Feb 5 – 11, 2017
Hyatt Regency Chicago
America/Chicago timezone

Effect of $p_T$ broadening in inclusive jet and hadron-jet suppressions

Not scheduled
2h 30m
Hyatt Regency Chicago

Hyatt Regency Chicago

151 East Wacker Drive Chicago, Illinois, USA, 60601
Board: H10


Dr Shu-yi Wei (CCNU)


The effect of the transverse momentum broadening to the total jet energy loss within a given jet cone-size, and therefore to the nuclear suppression factor are studied. The radiated gluons induced by the medium are mostly collinear with the mother parton. Therefore, the energy carried by the radiated gluons outside of the jet-cone is very small. However, the $p_T$ broadening effect can enlarge the angle between the mother parton and the radiated gluons. We found that this $p_T$ broadening effect is very important, which almost doubled the radiative energy loss. We also studied the collisional energy loss based on the pQCD calculation. We found that the collisional energy loss is very small comparing with the radiative energy loss.

We carried out the calculation for the nuclear modification factor of the single jet production, $R_{AA}$. We found our results can describe the ALICE and ATLAS data with different cone-sizes very well. We also calculated the suppression of the per-trigger yield of hadron-jet production, and compared with the latest data, which is not only sensitive to the full jet energy loss but also sensitive to the leading parton energy loss.

Preferred Track Jets and High pT Hadrons
Collaboration Not applicable

Primary author

Dr Shu-yi Wei (CCNU)


Hanzhong Zhang (IOPP, CCNU) Xin-Nian Wang (Lawrence Berkeley National Lab. (US))

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