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Search for prompt production of pentaquarks in charm hadron final states / LHCb Collaboration
A search for hidden-charm pentaquark states decaying to a range of $\Sigma_{c}\bar{D}$ and $\Lambda_{c}^{+}\bar{D}$ final states, as well as doubly-charmed pentaquark states to $\Sigma_{c}D$ and $\Lambda_{c}^{+}D$, is made using samples of proton-proton collision data corresponding to an integrated luminosity of $5.7fb^{-1}$ recorded by the LHCb detector at $\sqrt{s} = 13 Te\kern -0.1em V$. Since no significant signals are found, upper limits are set on the pentaquark yields relative to that of the $\Lambda_{c}^+$ baryon in the $\Lambda_{c}^{+}\to pK^{-}\pi^{+}$ decay mode. [...]
arXiv:2404.07131; LHCb-PAPER-2023-018; CERN-EP-2024-071; LHCB-PAPER-2023-018.- Geneva : CERN, 2024-08-01 - 19 p. - Published in : Phys. Rev. D 110 (2024) 032001 Fulltext: 2404.07131 - PDF; LHCb-PAPER-2023-018 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: PDF;

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Observation and branching fraction measurement of the decay $\Xi_b^- \to \Lambda_b^0 \pi^-$ / LHCb Collaboration
The decay $\Xi_b^-\to\Lambda_b^0\pi^-$ is observed using a proton-proton collision data sample collected at center-of-mass energy $\sqrt{s}=13$ TeV with the LHCb detector, corresponding to an integrated luminosity of 5.5 fb$^{-1}$. This process is mediated by the $s\to u\bar{u}d$ quark-level transition, where the $b$ quark in the $\Xi_b^-$ baryon is a spectator in the decay. [...]
arXiv:2307.09427; LHCb-PAPER-2023-015; CERN-EP-2023-116; LHCB-PAPER-2023-015.- Geneva : CERN, 2023-10-01 - 16 p. - Published in : Phys. Rev. D 108 (2023) 072002 Fulltext: 2307.09427 - PDF; Publication - PDF; Xib2LbPi_2023_14Aug2023 - PDF; External link: Previous draft version

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Measurement of the $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s} = 5.02$ TeV / LHCb Collaboration
The first measurement of the $Z$ boson production cross-section at centre-of-mass energy $\sqrt{s} = 5.02\,$TeV in the forward region is reported, using $pp$ collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of $100 \pm 2\,\rm{pb^{-1}}$. The production cross-section is measured for final-state muons in the pseudorapidity range $2.0<\eta<4.5$ with transverse momentum $p_{\rm{T}}> 20\,\rm{GeV/}\it{c}$. [...]
arXiv:2308.12940; LHCb-PAPER-2023-010; CERN-EP-2023-141; LHCB-PAPER-2023-010.- Geneva : CERN, 2024-02-13 - 38 p. - Published in : JHEP 2402 (2024) 070 Fulltext: 2308.12940 - PDF; LHCb-PAPER-2023-010 - PDF; Publication - PDF; Related data file(s): ZIP;

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Measurement of the CKM angle $\gamma$ using the $B^{\pm}\rightarrow D^*h^{\pm}$ channels / LHCb Collaboration
A measurement of the $CP$-violating observables from $B^{\pm}\rightarrow D^* K^{\pm}$ and $\mbox{$B^{\pm}\rightarrow D^* \pi^{\pm}$}$ decays is presented, where $D^* (D) $ is an admixture of $D^{*0}$ and $\bar{D}^{*0}$ ($D^0$ and $\bar{D}^0$) states and is reconstructed through the decay chains $ D^* \rightarrow D\pi^0/\gamma$ and $\mbox{$D \to K_S^0 \pi^+\pi^-/K_S^0 K^+K^-$}$. The measurement is performed by analysing the signal yield variation across the $D$ decay phase space and is independent of any amplitude model. [...]
arXiv:2310.04277; LHCb-PAPER-2023-012; CERN-EP-2023-170.- Geneva : CERN, 2023-12-01 - 32 p. - Published in : JHEP 2312 (2023) 13 Fulltext: 2310.04277 - PDF; document - PDF; Publication - PDF; latex_B2Dsth_JHEP - PDF; Related data file(s): ZIP;

