Medium response from mini-jets and in-medium hadronization in relativistic heavy ion collisions

Jun 4, 2020, 11:15 AM
20m
https://cern.zoom.us/j/97225903958

https://cern.zoom.us/j/97225903958

Oral Presentation Jets and High Momentum Hadrons Parallel

Speaker

Dr Sangwook Ryu (Wayne State University)

Description

In ultra-relativistic heavy-ion collisions, partons with intermediate energy (5-10) GeV excite ripples as they travel through the Quark-Gluon Plasma (QGP).
These ripples' effect on particle production phenomenology is not very well studied.
In this work, we extend our previous work \cite{Ryu:2018ckh} and present study using a state-of-the-art hybrid framework that consists of the IP-Glasma pre-thermalization dynamics, viscous hydrodynamics (MUSIC), jet energy loss (MARTINI), and hadronic re-scatterings (UrQMD). This framework consistently handles both soft and hard physics involved in relativistic heavy ion collisions.
We consider the energy loss of mini-jets, whose energy is between 5 to 10 GeV, and their induced medium excitation.
The energy and momentum lost from the mini-jets are treated as either free-streaming wave-packets or causal diffusive perturbations of the hydrodynamic flow.
They alter the energy-stress tensor evaluated on the particlization hypersurface during the hadronization as jet induced medium response.
In addition, this approach uses a novel in-medium fragmentation where the color neutrality of a string is enforced locally.
We quantify the importance of the medium response from mini-jets propagation and their in-medium hadronization on identified particle $p_T$-spectra and their flow anisotropic coefficients.

S. Ryu, S. McDonald, C. Shen, S. Jeon and C. Gale,
``Effects of hadronic rescattering in mini-jet production and energy loss at the LHC''
PoS High-pT 2017, 014 (2019).
doi:10.22323/1.320.0014

Contribution type Contributed Talk
Track Jets and High Momentum Hadrons

Primary author

Dr Sangwook Ryu (Wayne State University)

Co-authors

Scott McDonald (McGill University) Chun Shen (Wayne State University) Sangyong Jeon (McGill University) Charles Gale (McGill University)

Presentation materials