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 Production cross section of neutron-rich calcium isotopes in heavy ion collisions

2015 ◽  
Vol 39 (4) ◽  
pp. 044103 ◽  
Author(s):  
Dong-Hong Zhang ◽  
Wen-Jie Xie ◽  
Jun Su ◽  
Feng-Shou Zhang
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Heavy Ion Collisions ◽  
Production Cross ◽  
Heavy Ion ◽  
Calcium Isotopes ◽  
Ion Collisions

scholarly journals Production of exotic charmonium in heavy ion collisions

2020 ◽  
Vol 235 ◽  
pp. 02005
Author(s):  
F. S. Navarra
Keyword(s):  
Gas Phase ◽  
Cross Section ◽  
Heavy Ion Collisions ◽  
Production Cross ◽  
Short Review ◽  
Heavy Ion ◽  
Charmonium Production ◽  
Ion Collisions ◽  
Hadron Gas ◽  
Multiquark States

We present a short review of exotic charmonium production in heavy ion collisions. We discuss predictions for the production cross section of several of these states in ultra-peripheral Pb-Pb collisions at the LHC. The experimental study of these processes is feasible and can be used to yield valuable information about the structure of multiquark states. We also address X(3872) production in central Pb-Pb collisions. In particular, we discuss the suppression of X(3872) during the hadron gas phase. Finally, we comment on the very recent CMS data on the X(3872) yield in Pb-Pb collisions. the very recent CMS data on the X(3872) yield in Pb-Pb collisions.

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 LONG-RANGE RAPIDITY CORRELATIONS IN HEAVY-LIGHT ION COLLISIONS

2014 ◽  
Vol 25 ◽  
pp. 1460023 ◽  
Author(s):  
YURI V. KOVCHEGOV ◽  
DOUGLAS E. WERTEPNY
Keyword(s):  
Long Range ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Azimuthal Angle ◽  
Heavy Ion ◽  
The Other ◽  
Color Glass ◽  
Ion Collisions ◽  
Gluon Production

We study two-particle long-range rapidity correlations arising in the early stages of heavy ion collisions in the saturation/Color Glass Condensate framework, assuming for simplicity that one colliding nucleus is much larger than the other. We calculate the two-gluon production cross section while including all-order saturation effects in the heavy nucleus with the lowest-order rescattering in the lighter nucleus. We find four types of correlations in the two-gluon production cross section: (i) geometric correlations, (ii) HBT correlations accompanied by a back-to-back maximum, (iii) away-side correlations, and (iv) near-side azimuthal correlations which are long-range in rapidity. The geometric correlations (i) are due to the fact that nucleons are correlated by simply being confined within the same nucleus and may lead to long-range rapidity correlations for the produced particles without strong azimuthal angle dependence. Somewhat surprisingly, long-range rapidity correlations (iii) and (iv) have exactly the same amplitudes along with azimuthal and rapidity shapes: one centered around Δϕ = π with the other one centered around Δϕ = 0 (here Δϕ is the azimuthal angle between the two produced gluons). We thus observe that the early-time CGC dynamics in nucleus-nucleus collisions generates azimuthal non-flow correlations which are qualitatively different from jet correlations by being long-range in rapidity. If strong enough, they have the potential of mimicking the elliptic (and higher-order even-harmonic) flow in the di-hadron correlators: one may need to take them into account in the experimental determination of the flow observables.

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