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CERN Document Server 476 notices trouvées  1 - 10suivantfin  aller vers la notice: La recherche a duré 0.67 secondes. 
1.
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;
2.
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;
3.
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;
4.
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;
5.
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;
6.
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;
7.
$J/\psi$ 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;
8.
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;
9.
Observation of a $\Lambda_b^0-\overline{\Lambda}_b^0$ production asymmetry in proton-proton collisions at $\sqrt{s} = 7 \textrm{ and } 8\,\textrm{TeV}$ / LHCb Collaboration
This article presents differential measurements of the asymmetry between $\Lambda_b^0$ and $\overline{\Lambda}_b^0$ baryon production rates in proton-proton collisions at centre-of-mass energies of $\sqrt{s}=7$ and $8\,\textrm{TeV}$ collected with the LHCb experiment, corresponding to an integrated luminosity of $3\,\textrm{fb}^{-1}$. The $\Lambda_b^0$ baryons are reconstructed through the inclusive semileptonic decay $\Lambda_b^0\rightarrow\Lambda_c^+\mu^-\overline{\nu}_{\mu}X$. [...]
arXiv:2107.09593; LHCb-PAPER-2021-016; CERN-EP-2021-121; LHCB-PAPER-2021-016.- 2021-10-07 - 38 p. - Published in : JHEP 2110 (2021) 060 Fulltext: Fulltext from publisher - PDF; 2107.09593 - PDF; document - PDF; Preprint: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Previous draft version
10.
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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Voir aussi: noms d'auteurs similaires
50 Griffith, P
1 Griffith, P A
1 Griffith, P N
479 Griffith, Peter
4 Griffith, Peter Noel
1 Griffith, Phillip
2 Griffith, Phillip A
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