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CERN Document Server Encontrados 2,050 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 3.74 segundos. 
1.
(100)
Curvature-bias corrections using a pseudomass method / LHCb Collaboration
Momentum measurements for very high momentum charged particles, such as muons from electroweak vector boson decays, are particularly susceptible to charge-dependent curvature biases that arise from misalignments of tracking detectors. Low momentum charged particles used in alignment procedures have limited sensitivity to coherent displacements of such detectors, and therefore are unable to fully constrain these misalignments to the precision necessary for studies of electroweak physics. [...]
arXiv:2311.04670; LHCb-DP-2023-001; CERN-EP-2023-246.- 2024-03-12 - 22 p. - Published in : JINST 19 (2024) P03010 Fulltext: document - PDF; 2311.04670 - PDF;
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2.
(91)
Search for rare decays of $D^0$ mesons into two muons / LHCb Collaboration
A search for the very rare $D^0 \to \mu^+\mu^-$ decay is performed using data collected by the LHCb experiment in proton-proton collisions at $\sqrt{s} = 7$, 8 and $13~\rm{TeV}$, corresponding to an integrated luminosity of $9~\rm{fb^{-1}}$. The search is optimised for $D^0$ mesons from $D^{\ast+}\to D^0\pi^+$ decays but is also sensitive to $D^0$ mesons from other sources. [...]
arXiv:2212.11203; LHCb-PAPER-2022-029; CERN-EP-2022-273.- 2023-07-26 - 13 p. - Published in : Phys. Rev. Lett. 131 (2023) 041804 Fulltext: PDF;
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3.
(91)
Amplitude analysis of $B^0 \rightarrow \overline{D}^0 D_s^+ \pi^-$ and $B^+ \rightarrow D^- D_s^+ \pi^+$ decays / LHCb Collaboration
Resonant contributions in $B^0 \rightarrow \overline{D}{}^0 D^+_s\pi^-$ and $B^+\rightarrow D^- D^+_s\pi^+$ decays are determined with an amplitude analysis, which is performed both separately and simultaneously, where in the latter case isospin symmetry between the decays is assumed. The analysis is based on data collected by the LHCb detector in proton-proton collisions at center-of-mass energies of 7, 8 and 13 TeV. [...]
arXiv:2212.02717; LHCb-PAPER-2022-027; CERN-EP-2022-246.- Geneva : CERN, 2023-07-01 - 30 p. - Published in : Phys. Rev. D 108 (2023) 012017 Fulltext: 2212.02717 - PDF; LHCb-PAPER-2022-027 - PDF; Publication - PDF; Related data file(s): ZIP;
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4.
(91)
First observation of a doubly charged tetraquark and its neutral partner / LHCb Collaboration
A combined amplitude analysis is performed for the decays $B^0 \rightarrow \overline{D}{}^0 D^+_s\pi^-$ and $B^+\rightarrow D^- D^+_s\pi^+$, which are related by isospin symmetry. The analysis is based on data collected by the LHCb detector in proton-proton collisions at center-of-mass energies of 7, 8 and 13 TeV. [...]
arXiv:2212.02716; LHCb-PAPER-2022-026; CERN-EP-2022-239.- Geneva : CERN, 2023-07-27 - 12 p. - Published in : Phys. Rev. Lett. 131 (2023) 041902 Fulltext: Publication - PDF; LHCb-PAPER-2022-026 - PDF; 2212.02716 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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5.
(90)
Search for $K^0_{\mathrm{S(L)}}\to\mu^+\mu^-\mu^+\mu^-$ decays at LHCb / LHCb Collaboration
A search for $K_{\textrm{S(L)}}^0\rightarrow\mu^{+}\mu^{-}\mu^{+}\mu^{-}$ decays is performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.1 $\text{fb}^{-1}$. No evidence for signal is found. [...]
arXiv:2212.04977; CERN-EP-2022-255; LHCb-PAPER-2022-035; LHCB-PAPER-2022-035.- Geneva : CERN, 2023-08-01 - 12 p. - Published in : Phys. Rev. D 108 (2023) L031102 Fulltext: 2212.04977 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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6.
