and those containing an anticharm quark in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=13.6$ TeV using data recorded by the LHCb experiment. [...]
arXiv:2505.14494 ; LHCb-PAPER-2024-052 ; CERN-EP-2025-087 ; LHCB-PAPER-2024-052.
- 2025 - 43.
Fulltext - Related data file(s) - Fulltext - Supplementary information
8.
Rapidity and multiplicity dependence of charged-particle flow in $p$Pb collisions at $\sqrt{s_{\rm NN}}=8.16$ Tev / LHCb Collaboration
The elliptic and triangular flow of charged particles are measured using two-particle angular correlations in $p$Pb collisions in the pseudorapidity range 2.0 $< |\eta| <$ 4.8. [...]
arXiv:2505.09273 ; CERN-EP-2025-090 ; LHCb-PAPER-2025-003.
- 2025 - 38.
Fulltext - Related data file(s) - Fulltext - Full text
9.
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
10.
Observation of the decay $B_s^0 \to K_S^0 p \bar{p}$ and measurement of the $B_{(s)}^0 \to K_S^0 p\bar{p}$ branching fraction / LHCb Collaboration
A study of the charmless baryonic decays $B^0_{(s)}\rightarrow K^0 p \bar{p}$ is presented, where $B^0_{(s)}$ denotes either a $B^0$ or a $B^0_s$ meson. The analysis is based on proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and $13~\mathrm{Tev}$, corresponding to an integrated luminosity of $9~\mathrm{fb}^{-1}$. [...]
arXiv:2504.21269; LHCb-PAPER-2025-001; CERN-EP-2025-085.- Geneva : CERN, 2025-07-09 - 25 p. - Published in : JHEP 2507 (2025) 121 Fulltext: LHCb-PAPER-2025-001 - PDF; LHCb-PAPER-2025-001-supplementary - PDF; LHCb-PAPER-2025-001-Supplementary - ZIP; 2504.21269 - PDF; document - PDF; Related data file(s): ZIP;

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