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

Jet shape depending on the gradient of jet energy loss in heavy-ion collisions

Apr 25, 2023, 5:00 PM
Multi-Purpose Studio, 2nd Floor (JMS Aster Plaza)

Multi-Purpose Studio, 2nd Floor

JMS Aster Plaza

Poster Jets and medium response Poster Session


Yuxin Xiao (CCNU)


Jet shape is studied with a linear Boltzmann transport model for event-by-event simulations of photon-tagged jets in heavy-ion collisions. The transverse momentum asymmetry $A_{\perp}$ is shown to increase with the initial transverse position when the gradient of jet transport coefficient $\hat{q}$ increases until at the edge of the nonuniform medium. On one hand,the shape of the photon-tagged jet selected by the smaller $A_{\perp}$ events is "fatter" for the transverse momentum distribution inside the jet due to stronger jet quenching. On the other hand, the jet shape with higher $p_T^{jet}$ is "thinner" due to surface emission of the initial jets. Our numerical results show that the different choices for both final observables $A_{\perp}$ and $p_T^{jet}$ demonstrate different initial jet creation cites and therefore different jet shapes depending on the gradient of $\hat{q}$.

Theory / experiment Theory

Primary author


Dr Yayun He (South China Normal University) LongGang Pang (Central China Normal University) Dr Xin-Nian Wang (Lawrence Berkeley National Lab. (US)) Hanzhong Zhang (IOPP, CCNU)

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