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CERN Document Server 找到 38 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 1.16 秒. 
1.
Measurement of prompt charged-particle production in $pp$ collisions at $\sqrt{s} = 13\,\mathrm{TeV}$ / LHCb Collaboration
The differential cross-section of prompt inclusive production of long-lived charged particles in proton-proton collisions is measured using a data sample recorded by the LHCb experiment at a centre-of-mass energy of ${\sqrt{s} = 13\,\mathrm{TeV}}$. The data sample, collected with an unbiased trigger, corresponds to an integrated luminosity of ${5.4\,\mathrm{nb}^{-1}}$. [...]
arXiv:2107.10090; LHCb-PAPER-2021-010; CERN-EP-2021-110; LHCB-PAPER-2021-010.- Geneva : CERN, 2022-01-27 - 35 p. - Published in : JHEP 2201 (2022) 166 Fulltext: LHCb-PAPER-2021-010 - PDF; 2107.10090 - PDF; document - PDF; Fulltext from publisher - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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2.
Observation of excited $\Omega_c^0$ baryons in $\Omega_b^- \to \Xi_c^+ K^-\pi^-$decays / LHCb Collaboration
The first observation of the $\Omega_b^-\to\Xi_c^+ K^- \pi^-$ decay is reported using proton-proton collision data at centre-of-mass energies of $7$, $8$ and $13\,\mathrm{TeV}$ collected by the LHCb experiment, corresponding to an integrated luminosity of $9\,\mathrm{fb}^{-1}$. Four excited $\Omega_c^0$ baryons are observed in the $\Xi_c^+ K^-$ mass projection of the $\Omega_b^-\to\Xi_c^+ K^- \pi^-$ decays with significance exceeding five standard deviations. [...]
arXiv:2107.03419; CERN-EP-2021-109; LHCb-PAPER-2021-012; LHCB-PAPER-2021-012.- Geneva : CERN, 2021-11-01 - 28 p. - Published in : Phys. Rev. D 104 (2021) L091102 Fulltext: 2107.03419 - PDF; PhysRevD.104.L091102 - PDF; Related data file(s): ZIP;
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3.
Study of coherent $J/\psi$ production in lead-lead collisions at $\sqrt{s_{NN}}=5$ TeV / LHCb Collaboration
Coherent production of $J/\psi$ mesons is studied in ultraperipheral lead-lead collisions at a nucleon-nucleon centre-of-mass energy of 5 TeV, using a data sample collected by the LHCb experiment corresponding to an integrated luminosity of about $10\ \mu b^{-1}$. The $J/\psi$ mesons are reconstructed in the dimuon final state and are required to have transverse momentum below 1 GeV. [...]
arXiv:2107.03223; CERN-CERN-EP-2021-108; LHCb-PAPER-2021-013; LHCB-PAPER-2021-013.- Geneva : CERN, 2022-07-19 - 19 p. - Published in : JHEP 2207 (2022) 117 Fulltext: LHCb-PAPER-2021-013_arxiv - PDF; document - PDF; 2107.03223 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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4.
Observation of the Mass Difference Between Neutral Charm-Meson Eigenstates / LHCb Collaboration
A measurement of mixing and $C\!P$ violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4$\textrm{fb}^{-1}$. A total of $30.6$ million $D^{0}\rightarrow K^{0}_{\mathrm{S}}\pi^{+}\pi^{-}$ decays are analyzed using a method optimized for the measurement of the mass difference between neutral charm-meson eigenstates. [...]
arXiv:2106.03744; LHCb-PAPER-2021-009; CERN-EP-2021-099; LHCB-PAPER-2021-009.- Geneva : CERN, 2021-09-07 - 12 p. - Published in : Phys. Rev. Lett. Fulltext: LHCb-PAPER-2021-009_v3 - PDF; 2106.03744 - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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5.
Branching Fraction Measurements of the Rare $B^0_s\rightarrow\phi\mu^+\mu^-$ and $B^0_s\rightarrow f_2^\prime(1525)\mu^+\mu^-$- Decays / LHCb Collaboration
The branching fraction of the rare $B^0_s\rightarrow\phi\mu^+\mu^-$ decay is measured using data collected by the LHCb experiment at center-of-mass energies of $7$, $8$ and $13\,\rm{TeV}$, corresponding to an integrated luminosity of $9\,{\rm fb}^{-1}$. The branching fraction is reported in intervals of $q^2$, the square of the dimuon invariant mass. [...]
arXiv:2105.14007; LHCb-PAPER-2021-014; CERN-EP-2021-092; LHCB-PAPER-2021-014.- Geneva : CERN, 2021-10-05 - 11 p. - Published in : Phys. Rev. Lett. 127 (2021) 151801 Fulltext: PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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6.
