# 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

May 31, 2020 to June 5, 2020
Online
US/Central timezone

## Jet modification with two particle correlations in Au+Au collisions at PHENIX

Jun 2, 2020, 7:30 AM
1h 20m
Online

#### Online

Poster Presentation Jets and High Momentum Hadrons

### Speaker

Megan Elizabeth Connors

### Description

Two particle correlations which use a high momentum trigger particle are a
useful probe for exploring energy loss in the quark gluon plasma,
particularly in the high multiplicity environment of heavy ion collisions.
Previous direct photon-hadron correlation measurements in PHENIX have
demonstrated the energy loss observed as the suppression of high momentum
particles is redistributed to low momentum particle production at wide
angles from the jet. The direct photon gives access to the kinematics from
the initial hard scattering, which can be used to directly measure the
fragmentation function of the opposing jet. However, it has been observed
that the transition from suppression to enhancement appears at a fixed
associated particle $p_{T}$ rather than at a fixed $z$, the fragmentation
function variable. Recent $\pi^0$-hadron correlations have explored these
modifications more differentially as a function of associate hadron $p_T$
and angular distance, $\Delta\phi$, from the approximated jet axis. This
talk will report on the latest two-particle correlation measurements in
Au+Au collisions compared to p+p collisions from PHENIX, their relation to
fully reconstructed jet measurements and the implications of these
measurements on our understanding of jet energy loss in the QGP.

Collaboration (if applicable) PHENIX Jets and High Momentum Hadrons Contributed Talk

### Primary author

Gabor David (Brookhaven National Laboratory)