Nuclear modification factor of nonphotonic electrons in heavy-ion collisions, and the heavy-flavor baryon-to-meson ratio

2009 ◽  
Vol 79 (6) ◽  
Author(s):  
Yongseok Oh ◽  
Che Ming Ko
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Heavy Flavor ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Ion Collisions ◽  
Modification Factor

MEASUREMENT OF THE MULTI-HADRON DECAYS OF ω, $K^0_S$ AND η-MESONS IN HEAVY ION COLLISIONS AT $\sqrt{^SNN} = 200\ {\rm GeV}$ IN THE PHENIX EXPERIMENT AT RHIC

2007 ◽  
Vol 16 (07n08) ◽  
pp. 1864-1869 ◽  
Author(s):  
◽  
V. RYABOV
Keyword(s):  
Heavy Ion Collisions ◽  
Meson Production ◽  
Heavy Ion ◽  
Hadronic Decay ◽  
Decay Channels ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Phenix Experiment ◽  
Ion Collisions ◽  
Modification Factor

The PHENIX experiment at RHIC measured ω, η and [Formula: see text]-meson production at high pT in p + p, d + Au and Au + Au collisions at [Formula: see text]. Measurements performed in different hadronic decay channels give consistent results. The measured ratios of all three mesons to π0 are found to be flat as a function of pT in p + p collisions and equal to ω/π0 = 0.81 ± 0.02 ± 0.07, η/π0 = 0.48 ± 0.02 ± 0.02 and [Formula: see text]. Nuclear modification factor measured for ω-mesons in central Au + Au collisions is RAA = 0.4 ± 0.15.

scholarly journals Measurement of Open Heavy-Flavour Production in pp and p–Pb Collisions with ALICE at the LHC

2018 ◽  
Vol 46 ◽  
pp. 1860019
Author(s):  
Renu Bala
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Heavy Ion Collisions ◽  
D Mesons ◽  
Production Cross ◽  
Hadron Collider ◽  
Heavy Ion ◽  
Nuclear Modification Factor ◽  
Ion Collisions ◽  
Modification Factor

The Large Hadron Collider at CERN allows us to study heavy-ion collisions at an un- precedented energy. ALICE, A Large Ion Collider Experiment, is the experiment ded- icated to the investigation of heavy-ion collisions. In this contribution, recent open heavy-flavour results from pp collisions at [Formula: see text]= 5.02, 7, 8 and 13 TeV and p–Pb collisions at [Formula: see text] = 5.02 TeV, collected with the ALICE detector during the LHC Run-1 and Run-2 are presented. The results include the production cross section, nuclear modification factor and multiplicity dependence studies of production of D mesons and electrons from heavy-flavour hadron decays at mid-rapidity and of muons from heavy-flavour hadron decays at forward rapidity. Charm production was measured down to [Formula: see text] = 0 GeV/[Formula: see text] in pp and p–Pb collisions. Recent measurements of the production cross section of heavy charmed baryons such as [Formula: see text] (in pp and p–Pb) and [Formula: see text] (in pp) are discussed. The results are compared with theoretical model predictions.

scholarly journals Jet quenching from heavy to light ion collisions

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
B. G. Zakharov
Keyword(s):  
Quark Gluon Plasma ◽  
Reasonable Agreement ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Jet Quenching ◽  
Light Nuclei ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Ion Collisions ◽  
Modification Factor

Abstract We perform an analysis of jet quenching in heavy and light ion collisions for scenarios without and with quark-gluon plasma formation in pp collisions. We find that the results for these scenarios are very similar, and both of them are in reasonable agreement with data for heavy ion collisions. However, their results become differ significantly for light nuclei. Using the parameters fitted to heavy ion data on the nuclear modification factor RAA, we make predictions for 0.2 and 7 TeV O+O collisions that can be verified by future experiments at RHIC and the LHC.

scholarly journals Relativistic Langevin dynamics: charm versus beauty

2020 ◽  
Vol 80 (12) ◽  
Author(s):  
Shuang Li ◽  
Wei Xiong ◽  
Renzhuo Wan
Keyword(s):  
Energy Loss ◽  
Experimental Tests ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Azimuthal Anisotropy ◽  
Mass Hierarchy ◽  
Heavy Flavor ◽  
Nuclear Modification Factor ◽  
Ion Collisions ◽  
Modification Factor

AbstractThe production of heavy quarks (charm and beauty) provides unique insights into the transport properties of the Quark–Gluon Plasma (QGP) in heavy-ion collisions. Experimentally, the nuclear modification factor $$R_{\mathrm{AA}}$$ R AA and the azimuthal anisotropy coefficient $$v_{\mathrm{2}}$$ v 2 of heavy-flavor mesons are powerful observables to study the medium-related effects, such as energy loss and collectivity, on the heavy quark propagation through the QGP evolution. The latest measurements of the prompt and non-prompt open heavy-flavor hadrons allow a systematic comparison of the transport behaviors probed by charm and beauty quarks. In this work we make such an attempt utilizing our recently developed framework. By performing a quantitative investigation of $$R_{\mathrm{AA}}$$ R AA and $$v_{\mathrm{2}}$$ v 2 , it is found that both charm and beauty quarks are efficient probes to capture the dynamical features of QGP, in particular the resulting mass hierarchy for the energy loss and azimuthal anisotropy, which are well inherited by the various D/B-meson species. Moreover, our calculations can describe simultaneously $$R_{\mathrm{AA}}$$ R AA and $$v_{\mathrm{2}}$$ v 2 data for the prompt and non-prompt $$D^{0}$$ D 0 mesons in central ($$0-10\%$$ 0 - 10 % ) and semi-central ($$30-50\%$$ 30 - 50 % ) Pb–Pb collisions at $$\sqrt{s_{\mathrm{NN}}}=5.02~{\mathrm{TeV}}$$ s NN = 5.02 TeV . The predictions for B-meson observables for upcoming experimental tests are also made down to the low momentum region.

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