GSI Helmholtz Centre for Heavy Ion Research

GSI Repository
Not a member yet
    280642 research outputs found

    Studies of exclusive proton-proton reactions with CBM at FAIR

    No full text

    Measurement of the Born cross section for e+eηhce^{+} e^{−} \rightarrow \eta h_{c} at center-of-mass energies between 4.1 and 4.6 GeV

    No full text

    Search for ηc(2S)ppˉ\eta_{c}(2S)\rightarrow p\bar{p} and branching fraction measurements of χcjppˉ\chi_{cj}\rightarrow p\bar{p} via Ψ(2S)\Psi (2S) radiative decays

    No full text

    Search for a 1+1^{−\, +} molecular state via e+eγDs+Ds1(2536)+c.c.e^+ e^− → γ D_s^+ D_{s1}^− ( 2536 ) + c . c .

    No full text

    Measurements of branching fractions of D0K3π+2π,D0K2π+π2π0D^0 → K^− 3 π^+ 2 π^− , D^0 → K^− 2 π^+ π^− 2 π^0 , and D+K3π+ππ0D^+ → K^− 3 π^+ π^− π^0

    No full text

    Evidence of doubly OZI-suppressed decay ηcωϕη_c → ω ϕ in the radiative decay J/ψγηcJ / ψ → γ η_c

    No full text

    First measurement of symmetric cumulants of hexagonal flow harmonics in Pb-Pb collisions at sNN\sqrt{s_{NN}}=5.02 TeV

    No full text
    Correlations between event-by-event fluctuations of anisotropic flow harmonics are measured in Pb-Pb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV, as recorded by the ALICE detector at the LHC. This study presents correlations up to the hexagonal flow harmonic v6, which was measured for the first time. The magnitudes of these higher-order correlations are found to vary as a function of collision centrality and harmonic order. These measurements are compared to viscous hydrodynamic model calculations with EKRT initial conditions and to the iEBE-VISHNU model with TRENTo initial conditions. The observed discrepancies between the data and the model calculations vary depending on the harmonic combinations. Due to the sensitivity of model parameters estimated with Bayesian analyses to these higher-order observables, the results presented in this work provide new and independent constraints on the initial conditions and transport properties in theoretical models used to describe the system created in heavy-ion collisions

    Measurement of ω meson production in pp collisions at s \sqrt{s} = 13 TeV

    No full text
    The pT_{T}-differential cross section of ω meson production in pp collisions at s \sqrt{s} = 13 TeV at midrapidity (|y| < 0.5) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of 1.6 < pT_{T}< 50 GeV/c. The meson is reconstructed via the ω → π+^{+}π^{−}π0^{0} decay channel. The results are compared with various theoretical calculations: PYTHIA8.2 with the Monash 2013 tune overestimates the data by up to 50%, whereas good agreement is observed with Next-to-Leading Order (NLO) calculations incorporating ω fragmentation using a broken SU(3) model. The ω/π0^{0} ratio is presented and compared with theoretical calculations and the available measurements at lower collision energies. The presented data triples the pT_{T} ranges of previously available measurements. A constant ratio of Cω/π0^{ω/π0} = 0.578 ± 0.006 (stat.) ± 0.013 (syst.) is found above a transverse momentum of 4 GeV/c, which is in agreement with previous findings at lower collision energies within the systematic and statistical uncertainties.[graphic not available: see fulltext

    1,695

    full texts

    280,642

    metadata records
    Updated in last 30 days.
    GSI Repository
    Access Repository Dashboard
    Do you manage Open Research Online? Become a CORE Member to access insider analytics, issue reports and manage access to outputs from your repository in the CORE Repository Dashboard! 👇