sPHENIX discussion of physics

["Perepelitsa, Dennis" <dvp AT bnl.gov>]

Hi sPHENIX colleagues,

You may be interested in this BNL Nuclear Physics Seminar by our own Jet Structure TG Convener Tim Rinn, which starts in about half an hour.

You may remember that we sometimes discuss dijet asymmetry as a possible “day-1” jet measurement in sPHENIX - one for which, under certain kinematic selections, the response in p+p and Au+Au is quite similar.

Dennis

Begin forwarded message:

From: "Lamar, Erica" <elamar AT bnl.gov>

Subject: Revised: Nuclear Physics Seminar

Date: April 19, 2022 at 7:59:40 AM MDT

To: "physics-seminars-l AT lists.bnl.gov" <physics-seminars-l AT lists.bnl.gov>

Nuclear Physics Seminar
"ATLAS dijet"
Presented by Timothy Rinn, BNL

Tuesday, April 19, 2022, 11:00 am - Videoconference / Virtual Event (see link below)

Abstract: High energy partons are well established to lose energy when traversing the hot and dense medium produced in heavy-ion collisions. This results in a modification to the transverse momentum distributions of jets, producing a phenomenon known as jet quenching. It has been previously established in Pb+Pb collisions at √(s_NN ) = 2.76 TeV that jet quenching results in significant modifications to the transverse momentum balance (xJ) of dijet pairs. More differential measurements are needed to better understand the asymmetric jet quenching observed and explore the role of energy loss fluctuations and path-length dependent energy loss. In this seminar I will discuss new, fully unfolded measurements of the dijet momentum balance in Pb+Pb and pp collisions at √(s_NN ) =5.02 TeV with extended kinematic reach over previous publications, as well as the never-before-measured per-event-yield of dijets as a function of x_J providing new access to jet suppression. I will additionally present a new observable, the nuclear modification factor of subleading and leading jets, which has enhanced sensitivity to jet energy loss and provides a precise quantification of asymmetric energy loss experienced by dijets.

Hosted by: Takao Sakaguchi

Join Videoconference<https://bnl.zoomgov.com/j/1618659309?pwd=Unc4QTY4QUlBUXoyY1lEeGRMSDh2Zz09>  More Information<https://indico.bnl.gov/event/15387/>  Add to Calendar<https://intranet.bnl.gov/calendar.php?q=17530>

Thank you,
Erica Lamar
Brookhaven National Laboratory
Physics Department
Sr. Administrative Assistant to the Chair's Office
Building 510A
Upton, NY 11973-5000
(631) 344-2585
elamar AT bnl.gov<mailto:elamar AT bnl.gov>

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Dennis V. Perepelitsa

Assistant Professor, Physics Department

University of Colorado Boulder