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CERN Document Server Pronađeno je 200 zapisa  1 - 10slijedećikraj  idi na zapis: Pretraživanje je potrajalo 0.55 sekundi 
1.
Measurement of the branching fraction ratios $R(D^+)$ and $R(D^{*+})$ using muonic $\tau$ decays / LHCb Collaboration
The branching fraction ratios of $\kern 0.18em \overline{\kern -0.18em B}{}^0\to D^+\tau^-\overline{\nu}_{\tau}$ and $\kern 0.18em \overline{\kern -0.18em B}{}^0\to D^{*+}\tau^-\overline{\nu}_{\tau}$ decays are measured with respect to their muonic counterparts, using a data sample corresponding to an integrated luminosity of 2.0 fb$^{-1}$ collected by the LHCb experiment in proton-proton collisions at $\sqrt{s} = 13\,\text{TeV}$. [...]
arXiv:2406.03387 ; LHCb-PAPER-2024-007 ; CERN-EP-2024-125 ; LHCB-PAPER-2024-007. - 2024 - 22.
Fulltext - Related data file(s) - Supplementary information - Fulltext
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2.
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: 2309.14206 - PDF; document - PDF;
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3.
A search for rare $B \to D \mu^+\mu^-$ decays / LHCb Collaboration
A search for rare $B \rightarrow D \mu^+ \mu^-$ decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb$^{-1}$. No significant signals are observed in the non-resonant $\mu^+\mu^-$ modes, and upper limits of $\mathcal{B}(B^0 \rightarrow \overline{D}^0 \mu^+ \mu^-) < 5.1 \times 10^{-8}$, $\mathcal{B}(B^+ \rightarrow D_s^+ \mu^+ \mu^-) < 3.2 \times 10^{-8}$, $\mathcal{B}(B_s^0 \rightarrow \overline{D}^0 \mu^+ \mu^-) < 1.6 \times 10^{-7}$ and $f_c/f_u \cdot \mathcal{B}(B_c^+ \rightarrow D_s^+ \mu^+ \mu^-) < 9.6 \times 10^{-8}$ are set at the 95 % confidence level, where $f_c$ and $f_u$ are the fragmentation fractions of a $B$ meson with a $c$ and $u$ quark respectively in proton-proton collisions. [...]
arXiv:2308.06162; LHCb-PAPER-2022-048; CERN-EP-2023-121; LHCB-PAPER-2022-048.- Geneva : CERN, 2024-02-07 - 23 p. - Published in : JHEP 2402 (2024) 032 Fulltext: document - PDF; 2308.06162 - PDF; Related data file(s): ZIP;
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4.
$\Lambda_c^+$ 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: 2301.07010 - PDF; document - PDF; Related data file(s): ZIP;
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5.
Search for $CP$ violation in the phase space of $D^0 \to \pi^-\pi^+\pi^0$ decays with the energy test / LHCb Collaboration
A search for $CP$ violation in $D^0 \to \pi^-\pi^+\pi^0$ decays is reported, using $pp$ collision data collected by the LHCb experiment from 2015 to 2018 corresponding to an integrated luminosity of 6$fb^{-1}$. An unbinned model-independent approach provides sensitivity to local $CP$ violation within the two-dimensional phase space of the decay. [...]
arXiv:2306.12746; CERN-EP-2023-103; LHCb-PAPER-2023-005.- Geneva : CERN, 2023-09-20 - 24 p. Fulltext: document - PDF; 2306.12746 - PDF; erratum - PDF; Related data file(s): ZIP;
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6.
Study of the Bose-Einstein correlations of same-sign pions in proton-lead collisions / LHCb Collaboration
Correlations of same-sign charged particles are analysed using proton-lead collision data collected by the LHCb experiment at a nucleon-nucleon centre-of-mass energy of 5.02 $\textrm{TeV}$, corresponding to an integrated luminosity of 1.06 nb$^{-1}$. Bose-Einstein correlations are observed in the form of an enhancement of pair production for same-sign charged pions with a small four-momentum difference squared. [...]
arXiv:2306.09755; LHCb-PAPER-2023-002; CERN-EP-2023-096.- Geneva : CERN, 2023-09-26 - 29 p. - Published in : JHEP 2309 (2023) 172 Fulltext: 2306.09755 - PDF; Publication - PDF; document - PDF; Related data file(s): ZIP;
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7.
