Nuclear Physics Seminar

"Photon-jet correlation measurement at ATLAS"

Presented by Yeonju Go, BNL

Tuesday, October 10, 2023, 11:00 am — Small Seminar Room, Bldg. 510

Abstract: Partons traversing the hot and dense medium of deconfined color charges produced in collisions of heavy nuclei are expected to lose their energy primarily through medium-induced gluon bremsstrahlung. As a result, the amount of induced energy loss is expected to depend on the QCD color charge carried by the parton, i.e. depend on whether it is a quark- or a gluon-initiated jet. In this seminar, photon+jet events taken with the ATLAS detector in Pb+Pb and pp collisions [1] will be present to constrain the color-charge dependence of jet energy loss. Furthermore, the presence of jets modifies the medium, leading to phenomena such as Mach Cones and diffusion wakes. The recent measurement of jet-hadron correlations in angular space in photon-jet events with ATLAS [2] will be discussed in the pursuit of identifying potential diffusion wake signatures. [1] PLB 846 (2023) 138154 [2] ATLAS-CONF-2023-054

Hosted by: Takao Sakaguchi

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