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CERN Document Server 619 records found  1 - 10próximoend  jump to record: Search took 1.68 seconds. 
1.
The LHCb upgrade I / LHCb Collaboration
The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. [...]
arXiv:2305.10515; LHCb-DP-2022-002.- 2024-05-23 - 232 p. - Published in : JINST 19 (2024) P05065 Fulltext: document - PDF; 2305.10515 - PDF;
In : The Large Hadron Collider and The Experiments for Run 3
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2.
A survey of NbTi conductor status / Billinge, R ; Seyfert, P ; Turowski, Μ ; Vaccarone, R
CERN-PS-85-46-DL; CERN-LHC-Note-29.- Geneva : CERN, 1985 - 6 p. Fulltext: PDF;
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3.
Centrality determination in heavy-ion collisions with the LHCb detector / LHCb Collaboration
The centrality of heavy-ion collisions is directly related to the medium created therein. A procedure to determine the centrality of collisions with the LHCb detector is implemented for lead-lead collisions at $\sqrt{s_{\scriptscriptstyle\text{NN}}}=5\, \mathrm{TeV}$ and lead-neon fixed-target collisions at $\sqrt{s_{\scriptscriptstyle\text{NN}}}=69\, \mathrm{GeV}$. [...]
arXiv:2111.01607; CERN-LHCb-DP-2021-002.- 2022-05-05 - 31 p. - Published in : JINST 17 (2022) P05009 Fulltext: 2111.01607 - PDF; document - PDF;
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4.
Measurement of the Nuclear Modification Factor and Prompt Charged Particle Production in $p-Pb$ and $pp$ Collisions at $\sqrt {s_{NN}}$=5  TeV / LHCb Collaboration
The production of prompt charged particles in proton-lead collisions and in proton-proton collisions at the nucleon-nucleon centre-of-mass energy ${\sqrt{s_{\scriptscriptstyle\mathrm{NN}}}=5\,\mathrm{TeV}}$ is studied at LHCb as a function of pseudorapidity ($\eta$) and transverse momentum ($p_{\mathrm{T}}$) with respect to the proton beam direction. The nuclear modification factor for charged particles is determined as a function of $\eta$ between ${-4.8<\eta<-2.5}$ (backward region) and ${2.0<\eta<4.8}$ (forward region), and $p_{\mathrm{T}}$ between ${0.2< p_{\mathrm{T}}<8.0 \mathrm{GeV}/c}$. [...]
arXiv:2108.13115; LHCb-PAPER-2021-015; CERN-EP-2021-130; LHCB-PAPER-2021-015.- Geneva : CERN, 2022-04-07 - 12 p. - Published in : Phys. Rev. Lett. 128 (2022) 142004 Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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5.
Measurement of the $B^0_s\to\mu^+\mu^-$ decay properties and search for the $B^0\to\mu^+\mu^-$ and $B^0_s\to\mu^+\mu^-\gamma$ decays / LHCb Collaboration
An improved measurement of the decay $B^0_s\to\mu^+\mu^-$ and searches for the decays $B^0\to\mu^+\mu^-$ and $B^0_s\to\mu^+\mu^-\gamma$ are performed at the LHCb experiment using data collected in proton-proton collisions at $\sqrt{s} = 7,~8$ and $13$ TeV, corresponding to integrated luminosities of 1, 2 and 6 fb$^{-1}$, respectively. The $B^0_s\to\mu^+\mu^-$ branching fraction and effective lifetime are measured to be ${\mathcal{B}}(B^0_s\to\mu^+\mu^-)=\left(3.09^{+0.46+0.15}_{-0.43-0.11}\right)\times 10^{-9}$ and $\tau(B^0_s\to\mu^+\mu^-)=(2.07\pm 0.29\pm 0.03)$ ps, respectively, where the uncertainties include both statistical and systematic contributions. [...]
arXiv:2108.09283; CERN-EP-2021-133; LHCb-PAPER-2021-008; LHCB-PAPER-2021-008.- 2022-01-01 - 52 p. - Published in : Phys. Rev. D 105 (2022) 012010 Fulltext: PhysRevD.105.012010 - PDF; 2108.09283 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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6.