Search for time-dependent $CP$ violation in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays / LHCb Collaboration
A search for time-dependent violation of the charge-parity symmetry in $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$ decays is performed at the LHCb experiment using proton-proton collision data recorded from 2015 to 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb$^{-1}$. The $D^0$ meson is required to originate from a $D^*(2010)^+ \to D^0 \pi^+$ decay, such that its flavour at production is identified by the charge of the accompanying pion. [...]
arXiv:2105.09889; LHCb-PAPER-2020-045; CERN-EP-2021-060; LHCB-PAPER-2020-045.- Geneva : CERN, 2021-10-01 - 39 p. - Published in : Phys. Rev. D 104 (2021) 072010 Fulltext: 2105.09889 - PDF; LHCb-PAPER-2020-045 - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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7.
Search for the doubly charmed baryon ${\it{\Omega}_{cc}^{+}}$ / LHCb Collaboration
A search for the doubly charmed baryon $\it{\Omega}_{cc}^{+}$ with the decay mode $\it{\Omega}_{cc}^{+}\to\it{\Xi}_c^{+}K^{-}\pi^{+}$ is performed using proton-proton collision data at a centre-of-mass energy of 13$\mathrm{\,Te\kern -0.1em V}$ collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of $5.4\,\mathrm{fb}^{-1}$. No significant signal is observed within the invariant mass range of 3.6 to 4.0$\mathrm{\,Ge\kern -0.1em V}/c^2$. [...]
arXiv:2105.06841; LHCb-PAPER-2021-011; CERN-EP-2021-068; LHCB-PAPER-2021-011.- 2021-08-31 - 12 p. - Published in : Sci. China Phys. Mech. Astron. 64 (2021) 101062 Fulltext: document - PDF; 2105.06841 - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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8.
Angular analysis of $ {B}^0\to {D}^{\ast -}{D}_s^{\ast +} $ with $ {D}_s^{\ast +}\to {D}_s^{+}\gamma $ decays / LHCb Collaboration
The first full angular analysis of the $B^0 \to D^{*-} D_s^{*+}$ decay is performed using 6 fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The $D_s^{*+} \to D_s^+ \gamma$ and $D^{*-} \to \bar{D}^0 \pi^-$ vector meson decays are used with the subsequent $D_s^+ \to K^+ K^- \pi^+$ and $\bar{D}^0 \to K^+ \pi^-$ decays. [...]
arXiv:2105.02596; LHCb-PAPER-2021-006; CERN-EP-2021-056; LHCB-PAPER-2021-006.- Geneva : CERN, 2021-06-29 - 31 p. - Published in : JHEP 2106 (2021) 177 Fulltext: LHCb-PAPER-2021-006 - PDF; document - PDF; 2105.02596 - PDF; Related data file(s): ZIP;
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9.
Measurement of $CP$ asymmetry in $D^0 \to K^0_S K^0_S$ decays / LHCb Collaboration
A measurement of the $CP$ asymmetry in $D^0 \to K^0_S K^0_S$ decays is reported, based on a data sample of proton-proton collisions collected by the LHCb experiment from 2015 to 2018, corresponding to an integrated luminosity of 6 fb$^{-1}$. The flavor of the $D^0$ candidate is determined using the charge of the $D^{*\pm}$ meson, from which the decay is required to originate. [...]
arXiv:2105.01565; LHCb-PAPER-2020-047; CERN-EP-2021-058; LHCB-PAPER-2020-047.- Geneva : CERN, 2021-08-01 - 11 p. - Published in : Phys. Rev. D 104 (2021) L031102 Fulltext: LHCb-PAPER-2020-047 - PDF; 2105.01565 - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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10.
Search for $CP$ violation in $\Xi^-_b \to p K^- K^-$decays / LHCb Collaboration
A search for $CP$ violation in charmless three-body $\Xi_b^- \to p K^- K^-$ decays is performed using $pp$ collision data recorded with the LHCb detector, corresponding to integrated luminosities of $1\,\text{fb}^{-1}$ at a centre-of-mass energy $\sqrt{s} = 7\,\text{TeV}$, $2\,\text{fb}^{-1}$ at $\sqrt{s} = 8\,\text{TeV}$ and $2\,\text{fb}^{-1}$ at $\sqrt{s} = 13\,\text{TeV}$. A good description of the phase-space distribution is obtained with an amplitude model containing contributions from $\Sigma(1385)$, $\Lambda(1405)$, $\Lambda(1520)$, $\Lambda(1670)$, $\Sigma(1775)$ and $\Sigma(1915)$ resonances. [...]
arXiv:2104.15074; LHCb-PAPER-2020-017; CERN-EP-2021-062.- 2021-09-01 - 29 p. - Published in : Phys. Rev. D 104 (2021) 052010 Fulltext: 2104.15074 - PDF; PhysRevD.104.052010 - PDF;
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