(90)
Observation of a $J/\psi\Lambda$ resonance consistent with a strange pentaquark candidate in $B^-\to J/\psi\Lambda\bar{p}$ decays / LHCb Collaboration
An amplitude analysis of $J/\psi\Lambda$ decays is performed using about 4400 signal candidates selected on a data sample of $pp$ collisions recorded at center-of-mass energies of 7, 8 and 13 TeV with the LHCb detector, corresponding to an integrated luminosity of 9 fb$^{-1}$. A narrow resonance in the $J/\psi\Lambda$ system, consistent with a pentaquark candidate with strangeness, is observed with high significance. [...]
arXiv:2210.10346; CERN-EP-2022-198; LHCb-PAPER-2022-031.- Geneva : CERN, 2023-07-17 - 11 p. - Published in : Phys. Rev. Lett. 131 (2023) 031901 Cover note: ZIP; Fulltext: 2210.10346 - PDF; Publication - PDF; Supplementary information: ZIP;
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7.
(90)
Test of lepton universality in $b \rightarrow s \ell^+ \ell^-$ decays / LHCb Collaboration
The first simultaneous test of muon-electron universality using $B^{+}\rightarrow K^+\ell^+ \ell^−$ and $B^{0} \rightarrow K^{*0} \ell^{+} \ell^{−}$ decays is performed, in two ranges of the dilepton invariant-mass squared, $q^{2}$. The analysis uses beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 $\mathrm{fb}^{-1}$. [...]
arXiv:2212.09152; LHCb-PAPER-2022-046; CERN-EP-2022-277.- Geneva : CERN, 2023-08-02 - 13 p. - Published in : Phys. Rev. Lett. 131 (2023) 051803 Fulltext: 2212.09152 - PDF; Publication - PDF; LHCb-PAPER-2022-046 - PDF; Related data file(s): ZIP;
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8.
(90)
Measurement of lepton universality parameters in $B^+\to K^+\ell^+\ell^-$ and $B^0\to K^{*0}\ell^+\ell^-$ decays / LHCb Collaboration
A simultaneous analysis of the $B^+\to K^+\ell^+\ell^-$ and $B^0\to K^{*0}\ell^+\ell^-$ decays is performed to test muon-electron universality in two ranges of the square of the dilepton invariant mass, $q^2$. The measurement uses a sample of beauty meson decays produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of $9$ $\text{fb}^{-1}$. [...]
arXiv:2212.09153; LHCb-PAPER-2022-045; CERN-EP-2022-278.- Geneva : CERN, 2023-08-01 - 46 p. - Published in : Phys. Rev. D 108 (2023) 032002 Fulltext: 2212.09153 - PDF; LHCb-PAPER-2022-045 - PDF; Publication - PDF; Related data file(s): ZIP;
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9.
(88)
Search for direct $CP$ violation in charged charmless $B \to PV$ decays / LHCb Collaboration
Measurements of $CP$ asymmetry in charmless $B\to PV$ decays are presented, where $P$ and $V$ denote a pseudoscalar and a vector meson, respectively. Five different $B\to PV$ decays from four final states, $B^\pm \to \pi^\pm \pi^+ \pi^-$, $B^\pm \to K^\pm \pi^+ \pi^-$, $B^\pm \to K^\pm K^+ K^-$ and $B^\pm \to \pi^\pm K^+ K^-$ are analised. [...]
arXiv:2206.02038; LHCb-PAPER-2021-050; CERN-EP-2022-101.- Geneva : CERN, 2023-07-01 - 13 p. - Published in : Phys. Rev. D 108 (2023) 012013 Fulltext: 2206.02038 - PDF; LHCb-PAPER-2021-050 - PDF; Publication - PDF; Related data file(s): ZIP;
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10.
(87)
Direct $CP$ violation in charmless three-body decays of $B^{\pm}$ mesons / LHCb Collaboration
Measurements of $CP$ asymmetries in charmless three-body decays of $B^\pm$ mesons are reported using proton-proton collision data collected by the LHCb detector, corresponding to an integrated luminosity of 5.9$\,$fb$^{-1}$. The previously observed $CP$ asymmetry in $B^\pm \to \pi^\pm K^+ K^-$ decays is confirmed, and $CP$ asymmetries are observed with a significance of more than five standard deviations in the $B^\pm \to \pi^\pm \pi^+ \pi^-$ and $B^\pm \to K^\pm K^+ K^-$ decays, while the $CP$ asymmetry of $B^\pm \to K^\pm \pi^+ \pi^-$ decays is confirmed to be compatible with zero. [...]
arXiv:2206.07622; LHCb-PAPER-2021-049; CERN-EP-2022-100.- Geneva : CERN, 2023-07-01 - 17 p. - Published in : Phys. Rev. D 108 (2023) 012008 Fulltext: 2206.07622 - PDF; LHCb-PAPER-2021-049 - PDF; Publication - PDF; LHCb-PAPER-2021-049-supplementary - ZIP; Related data file(s): ZIP;
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