Speaker
Yasuki Tachibana
(The University of Tokyo)
Description
Increase of highly-asymmetric dijet events compared with p+p collisions
is obsereved in ultra-relativistic heavy-ion collisions both at LHC and at RHIC.
At LHC, enhancement of low-$p_T$ particles extending upto large angle from axes of jets
is observed by the CMS Collaboration [1].
The total-$p_T$ of these low-$p_T$ particles compensate
the imbalance of the dijet momenta.
On the other hand, according to recent results from the STAR collaboration at RHIC,
the di-jet imbalance is compensated by the low-$p_T$ particles closer to the jet direction [2].
Motivated by these latest results,
we study the transport dynamics of momenta deposited from jets in QGP fluid.
Simulations of dijet asymmetric events in ultra-relativistic heavy-ion collisions at LHC and at RHIC are performed
by solving relativistic hydrodynamic equations with source terms in fully (3+1)-dimensional Milne coordinates.
We calculate the $p_T$ distribution around jets to interpret di-jet asymmetric events both at LHC and at RHIC.
References
[1] Doga Gulhan [CMS Collaboration], talk at Quark Matter 2014.
[2] Jörn Putschke [STAR Collaboration], talk at Quark Matter 2014.
Primary author
Yasuki Tachibana
(The University of Tokyo)
Co-author
Tetsufumi Hirano
(Sophia Univ)
