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CERN Document Server 找到 2,051 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 8.72 秒. 
1.
(100)
Soft-Dielectron Excess in Proton-Proton Collisions at $\sqrt{s}$ = 13 TeV / ALICE Collaboration
A measurement of dielectron production in proton-proton (pp) collisions at $\sqrt{s}$ = 13 TeV, recorded with the ALICE detector at the CERN LHC, is presented in this Letter. The data set was recorded with a reduced magnetic solenoid field. [...]
arXiv:2005.14522; CERN-EP-2020-095.- Geneva : CERN, 2021-07-23 - 13 p. - Published in : Phys. Rev. Lett. 127 (2021) 042302 Draft (restricted): PDF; Fulltext: PDF; Fulltext from publisher: PDF;
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2.
(91)
Charm-quark fragmentation fractions and production cross section at midrapidity in pp collisions at the LHC / ALICE Collaboration
Recent $p_{\rm T}$-integrated cross section measurements of the ground-state charm mesons and baryons, $\mathrm{D^0}$, $\mathrm{D^+}$, $\mathrm{D_s^+}$, $\Lambda_\mathrm{c}^+$, and $\Xi_\mathrm{c}^0$, are used to evaluate the charm fragmentation fractions and production cross section per unit of rapidity at midrapidity ($|y|<0.5$), in pp collisions at $\sqrt{s} = 5.02$ TeV at the LHC. The latter is $\mathrm{d}\sigma^{\mathrm{c\overline{c}}}/\mathrm{d} y|_{|y| < 0.5}=1165\pm 44(\mathrm{stat})^{+134}_{-101}(\mathrm{syst}) \ \mu\mathrm{b}$. [...]
arXiv:2105.06335; CERN-EP-2021-088.- Geneva : CERN, 2022-01-01 - 14 p. - Published in : Phys. Rev. D 105 (2022) L011103 Draft (restricted): PDF; Fulltext: PhysRevD.105.L011103 - PDF; 2105.06335 - PDF;
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3.
(80)
Production of K$^{*}(892)^{0}$ and $\phi(1020)$ in pp and Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
The production of K$^{*}(892)^{0}$ and $\phi(1020)$ mesons in proton-proton (pp) and lead-lead (Pb$-$Pb) collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV has been measured using the ALICE detector at the Large Hadron Collider (LHC). The transverse momentum ($p_{\mathrm{T}}$) distributions of K$^{*}(892)^{0}$ and $\phi(1020)$ mesons have been measured at mid-rapidity $(|y|<0.5)$ up to $p_{\mathrm{T}}$ $=$ 20 GeV$/c$ in inelastic pp collisions and for several Pb$-$Pb collision centralities. [...]
arXiv:2106.13113; CERN-EP-2021-101.- Geneva : CERN, 2022-09-14 - 20 p. - Published in : Phys. Rev. C 106 (2022) 034907 Draft (restricted): PDF; Fulltext: 2106.13113 - PDF; PhysRevC.106.034907 - PDF;
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4.
(80)
Production of $\Lambda$ and $K^0_s$ in jets in p–Pb collisions at $\sqrt {s_{NN}}$=5.02 TeV and pp collisions at $\sqrt {s}$=7 TeV / ALICE Collaboration
The production of $\Lambda$ baryons and ${\rm K}^{0}_{\rm S}$ mesons (${\rm V}^{0}$ particles) was measured in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5$ TeV and pp collisions at $\sqrt{s} = 7$ TeV with ALICE at the LHC. The production of these strange particles is studied separately for particles associated with hard scatterings and the underlying event to shed light on the baryon-to-meson ratio enhancement observed at intermediate transverse momentum ($p_{\rm T}$) in high multiplicity pp and p-Pb collisions. [...]
arXiv:2105.04890; CERN-EP-2021-048.- Geneva : CERN, 2022-04-10 - 15 p. - Published in : Phys. Lett. B 827 (2022) 136984 Draft (restricted): PDF; Fulltext: 1-s2.0-S0370269322001186-main - PDF; 2105.04890 - PDF;
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5.
(80)
Measurement of Prompt D$^{0}$, $\Lambda_{c}^{+}$, and $\Sigma_{c}^{0,++}$(2455) Production in Proton–Proton Collisions at $\sqrt s$ = 13  TeV / ALICE Collaboration
The $p_{\rm T}$-differential production cross sections of prompt D$^{0}$, $\Lambda_{\rm c}^{+}$, and $\Sigma_{\rm c}^{0,++}(2455)$ charmed hadrons are measured at midrapidity ($|y| < 0.5$) in pp collisions at $\sqrt{s} = 13$ TeV. This is the first measurement of $\Sigma_{\rm c}^{0,++}$ production in hadronic collisions. [...]
arXiv:2106.08278; CERN-EP-2021-103.- Geneva : CERN, 2022-01-05 - 13 p. - Published in : Phys. Rev. Lett. 128 (2022) 012001 Draft (restricted): PDF; Fulltext: 2106.08278 - PDF; PhysRevLett.128.012001 - PDF;
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6.
