Apr 23 – 27, 2023
JMS Aster Plaza
Asia/Tokyo timezone

Describing Ridge behavior via kinematics between jets and medium

Apr 25, 2023, 5:40 PM
Multi-Purpose Studio, 2nd Floor (JMS Aster Plaza)

Multi-Purpose Studio, 2nd Floor

JMS Aster Plaza

Poster Correlations and fluctuations Poster Session


Soyeon Cho (Inha University (KR))


The Ridge behavior in high-multiplicity pp collisions has been discussed a lot since it was first reported in year. Because small systems cannot provide sufficient conditions to produce a medium called QGP, in which the ridge behavior is understood with hydrodynamics. In this work, we propose the pure kinematic mechanism between jets and medium partons as tools for describing the Ridge behavior.
In practical calculation, we choose parton distribution functions from the hard scattering model (phPDh) as initial medium parton’s distribution. The phPDh is parameterized by a fallout parameter, $a$, a non-extensive parameter, $q$, and the temperature of the system, $T$. Compared to the PYTHIA simulation, we extract proper values of $a = 85$, $q = 1.15$, and $T = 145\,\rm{MeV}$. We calculate a two-particle angular correlation using phPDh with various energy losses and angles of jet particles after collisions.

Theory / experiment Theory
Group or collaboration name Inha University

Primary authors

Jin Hee Yoon (Inha University (KR)) Soyeon Cho (Inha University (KR))

Presentation materials