scholarly journals Recent heavy-flavour results from ATLAS

2018 ◽  
Vol 171 ◽  
pp. 01006
Author(s):  
Jing Chen
Keyword(s):  
Elliptic Flow ◽  
Dense Matter ◽  
Heavy Ion ◽  
Charmonium State ◽  
Medium Effects ◽  
Strong Suppression ◽  
Centrality Dependence ◽  
Flow Signal ◽  
Central Collisions ◽  
Large Systems

The ATLAS heavy-ion program utilizes heavy-flavour hadrons to probe the hot, dense matter formed at the LHC. Quarkonium measurements have been performed in pp, p+Pb and Pb+Pb systems to study medium effects. The Pb+Pb results show a strong suppression of charmonium productions in more central events. Proton-lead interactions show little modification of the 1S charmonium state, but seem to indicate a centrality dependence of the 2S state. Upsilons have been studied in p+Pb and are found to show decreasing behaviour in more central collisions. Inclusive muons with pT above 4 GeV have been studied to provide insight on open-flavour production, and are found to be strongly suppressed in Pb+Pb collisions with a substantial and significant elliptic flow signal. Muon-hadron correlations have also been studied in the 2016 [see formula in PDF] = 8.16 TeV p+Pb data. There are clear indications of a near-side ridge, suggesting that similar mechanisms may be relevant for both the small and large systems.

scholarly journals A Review of Elliptic Flow of Light Nuclei in Heavy-Ion Collisions at RHIC and LHC Energies

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Md. Rihan Haque ◽  
Chitrasen Jena ◽  
Bedangadas Mohanty
Keyword(s):  
Blast Wave ◽  
Heavy Ion Collisions ◽  
Elliptic Flow ◽  
Theoretical Models ◽  
Heavy Ion ◽  
Light Nuclei ◽  
Centrality Dependence ◽  
Ion Collisions ◽  
The Difference ◽  
Wave Models

We present a review of the measurements of elliptic flow (v2) of light nuclei (d, d¯, t, He3, and He¯3) from the RHIC and LHC experiments. Light (anti)nuclei v2 have been compared with that of (anti)proton. We observed a similar trend in light nuclei v2 to that in identified hadron v2 with respect to the general observations such as pT dependence, low pT mass ordering, and centrality dependence. We also compared the difference of nuclei and antinuclei v2 with the corresponding difference of v2 of proton and antiproton at various collision energies. Qualitatively they depict similar behavior. We also compare the data on light nuclei v2 to various theoretical models such as blast-wave and coalescence. We then present a prediction of v2 for He3 and He4 using coalescence and blast-wave models.

scholarly journals Elliptic flow of colored glass in high energy heavy ion collisions

2003 ◽  
Vol 554 (1-2) ◽  
pp. 21-27 ◽  
Author(s):  
Alex Krasnitz ◽  
Yasushi Nara ◽  
Raju Venugopalan
Keyword(s):  
Heavy Ion Collisions ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
High Energy ◽  
Colored Glass ◽  
Ion Collisions

scholarly journals Hadronic dissipative effects on elliptic flow in ultrarelativistic heavy-ion collisions

2006 ◽  
Vol 636 (6) ◽  
pp. 299-304 ◽  
Author(s):  
Tetsufumi Hirano ◽  
Ulrich Heinz ◽  
Dmitri Kharzeev ◽  
Roy Lacey ◽  
Yasushi Nara
Keyword(s):  
Heavy Ion Collisions ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
Ion Collisions ◽  
Dissipative Effects ◽  
Ultrarelativistic Heavy Ion Collisions

scholarly journals Kaon production from hot and dense matter formed in heavy-ion collisions

1991 ◽  
Vol 43 (4) ◽  
pp. 1881-1892 ◽  
Author(s):  
G. E. Brown ◽  
C. M. Ko ◽  
Z. G. Wu ◽  
L. H. Xia
Keyword(s):  
Heavy Ion Collisions ◽  
Dense Matter ◽  
Heavy Ion ◽  
Kaon Production ◽  
Ion Collisions

THE ALICE EXPERIMENT AT CERN LHC: STATUS AND FIRST RESULTS

2011 ◽  
Vol 26 (03n04) ◽  
pp. 517-522
Author(s):  
◽  
ERMANNO VERCELLIN
Keyword(s):  
Data Analysis ◽  
Cosmic Rays ◽  
Dense Matter ◽  
Heavy Ion ◽  
Short Description ◽  
Alice Experiment ◽  
Ion Collisions ◽  
Physics Program ◽  
Accelerate Proton ◽  
First Results

The ALICE experiment is aimed at studying the properties of the hot and dense matter produced in heavy-ion collisions at LHC energies. In the first years of LHC operation the ALICE physics program will be focused on Pb - Pb and p - p collisions. The latter, on top of their intrinsic interest, will provide the necessary baseline for heavy-ion data. After its installation and a long commissioning with cosmic rays, in late fall 2009 ALICE participated (very successfully) in the first LHC run, by collecting data in p - p collisions at c.m. energy 900 GeV. After a short stop during winter, LHC operations have been resumed; the machine is now able to accelerate proton beams up to 3.5 TeV and ALICE has undertaken the data taking campaign at 7 TeV c.m. energy. After an overview of the ALICE physics goals and a short description of the detector layout, the ALICE performance in p - p collisions will be presented. The main physics results achieved so far will be highlighted as well as the main aspects of the ongoing data analysis.

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