(80)
Measurement of the groomed jet radius and momentum splitting fraction in pp and Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
This article presents groomed jet substructure measurements in pp and Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV with the ALICE detector. The Soft Drop grooming algorithm provides access to the hard parton splittings inside a jet by removing soft wide-angle radiation. [...]
arXiv:2107.12984; CERN-EP-2021-151.- Geneva : CERN, 2022-03-07 - 18 p. - Published in : Phys. Rev. Lett. 128 (2022) 102001 Draft (restricted): PDF; Fulltext: PhysRevLett.128.102001 - PDF; 2107.12984 - PDF;
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7.
(79)
Measurement of prompt $\rm{D_{s}^{+}}$-meson production and azimuthal anisotropy in Pb--Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
The production yield and angular anisotropy of prompt ${D_s^+}$ mesons were measured as a function of transverse momentum ($p_{ T}$) in Pb-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{ NN}} = 5.02$ TeV collected with the ALICE detector at the LHC. ${D_s^+}$ mesons and their charge conjugates were reconstructed at midrapidity ($|y|<0.5$) from their hadronic decay channel ${D_s^+ \to \phi \pi^+}$, with ${\phi \to K^-K^+}$, in the $p_{ T}$ intervals $210$ GeV/$c$, the measured ${D_s^+}$-meson nuclear modification factor $R_{ AA}$ is consistent with the one of non-strange D mesons within uncertainties, while at lower $p_{ T}$ a hint for a ${D_s^+}$-meson $R_{ AA}$ larger than that of non-strange D mesons is seen. [...]
arXiv:2110.10006; CERN-EP-2021-187.- Geneva : CERN, 2022-04-10 - 29 p. - Published in : Phys. Lett. B 827 (2022) 136986 Draft (restricted): PDF; Fulltext: PDF; Fulltext from publisher: PDF;
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8.
(79)
Measurement of the Cross Sections of $\Xi^0_{c}$ and $\Xi^+_{c}$ Baryons and of the Branching-Fraction Ratio BR($\Xi^0_{c} \rightarrow \Xi^-{e}^+\nu_{ e}$)/BR($\Xi^0_{c} \rightarrow \Xi^-\pi^+$) in pp collisions at 13 TeV / ALICE Collaboration
The $p_{\rm T}$-differential cross sections of prompt charm-strange baryons $\rm \Xi_{c}^{0}$ and $\rm \Xi_{c}^{+}$ were measured at midrapidity (|y| < 0.5) in proton–proton (pp) collisions at a centre-of-mass energy $\sqrt{s}$ = 13 TeV with the ALICE detector at the LHC. The $\rm \Xi_{c}^{0}$ baryon was reconstructed via both the semileptonic decay ($\rm \Xi_{c}^{0} \rightarrow \Xi^{-}e^+ \nu$) and the hadronic decay ($\rm \Xi_{c}^{0} \rightarrow \Xi^{-} \pi^{+}$) channels. [...]
arXiv:2105.05187; CERN-EP-2021-084.- Geneva : CERN, 2021-12-28 - 17 p. - Published in : Phys. Rev. Lett. 127 (2021) 272001 Draft (restricted): PDF; Fulltext: Supplemental Material - PDF; PhysRevLett.127.272001 - PDF; 2105.05187 - PDF;
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9.
(79)
Polarization of $\Lambda$ and $\overline{\Lambda}$ hyperons along the beam direction in Pb–Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
The polarization of the $\Lambda$ and $\overline{\Lambda}$ hyperons along the beam ($z$) direction, $P_{z}$, has been measured in Pb–Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV recorded with ALICE at the Large Hadron Collider (LHC). The largest contribution to $P_z$ comes from elliptic flow induced vorticity and can be characterized by the second Fourier sine coefficient $P_{z,s2}$ = $⟨P_z sin(2 \varphi − 2 \Psi_2 )⟩$, where $\varphi$ is the hyperon azimuthal emission angle, and $\Psi_2$ is the elliptic flow plane angle. [...]
arXiv:2107.11183; CERN-EP-2021-148.- Geneva : CERN, 2022-04-29 - 18 p. - Published in : Phys. Rev. Lett. 128 (2022) 172005 Draft (restricted): PDF; Fulltext: PDF;
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10.
(79)
$\Lambda^+_e$ production in $pp$ and in $p$-Pb collisions at $\sqrt {s_{NN}}$=5.02 TeV / ALICE Collaboration
The production cross section of prompt $\Lambda^{+}_{\rm c}$ charmed baryons was measured with the ALICE detector at the LHC at midrapidity in proton-proton (pp) and proton-lead (p-Pb) collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_{\rm NN}} = 5.02$ TeV. The $\Lambda^{+}_{\rm c}$ and $\overline{\Lambda}^{-}_{\rm c}$ baryons were reconstructed in the hadronic decay channels $\Lambda^{+}_{\rm c} \rightarrow {\rm p}{\rm K}^{-}\pi{+}$ and $\Lambda^{+}_{\rm c} \rightarrow {\rm p}{\rm K}^{0}_{\rm S}$ and respective charge conjugates. [...]
arXiv:2011.06079; CERN-EP-2020-218.- Geneva : CERN, 2021-11-09 - 26 p. - Published in : Phys. Rev. C 104 (2021) 054905 Draft (restricted): PDF; Fulltext: PhysRevC.104.054905 - PDF; 2011.06079 - PDF;
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