Nuclear modification of jet shape for inclusive jets and $\gamma$-jets at the LHC energies
With our coupled jet-fluid model, we study the nuclear modifications of full jets and jet structures for single inclusive jets and $\gamma$-jets in Pb+Pb collisions at $5.02$~ATeV and $2.76$~ATeV. The in-medium evolution of full jet shower is described by a set of coupled transport equations includi...
Saved in:
Main Authors | , , |
---|---|
Format | Journal Article |
Language | English |
Published |
23.06.2019
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | With our coupled jet-fluid model, we study the nuclear modifications of full
jets and jet structures for single inclusive jets and $\gamma$-jets in Pb+Pb
collisions at $5.02$~ATeV and $2.76$~ATeV. The in-medium evolution of full jet
shower is described by a set of coupled transport equations including the
effects of collisional energy loss, transverse momentum broadening and
medium-induced splitting process. The dynamical evolution of bulk medium is
simulated by solving relativistic hydrodynamic equation with source term which
accounts for the energy and momentum deposited by hard jet shower to soft
medium. Our study demonstrates that the hydrodynamic medium response to jet
propagation significantly enhances the broadening of jet shape at large angles
and is essential for the cone-size dependence of jet energy loss and nuclear
modification factor of inclusive jet production. It is also found that the
nuclear modification pattern of jet shape is sensitive to jet energy but has
weak dependence on the flavor of the parton that initiates the jet. Our result
can naturally explain the different nuclear modification patterns of jet shape
functions for single inclusive jet and $\gamma$-jet events as observed by the
CMS Collaboration, and can be tested in the future by measuring the jet shape
function over a wider range of jet energies in heavy-ion collisions. |
---|---|
DOI: | 10.48550/arxiv.1906.09562 |