scholarly journals Fractal structure of near-threshold quarkonium production off cold nuclear matter

2013 ◽  
Vol 88 (4) ◽  
Author(s):  
Partha Pratim Bhaduri ◽  
Sourendu Gupta
2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
François Arleo ◽  
Stéphane Peigné

Quarkonium production in proton-nucleus collisions is a powerful tool to disentangle cold nuclear matter effects. A model based on coherent energy loss is able to explain the available quarkonium suppression data in a broad range of rapidities, from fixed-target to collider energies, suggesting coherent energy loss in cold nuclear matter to be the dominant effect in quarkonium suppression in p-A collisions. This could be further tested in a high-energy fixed-target experiment using a proton or nucleus beam. The nuclear modification factors ofJ/ψandΥas a function of rapidity are computed in p-A collisions ats=114.6 GeV, and in p-Pb and Pb-Pb collisions ats=72 GeV. These center-of-mass energies correspond to the collision on fixed-target nuclei of 7 TeV protons and 2.76 TeV (per nucleon) lead nuclei available at the LHC.


2019 ◽  
Vol 64 (7) ◽  
pp. 566
Author(s):  
F. Fionda

In (ultra-)relativistic heavy-ion collisions, the strongly interactingmatter is predicted to undergo a phase transition into a plasma of deconfinedquarks and gluons (QGP) and quarkonia probe different aspects of this medium.However, the medium modification of quarkonium production includes also the contribution of cold nuclear matter effects (CNM), such as shadowing or nuclear break-up in addition to QGP effects. Proton--nucleus collisions, where no QGP is expected, are used to measure cold nuclear matter effects on quarkonium production. Vacuum production of quarkonia is modelled in proton--proton (pp) collisions, which are used as reference for both heavy-ion and proton--nucleus collisions. Besides serving as reference, results in pp collisions represent a benchmark test of QCD based models in both perturbative and non-perturbative regimes. The ALICE detector has unique capabilities at the LHC for measuring quarkonia down to zero transverse momentum. Measurements are carried out at both central and forward rapidity, in the dielectron and dimuon decay channel, respectively. In this contribution the latest quarkonium measurements for various energies and colliding systems, performed by the ALICE Collaboration during the LHC Run-2 period, will be discussed.


2014 ◽  
Author(s):  
Mathias Neuman ◽  
Jens Langelage ◽  
Owe Philipsen

2014 ◽  
Vol 77 (5) ◽  
pp. 576-580 ◽  
Author(s):  
K. R. Mikhailov ◽  
A. V. Stavinskiy ◽  
V. L. Stolin ◽  
G. B. Sharkov

2017 ◽  
Vol 912 ◽  
pp. 012009
Author(s):  
J J Cobos-Martínez ◽  
K. Tsushima ◽  
G. Krein ◽  
A. W. Thomas

JETP Letters ◽  
2021 ◽  
Vol 113 (5) ◽  
pp. 289-296
Author(s):  
S. V. Evdokimov ◽  
V. I. Izucheev ◽  
E. S. Kondratyuk ◽  
B. V. Polishchuk ◽  
S. A. Sadovsky ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document