Measurement of the transverse energy density in Au+Au collisions at √s_NN = 200 GeV with the sPHENIX detector

2025/04/03 by sPHENIX Collaboration, Abdulhamid, M. I., Acharya, U. +302
#FOS: Physical sciences #Nuclear Experiment (nucl-ex)

paper · doi:10.48550/arxiv.2504.02242

Abstract

This paper reports measurements of the transverse energy per unit pseudorapidity (dE_T/dη) produced in Au+Au collisions at √s_NN = 200 GeV, performed with the sPHENIX detector at the Relativistic Heavy Ion Collider (RHIC). The results cover the pseudorapidity range |η| < 1.1 and constitute the first such measurement performed using a hadronic calorimeter at RHIC. Measurements of dE_T/dη are presented for a range of centrality intervals and the average dE_T/dη as a function of the number of participating nucleons, N_part, is compared to a variety of Monte Carlo heavy-ion event generators. The results are in agreement with previous measurements at RHIC, and feature an improved granularity in η and improved precision in low-N_part events.

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