scholarly journals Radial profile of heavy quarks in jets in high-energy nuclear collisions

2021 ◽  
Author(s):  
Sa Wang ◽  
Wei Dai ◽  
Ben-Wei Zhang ◽  
Enke Wang
Keyword(s):  
Radial Profile ◽  
High Energy ◽  
Heavy Quarks ◽  
Nuclear Collisions

scholarly journals Radial profile of bottom quarks in jets in high-energy nuclear collisions

2021 ◽  
Author(s):  
Sa Wang ◽  
Wei Dai ◽  
Ben-Wei 张本威 Zhang ◽  
Enke Wang
Keyword(s):  
Radial Profile ◽  
High Energy ◽  
Bottom Quarks ◽  
Nuclear Collisions

scholarly journals Spatiotemporal analysis of the runaway distribution function from synchrotron images in an ASDEX Upgrade disruption

2021 ◽  
Vol 87 (1) ◽  
Author(s):  
M. Hoppe ◽  
L. Hesslow ◽  
O. Embreus ◽  
L. Unnerfelt ◽  
G. Papp ◽  
...  
Keyword(s):  
Radial Profile ◽  
Spatiotemporal Analysis ◽  
High Energy ◽  
Synchrotron Emission ◽  
Analytic Model ◽  
Runaway Electrons ◽  
Radial Density ◽  
Radial Density Profile ◽  
Argon Injection ◽  
Seed Population

Synchrotron radiation images from runaway electrons (REs) in an ASDEX Upgrade discharge disrupted by argon injection are analysed using the synchrotron diagnostic tool Soft and coupled fluid-kinetic simulations. We show that the evolution of the runaway distribution is well described by an initial hot-tail seed population, which is accelerated to energies between 25–50 MeV during the current quench, together with an avalanche runaway tail which has an exponentially decreasing energy spectrum. We find that, although the avalanche component carries the vast majority of the current, it is the high-energy seed remnant that dominates synchrotron emission. With insights from the fluid-kinetic simulations, an analytic model for the evolution of the runaway seed component is developed and used to reconstruct the radial density profile of the RE beam. The analysis shows that the observed change of the synchrotron pattern from circular to crescent shape is caused by a rapid redistribution of the radial profile of the runaway density.

scholarly journals Multiplicity fluctuations in high energy hadronic and nuclear collisions

2006 ◽  
Vol 151 (1) ◽  
pp. 363-366 ◽  
Author(s):  
M. Rybczyński ◽  
Z. Włodarczyk ◽  
O.V. Utyuzh ◽  
G. Wilk
Keyword(s):  
High Energy ◽  
Nuclear Collisions

scholarly journals Sequential suppression of quarkonia and high-energy nucleus–nucleus collisions

2015 ◽  
Vol 30 (37) ◽  
pp. 1550205 ◽  
Author(s):  
Nirupam Dutta ◽  
Nicolas Borghini
Keyword(s):  
High Energy ◽  
Heavy Quarkonia ◽  
Adiabatic Evolution ◽  
Nuclear Collisions

According to the usual application of the sequential-suppression picture to the dynamics of heavy quarkonia in the hot medium formed in ultrarelativistic nuclear collisions, quark–antiquark pairs created in a given bound or unbound state remain in that same state as the medium evolves. We argue that this scenario implicitly assumes an adiabatic evolution of the quarkonia and we show that the validity of the adiabaticity assumption is questionable.

Sign in / Sign up

Export Citation Format

Share Document