Analysis of neutral $B$-meson decays into two muons / LHCb Collaboration
Branching fraction and effective lifetime measurements of the rare decay $B^0_s\to\mu^+\mu^-$ and searches for the decays $B^0\to\mu^+\mu^-$ and $B^0_s\to\mu^+\mu^-\gamma$ are reported using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of $7$ TeV, $8$ TeV and $13$ TeV, corresponding to a luminosity of 9 fb$^{-1}$. The branching fraction ${\mathcal{B}}(B^0_s\to\mu^+\mu^-)=\left(3.09^{+0.46+0.15}_{-0.43-0.11}\right)\times 10^{-9}$ and the effective lifetime $\tau(B^0_s\to\mu^+\mu^-)=(2.07\pm 0.29\pm 0.03)$ are measured, where the first uncertainty is statistical and the second systematic. [...]
arXiv:2108.09284; CERN-CERN-EP-2021-132; LHCb-PAPER-2021-007; LHCB-PAPER-2021-007.- Geneva : CERN, 2022-01-25 - 20 p. - Published in : Phys. Rev. Lett. 128 (2022) 041801 Fulltext: 2108.09284 - PDF; PhysRevLett.128.041801 - PDF; Related data file(s): ZIP;
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7.
Search for the radiative $\Xi_b^-\to\Xi^-\gamma$ decay / LHCb Collaboration
The first search for the rare radiative decay $\Xi_{b}^{-} \to \Xi^{-} \gamma$ is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb$^{-1}$. The $\Xi_{b}^{-} \to \Xi^{-} J/\psi$ channel is used as normalization. [...]
arXiv:2108.07678; LHCb-PAPER-2021-017; CERN-EP-2021-128; LHCB-PAPER-2021-017.- 2022-01-14 - 20 p. - Published in : JHEP 2201 (2022) 069 Fulltext: 2108.07678 - PDF; document - PDF; Related data file(s): ZIP;
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8.
Evidence for a new structure in the $J/\psi p$ and $J/\psi \bar{p}$ systems in $B_s^0 \to J/\psi p \bar{p}$ decays / LHCb Collaboration
An amplitude analysis of flavour-untagged $B_s^0 \to J/\psi p \bar{p}$ decays is performed using a sample of $797\pm31$ decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 $\text{fb}^{-1}$. [...]
arXiv:2108.04720; LHCb-PAPER-2021-018; CERN-EP-2021-150; LHCB-PAPER-2021-018.- Geneva : CERN, 2022-02-07 - 11 p. - Published in : Phys. Rev. Lett. 128 (2022) 062001 Fulltext: LHCb-PAPER-2021-018_arxiv - PDF; PhysRevLett.128.062001 - PDF; 2108.04720 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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9.
$J/\psi$ photoproduction in Pb-Pb peripheral collisions at $\sqrt {s_{NN}}$= 5 TeV / LHCb Collaboration
The photo-production of $J/\psi$ mesons at low transverse momentum is studied in peripheral lead-lead collisions collected by the LHCb experiment at a centre-of-mass energy per nucleon pair of 5 TeV, corresponding to an integrated luminosity of 210 $\mathrm{\mu b}^{-1}$. The $J/\psi$ candidates are reconstructed through the prompt decay into two muons of opposite charge in the rapidity region of $2.0 < y <4.5$. [...]
arXiv:2108.02681; LHCb-PAPER-2020-043; CERN-EP-2021-122; LHCB-PAPER-2020-043.- Geneva : CERN, 2022-03-03 - 10 p. - Published in : Phys. Rev. C 105 (2022) L032201 Fulltext: LHCb-PAPER-2020-043 - PDF; 2108.02681 - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
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10.
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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Veja também: nomes de autores similares
228 Seyfert, P
505 Seyfert, Paul
2 Seyfert, Peter
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