Evidence for the decays $B^{0}\rightarrow\bar{D}^{(*)0}\phi$ and updated measurements of the branching fractions of the $B^{0}_{s}\rightarrow\bar{D}^{(*)0}\phi$ decays / LHCb Collaboration
Evidence for the decays $B^{0}\rightarrow\bar{D}^{0}\phi$ and $B^{0} \rightarrow \bar{D}^{*0}\phi$ is reported with a significance of 3.6$\,\sigma$ and 4.3$\,\sigma$, respectively. The analysis employs $pp$ collision data at centre-of-mass energies $\sqrt{s}=7$, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 $\rm{fb}^{-1}$ [...]
arXiv:2306.02768; LHCb-PAPER-2023-003,CERN-EP-2023-077; CERN-EP-2023-077; LHCB-PAPER-2023-003; LHCB-PAPER-2023-003.- Geneva : CERN, 2023-10-20 - 26 p. - Published in : JHEP 2310 (2023) 123 Fulltext: 2306.02768 - PDF; document - PDF; Related data file(s): ZIP;
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8.
Associated production of prompt $J/\psi$ and $\mathit{\Upsilon}$ mesons in $pp$ collisions at $\sqrt{s}=13\,\mathrm{TeV}$ / LHCb Collaboration
The associated production of prompt $J/\psi$ and $\mathit{\mathit{\Upsilon}}$ mesons in $pp$ collisions at a centre-of-mass energy of $\sqrt{s}=13\,\mathrm{TeV}$ is studied using LHCb data, corresponding to an integrated luminosity of $4\,\mathrm{fb}^{-1}$. The measurement is performed for $J/\psi$ ($\mathit{\Upsilon}$) mesons with a transverse momentum $p_{\mathrm{T}}<10\,(30)\mathrm{GeV}/c$ in the rapidity range $2.0 < y < 4.5$. [...]
arXiv:2305.15580; LHCb-PAPER-2022-047; CERN-EP-2023-078.- Geneva : CERN, 2023-08-17 - 24 p. - Published in : JHEP 2308 (2023) 093 Fulltext: 2305.15580 - PDF; document - PDF; Related data file(s): ZIP;
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9.
Measurement of the mass difference and relative production rate of the $\Omega^-_b$ and $\Xi^-_b$ baryons / LHCb Collaboration
The mass difference between the $\Omega^-_b$ and $\Xi^-_b$ baryons is measured using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of $9 \, \textrm{fb}^{-1}$, and is found to be \begin{equation} m(\Omega^-_b)- m(\Xi^-_b) = 248.54 \pm 0.51 \textrm{(stat)} \pm 0.38 \textrm{(syst)} \, \textrm{MeV}/c^2. \end{equation} The mass of the $\Omega^-_b$ baryon is measured to be \begin{equation} m(\Omega^-_b)= 6045.9 \pm 0.5 \textrm{(stat)} \pm 0.6 \textrm{(syst)} \, \textrm{MeV}/c^2. [...]
arXiv:2305.15329; LHCb-PAPER-2022-053; CERN-EP-2023-086.- Geneva : CERN, 2023-09-01 - 23 p. - Published in : Phys. Rev. D 108 (2023) 052008 Fulltext: 2305.15329 - PDF; Publication - PDF; Related data file(s): ZIP;
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10.
GNN for Deep Full Event Interpretation and Hierarchical Reconstruction of Heavy-Hadron Decays in Proton–Proton Collisions / García Pardinas, Julián (INFN, Milan Bicocca ; Milan Bicocca U. ; CERN) ; Calvi, Marta (INFN, Milan Bicocca ; Milan Bicocca U.) ; Eschle, Jonas (Zurich U.) ; Mauri, Andrea (Imperial Coll., London) ; Meloni, Simone (INFN, Milan Bicocca ; Milan Bicocca U.) ; Mozzanica, Martina (INFN, Milan Bicocca ; Milan Bicocca U.) ; Serra, Nicola (Zurich U.)
The LHCb experiment at the Large Hadron Collider (LHC) is designed to perform high-precision measurements of heavy-hadron decays, which requires the collection of large data samples and a good understanding and suppression of multiple background sources. Both factors are challenged by a five-fold increase in the average number of proton-proton collisions per bunch crossing, corresponding to a change in the detector operation conditions for the LHCb Upgrade I phase, recently started. [...]
arXiv:2304.08610.- 2023-11-17 - 19 p. - Published in : Comput. Softw. Big Sci. 7 (2023) 12 Fulltext: document - PDF; 2304.08610 - PDF;
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CERN Document Server : Pronađeno je 200 zapisa   1 - 10slijedećikraj  idi na zapis:
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10 Meloni, S
12 Meloni, Sandro
202 Meloni, Simone
10 Meloni, s
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