CERN Accelerating science

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1.
Measurement of prompt D+s-meson production and azimuthal anisotropy in Pb--Pb collisions at sNN=5.02 TeV / ALICE Collaboration
The production yield and angular anisotropy of prompt D+s mesons were measured as a function of transverse momentum (pT) in Pb-Pb collisions at a centre-of-mass energy per nucleon pair sNN=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+sϕπ+, with ϕKK+, in the pT intervals 210 GeV/c, the measured D+s-meson nuclear modification factor RAA is consistent with the one of non-strange D mesons within uncertainties, while at lower pT a hint for a D+s-meson RAA 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;
2.
Production of Λ and K0s in jets in p–Pb collisions at sNN=5.02 TeV and pp collisions at s=7 TeV / ALICE Collaboration
The production of Λ baryons and K0S mesons (V0 particles) was measured in p-Pb collisions at sNN=5 TeV and pp collisions at 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 (pT) 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: 2105.04890 - PDF; 1-s2.0-S0370269322001186-main - PDF;
3.
Measurement of the Cross Sections of Ξ0c and Ξ+c Baryons and of the Branching-Fraction Ratio BR(Ξ0cΞe+νe)/BR(Ξ0cΞπ+) in pp collisions at 13 TeV / ALICE Collaboration
The pT-differential cross sections of prompt charm-strange baryons Ξ0c and Ξ+c were measured at midrapidity (|y| < 0.5) in proton–proton (pp) collisions at a centre-of-mass energy s = 13 TeV with the ALICE detector at the LHC. The Ξ0c baryon was reconstructed via both the semileptonic decay (Ξ0cΞe+ν) and the hadronic decay (Ξ0cΞπ+) 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: 2105.05187 - PDF; PhysRevLett.127.272001 - PDF; Supplemental Material - PDF;
4.
Charm-quark fragmentation fractions and production cross section at midrapidity in pp collisions at the LHC / ALICE Collaboration
Recent pT-integrated cross section measurements of the ground-state charm mesons and baryons, D0, D+, D+s, Λ+c, and Ξ0c, 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 s=5.02 TeV at the LHC. The latter is dσc¯c/dy||y|<0.5=1165±44(stat)+134101(syst) μb. [...]
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: 2105.06335 - PDF; PhysRevD.105.L011103 - PDF;
5.
Measurement of Prompt D0, Λ+c, and Σ0,++c(2455) Production in Proton–Proton Collisions at s = 13  TeV / ALICE Collaboration
The pT-differential production cross sections of prompt D0, Λ+c, and Σ0,++c(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at s=13 TeV. This is the first measurement of Σ0,++c 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;
6.
Measurement of the groomed jet radius and momentum splitting fraction in pp and PbPb collisions at sNN=5.02 TeV / ALICE Collaboration
This article presents groomed jet substructure measurements in pp and PbPb collisions at sNN=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: 2107.12984 - PDF; PhysRevLett.128.102001 - PDF;
7.
Production of K(892)0 and ϕ(1020) in pp and PbPb collisions at sNN=5.02 TeV / ALICE Collaboration
The production of K(892)0 and ϕ(1020) mesons in proton-proton (pp) and lead-lead (PbPb) collisions at sNN=5.02 TeV has been measured using the ALICE detector at the Large Hadron Collider (LHC). The transverse momentum (pT) distributions of K(892)0 and ϕ(1020) mesons have been measured at mid-rapidity (|y|<0.5) up to pT = 20 GeV/c in inelastic pp collisions and for several PbPb 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;
8.
Inclusive heavy-flavour production at central and forward rapidity in Xe-Xe collisions at sNN=5.44$ TeV / ALICE Collaboration
The first measurements of the production of muons and electrons from heavy-flavour hadron decays in Xe--Xe collisions at sNN = 5.44 TeV, using the ALICE detector at the LHC, are reported. The measurement of the nuclear modification factor RAA is performed as a function of transverse momentum \pT in several centrality classes at forward rapidity (2.5<y<4) and midrapidity (|y|<0.8) for muons and electrons from heavy-flavour hadron decays, respectively. [...]
arXiv:2011.06970; CERN-EP-2020-208.- Geneva : CERN, 2021-06-04 - 16 p. - Published in : Phys. Lett. B 819 (2021) 136437 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;
9.
Λ+c production and baryon-to-meson ratios in pp and p-Pb collisions at sNN = 5.02 TeV at the LHC / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Adolfsson, Jonatan (Lund U.) ; 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) et al. /ALICE
The prompt production of the charmed baryon Λ+c and the Λ+c/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at sNN = 5.02 TeV. These new measurements show a clear decrease of the Λ+c /D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2 < pT < 12 GeV/c, exhibiting similarities with the light-flavour baryon-to-meson ratios p/π and Λ/KS. [...]
arXiv:2011.06078; CERN-EP-2020-217.- Geneva : CERN, 2021-11-09 - 13 p. - Published in : Phys. Rev. Lett. 127 (2021) 202301 Draft (restricted): PDF; Fulltext: PDF;
10.
Search for lepton number and flavour violation in K+ and π0 decays / NA62 Collaboration
Searches for the lepton number violating K+πμ+e+ decay and the lepton flavour violating K+π+μe+ and π0μe+ decays are reported using data collected by the NA62 experiment at CERN in 20172018. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level: B(K+πμ+e+) <4.2×1011, B(K+π+μe+) <6.6×1011 and B(π0μe+) <3.2×1010. [...]
arXiv:2105.06759; CERN-EP-2021-090.- Geneva : CERN, 2021-09-24 - 8 p. - Published in : Phys. Rev. Lett. 127 (2021) 131802 Draft (restricted): PDF; Fulltext: 2105.06759 - PDF; CERN-EP-2021-090 - PDF; Publication - PDF; Fulltext from publisher: PDF;

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