CERN Accelerating science

CERN Document Server 947 record trovati  1 - 10successivofine  salta al record: La ricerca ha impiegato 0.58 secondi. 
1.
Gaia Data Release 3 - Stellar multiplicity, a teaser for the hidden treasure / Gaia Collaboration
Context.TheGaiaDR3 catalogue contains, for the first time, about 800 000 solutions with either orbital elements or trend parameters for astrometric, spectroscopic, and eclipsing binaries, and combinations of these three.Aims.With this paper, we aim to illustrate the huge potential of this large non-single-star catalogue.Methods.Using the orbital solutions and models of the binaries, we have built a catalogue of tens of thousands of stellar masses or lower limits thereof, some with consistent flux ratios. Properties concerning the completeness of the binary catalogues are discussed, statistical features of the orbital elements are explained, and a comparison with other catalogues is performed.Results.Illustrative applications are proposed for binaries across the Hertzsprung-Russell Diagram (HRD). [...]
arXiv:2206.05595.- 2023-06 - 57 p. - Published in : Astron. Astrophys. 674 (2023) A34 Fulltext: PDF;
2.
Light neutral-meson production in pp collisions at ss = 13 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
The momentum-differential invariant cross~sections of π0π0 and ηη mesons are reported for pp collisions at s=13s=13 TeV at midrapidity (|y|<0.8|y|<0.8). The measurement is performed in a broad transverse-momentum range of 0.2<pT<2000.2<pT<200 GeV/cc and 0.4<pT<600.4<pT<60 GeV/cc for the π0π0 and ηη, respectively, extending the pTpT coverage of previous measurements. [...]
arXiv:2411.09560; CERN-EP-2024-304.- Geneva : CERN, 2024 - 39 p. Draft (restricted): PDF; Fulltext: PDF;
3.
Measurement of ωω meson production in pp collisions at ss = 13 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) et al.
The pTpT-differential cross section of ωω meson production in pp collisions at ss = 13 TeV at midrapidity (|y|<0.5|y|<0.5) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of 1.6<pT<501.6<pT<50 GeV/cc. The meson is reconstructed via the ωπ+ππ0ωπ+ππ0 decay channel. [...]
arXiv:2411.09432; CERN-EP-2024-303.- Geneva : CERN, 2024 - 26 p. Draft (restricted): PDF; Fulltext: PDF;
4.
Studying charm hadronisation into baryons with azimuthal correlations of Λ+cΛ+c with charged particles in pp collisions at ss = 13 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
The distribution of angular correlations between prompt charm hadrons and primary charged particles in pp collisions is sensitive to the charm-quark hadronisation process. In this letter, charm-baryon correlations are measured for the first time by studying the azimuthal-angle difference between charged particles and prompt Λ+cΛ+c baryons produced in pp collisions at a centre-of-mass energy s=13s=13 TeV, with the ALICE detector. [...]
arXiv:2411.10104; CERN-EP-2024-302.- Geneva : CERN, 2024 - 28 p. Draft (restricted): PDF; Fulltext: PDF;
5.
Observation of partonic flow in proton–proton and proton–nucleus collisions / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al. /ALICE
Quantum Chromodynamics predicts a phase transition from ordinary hadronic matter to the quark–gluon plasma (QGP) at high temperatures and energy densities, where quarks and gluons (partons) are not confined within hadrons. The QGP is generated in ultrarelativistic heavy-ion collisions. [...]
arXiv:2411.09323; CERN-EP-2024-299.- Geneva : CERN, 2024 - 22 p. Draft (restricted): PDF; Fulltext: PDF;
6.
System size and energy dependence of the mean transverse momentum fluctuations at the LHC / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
Event-by-event fluctuations of the event-wise mean transverse momentum, pTpT, of charged particles produced in proton-proton (pp) collisions at ss = 5.02 TeV, Xe-Xe collisions at sNNsNN = 5.44 TeV, and Pb-Pb collisions at sNNsNN = 5.02 TeV are studied using the ALICE detector based on the integral correlator ΔpTΔpTΔpTΔpT. The correlator strength is found to decrease monotonically with increasing produced charged-particle multiplicity measured at mid-rapidity in all three systems. [...]
arXiv:2411.09334; CERN-EP-2024-297.- Geneva : CERN, 2024 - 28 p. Draft (restricted): PDF; Fulltext: PDF;
7.
Direct-photon production in inelastic and high-multiplicity proton-proton collisions at s=s= 13 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al. /ALICE
In this letter, we present the first measurement of direct photons at the transverse momentum of 1<pT<61<pT<6 GeV/cc at midrapidity |η|<0.8|η|<0.8 in inelastic and high-multiplicity proton-proton collisions at a centre-of-mass energy of ss = 13 TeV. The fraction of virtual direct photons in the inclusive virtual photon spectrum is obtained from a fit to the dielectron invariant mass spectrum. [...]
arXiv:2411.14366; CERN-EP-2024-295.- Geneva : CERN, 2024 - 27 p. Draft (restricted): PDF; Fulltext: PDF;
8.
Proton emission in ultraperipheral Pb-Pb collisions at sNNsNN =5.02 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al. /ALICE
The first measurements of proton emission accompanied by neutron emission in the electromagnetic dissociation (EMD) of 208208Pb nuclei in the ALICE experiment at the LHC are presented. The EMD protons and neutrons emitted at very forward rapidities are detected by the proton and neutron Zero Degree Calorimeters of the ALICE experiment. [...]
arXiv:2411.07058; CERN-EP-2024-288.- Geneva : CERN, 2024 - 25 p. Draft (restricted): PDF; Fulltext: PDF;
9.
Medium-induced modification of groomed and ungroomed jet mass and angularities in Pb-Pb collisions at sNN=5.02sNN=5.02 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al. /ALICE
The ALICE Collaboration presents a new suite of jet substructure measurements in Pb-Pb and pp collisions at a center-of-mass energy per nucleon pair sNN=5.02sNN=5.02 TeV. These measurements provide access to the internal structure of jets via the momentum and angle of their constituents, probing how the quark--gluon plasma modifies jets, an effect known as jet quenching. [...]
arXiv:2411.03106; CERN-EP-2024-283.- Geneva : CERN, 2024 - 20 p. Draft (restricted): PDF; Fulltext: PDF;
10.
Measurements of differential two-particle number and transverse momentum correlation functions in pp collisions at ss = 13 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
Differential two-particle normalized cumulants (R2R2) and transverse momentum correlations (P2P2) are measured as a function of the relative pseudorapidity and azimuthal angle difference (Δη,Δφ)(Δη,Δφ) of charged particle pairs in minimum bias pp collisions at ss = 13 TeV. The measurements use charged hadrons in the pseudorapidity region of |η|<0.8|η|<0.8 and the transverse momentum range 0.2 <pT<<pT< 2.0 GeV/cGeV/c in order to focus on soft multiparticle interactions and to complement prior measurements of these correlation functions in p-Pb and Pb-Pb collisions. [...]
arXiv:2411.07059; CERN-EP-2024-271.- Geneva : CERN, 2024 - 30 p. Draft (restricted): PDF; Fulltext: PDF;

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