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Observation of $\Xi_b^0 \rightarrow \Xi_c^+ D_s^-$ and $\Xi_b^- \rightarrow \Xi_c^0 D_s^-$ decaysObservation of $\Xi_b^0 \rightarrow \Xi_c^+ D_s^-$ and $\Xi_b^- \rightarrow \Xi_c^0 D_s^-$ decays / LHCb Collaboration
The $\Xi_b^0 \rightarrow \Xi_c^+ D_s^-$ and $\Xi_b^- \rightarrow \Xi_c^0 D_s^-$ decays are observed for the first time using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s}=13\mathrm{TeV}$, corresponding to an integrated luminosity of $5.1\mathrm{fb}^{-1}$. The relative branching fractions times the beauty-baryon production cross-sections are measured to be $\begin{align*} \mathcal{R}\left(\frac{\Xi_b^0}{\Lambda_b^0}\right) &\equiv \frac{\sigma\left(\Xi_b^0\right)}{\sigma\left(\Lambda_b^0\right)} \times \frac{\mathcal{B}\left(\Xi_b^0 \rightarrow \Xi_c^+ D_s^-\right)}{\mathcal{B}\left(\Lambda_b^0 \rightarrow \Lambda_c^0 D_s^-\right)} =(15.8\pm1.1\pm0.6\pm7.7)\%,\\ \mathcal{R}\left(\frac{\Xi_b^-}{\Lambda_b^0}\right) &\equiv \frac{\sigma\left(\Xi_b^-\right)}{\sigma\left(\Lambda_b^0\right)} \times \frac{\mathcal{B}\left(\Xi_b^- \rightarrow \Xi_c^0 D_s^-\right)}{\mathcal{B}\left(\Lambda_b^0 \rightarrow \Lambda_c^0 D_s^-\right)} =(16.9\pm1.3\pm0.9\pm4.3)\%, \end{align*}$ where the first uncertainties are statistical, the second systematic, and the third due to the uncertainties on the branching fractions of relevant charm-baryon decays. [...]
arXiv:2310.13546; CERN-EP-2023-173; LHCb-PAPER-2023-017.- Geneva : CERN, 2024-03-07 - 17 p. - Published in : Eur. Phys. J. C 84 (2024) 237 Fulltext: LHCb-PAPER-2023-017 - PDF; 2310.13546 - PDF; Publication - PDF; Related data file(s): ZIP;

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Measurement of prompt $D^+$ and $D^+_{s}$ production in $p\mathrm{Pb}$ collisions at $\sqrt {s_{\mathrm{NN}}}=5.02\,$TeV / LHCb Collaboration
The production of prompt $D^+$ and $D^+_{s}$ mesons is studied in proton-lead collisions at a centre-of-mass energy of $\sqrt {s_{\mathrm{NN}}}=5.02\,$TeV. The data sample corresponding to an integrated luminosity of $(1.58\pm0.02)\mathrm{nb}^{-1}$ is collected by the LHCb experiment at the LHC. [...]
arXiv:2309.14206; CERN-EP-2023-142; LHCb-PAPER-2023-006.- 2024-01-15 - 45 p. - Published in : JHEP 2401 (2024) 070 Fulltext: document - PDF; 2309.14206 - PDF;

