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CERN Document Server Sök i 280 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.92 sekunder. 
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.
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
3.
Observation of orbitally excited $B_{c}^{+}$ states / LHCb Collaboration
The observation of a wide peaking structure in the $B_{c}^{+} γ$ mass spectrum is reported using proton-proton collision data collected by the LHCb detector at center-of-mass energies of $7$, $8$ and $13~\text{TeV}$, corresponding to a total integrated luminosity of $9~\text{fb}^{-1}$. [...]
arXiv:2507.02149 ; LHCb-PAPER-2025-014 ; CERN-EP-2025-123.
- 18.
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4.
Study of $B_{c}(1P)^{+}$ states in the $B_{c}^{+} \gamma$ mass spectrum / LHCb Collaboration
The study of a wide peaking structure in the $B_{c}^{+} γ$ mass spectrum is reported using a data sample of proton-proton collisions collected by the LHCb detector at center-of-mass energies of $7$, $8$ and $13~\text{TeV}$, corresponding to an integrated luminosity of $9~\text{fb}^{-1}$. [...]
arXiv:2507.02142 ; LHCb-PAPER-2025-015 ; CERN-EP-2025-122.
- 28.
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5.
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
6.
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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7.
Measurement of the $\Omega_c^0$ and $\Xi_c^0$ baryon lifetimes using hadronic $b$-baryon decays / LHCb Collaboration
The lifetimes of the $\Omega_c^0$ and $\Xi_c^0$ baryons are measured using a $pp$ collision dataset collected by the LHCb experiment, corresponding to an integrated luminosity of $9~\rm{fb^{-1}}$. The charm baryons are produced in the fully reconstructed decay chains $\Omega_b^- \rightarrow \Omega_c^0 (\rightarrow pK^-K^-\pi^+)~\pi^-$ and $\Xi_b^- \rightarrow \Xi_c^0 (\rightarrow pK^-K^-\pi^+)~\pi^-$. [...]
arXiv:2506.13334; LHCb-PAPER-2025-013,CERN-EP-2025-117; LHCb-PAPER-2025-013; CERN-EP-2025-117; LHCB-PAPER-2025-013.- Geneva : CERN, 2025-09-18 - 25 p. - Published in : JHEP 2509 (2025) 157 Fulltext: LHCb-PAPER-2025-013 - PDF; pdf - PDF; LHCb-PAPER-2025-013-supplementary - ZIP; 2506.13334 - PDF; document - PDF; Related data file(s): ZIP;
8.
Measurement of $\psi(2S)$ to $J/\psi$ cross-section ratio as function of multiplicity in $p$Pb collisions at $\sqrt{s_{NN}} = 8.16$ TeV / LHCb Collaboration
The production ratio of $\psi(2S)$ to $J/\psi$ charmonium states is presented as a function of multiplicity in proton-lead collisions at a centre-of-mass energy of $\sqrt{s_{NN}}=8.16$ TeV, for both prompt and nonprompt sources. [...]
arXiv:2506.08624 ; LHCb-PAPER-2025-011 ; CERN-EP-2025-114 ; LHCB-PAPER-2025-011.
- 2025 - 23.
Fulltext - Related data file(s) - Fulltext - Fulltext
9.
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.
10.
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;

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1 Mohammed, R A
1 Mohammed, Riyazuddin
2 Mohammed, Rizwaan
290 Mohammed, Rizwaan Adeeb
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