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Measurement of CP violation in $B^0\to \psi(\to\ell^+\ell^-)K^0_\mathrm{S}(\to \pi^+\pi^-)$ decays / LHCb Collaboration
<--!html> A measurement of time-dependent $C\!P$ violation in the decays of $B^0$ and $\overline{B}^0$ mesons to the final states ${J\!/\!\psi(\to\mu^+\mu^-)K^0_\mathrm{S}}$, $\psi(2S)(\to\mu^+\mu^-)K^0_\mathrm{S}$ and $J\!/\!\psi(\to e^+e^-)K^0_\mathrm{S}$ with ${K^0_\mathrm{S}}\to{\pi^+\pi^-}$ is presented. The data correspond to an integrated luminosity of $6\,\mathrm{fb}^{-1}$ collected at a centre-of-mass energy of $\sqrt{s}=13\,\mathrm{TeV}$ with the LHCb detector. [...]
arXiv:2309.09728; LHCb-PAPER-2023-013; CERN-EP-2023-177.- Geneva : CERN, 2024-01-08 - 12 p. - Published in : Phys. Rev. Lett. 132 (2024) 021801 Fulltext: 2309.09728 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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Observation of Cabibbo-suppressed two-body hadronic decays and precision mass measurement of the $\Omega_{c}^{0}$ baryon / LHCb Collaboration
The first observation of the singly Cabibbo-suppressed $\Omega_{c}^{0}\to\Omega^{-}K^{+}$ and $\Omega_{c}^{0}\to\Xi^{-}\pi^{+}$ decays is reported, using proton-proton collision data at a center-of-mass energy of $13\,{\rm TeV}$, corresponding to an integrated luminosity of $5.4\,{\rm fb}^{-1}$, collected with the LHCb detector between 2016 and 2018. The branching fraction ratios are measured to be $\frac{\mathcal{B}(\Omega_{c}^{0}\to\Omega^{-}K^{+})}{\mathcal{B}(\Omega_{c}^{0}\to\Omega^{-}\pi^{+})}=[6.08\pm0.51({\rm stat})\pm 0.40({\rm syst})]\%$, $\frac{\mathcal{B}(\Omega_{c}^{0}\to\Xi^{-}\pi^{+})}{\mathcal{B}(\Omega_{c}^{0}\to\Omega^{-}\pi^{+})}=[15.81\pm0.87({\rm stat})\pm0.44({\rm syst})\pm0.16({\rm ext})]\%$. [...]
arXiv:2308.08512; LHCb-PAPER-2023-011; CERN-EP-2023-155.- Geneva : CERN, 2024-02-23 - 18 p. - Published in : Phys. Rev. Lett. 132 (2024) 081802 Fulltext: 2308.08512 - PDF; LHCb-PAPER-2023-011(arXiv-2308.08512) - PDF; Publication - PDF; Related data file(s): ZIP;

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$\Lambda_c^+$ polarimetry using the dominant hadronic mode / LHCb Collaboration
The polarimeter vector field for multibody decays of a spin-half baryon is introduced as a generalisation of the baryon asymmetry parameters. Using a recent amplitude analysis of the $\Lambda_c^+ \to p K^- \pi^+$ decay performed at the LHCb experiment, we compute the distribution of the kinematic-dependent polarimeter vector for this process in the space of Mandelstam variables to express the polarised decay rate in a model-agnostic form. [...]
arXiv:2301.07010; LHCb-PAPER-2022-044; CERN-EP-2022-287.- Geneva : CERN, 2023-07-31 - 20 p. - Published in : JHEP 2307 (2023) 228 Fulltext: document - PDF; LHCb-PAPER-2022-044 - PDF; 2301.07010 - PDF; Related data file(s): ZIP;

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10.

Observation of the decays $ {B}_{(s)}^0 $ → D$_{s1}$(2536)$^{∓}$K$^{±}$ / LHCb Collaboration
This paper reports the observation of the decays $B_{(s)}^{0}\to D_{s1}(2536)^{\mp}K^{\pm}$ using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of $9\,\mathrm{fb}^{-1}$. The branching fractions of these decays are measured relative to the normalisation channel $B^{0}\to \kern 0.18em\overline{\kern -0.18em D}^{0}K^{+}K^{-}$. [...]
arXiv:2308.00587; LHCb-PAPER-2023-014; CERN-EP-2023-140.- Geneva : CERN, 2023-10-17 - 26 p. - Published in : JHEP 2310 (2023) 106 Fulltext: 2308.00587 - PDF; document - PDF; arxiv_version - PDF; Related data file(s): ZIP;

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Voir aussi: noms d'auteurs similaires
3	Dean, C
1	Dean, C -T
1	Dean, C B
3	Dean, C T
1	Dean, C.
1	Dean, C.-T.
63	Dean, C.T.
4	Dean, Cameron
1	Dean, Cleon
1	Dean, Cornelia

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