Semi-inclusive jets recoiling from γ_dir and π⁰ triggers in central Au+Au collisions at √ s_{\rm NN} = 200 GeV in STAR

2018/12/19 by N. R. Sahoo, Sahoo, Nihar Ranjan
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Particle Detector Development and Performance #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.1812.08045

openalex publication_date 2018/12/19 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28

Abstract

We report the first measurement of fully corrected semi-inclusive charged recoil jets for both direct-photon (γ_dir) and π⁰ triggers, within two trigger transverse energy ranges between 9 GeV and 15 GeV, in central Au+Au collisions at √ s_{\rm NN} = 200 GeV using data with an integrated luminosity of 13 \rm nb^-1 collected by the STAR experiment. A comparison between π⁰-triggered recoil jets in p+p collisions and PYTHIA is discussed. A comparison is also presented between the suppression of γ_dir- and π⁰-triggered recoil jets in central Au+Au collisions with respect to their corresponding PYTHIA references. A strong and similar level of suppression is observed in recoil-jet yields as a function of jet transverse momentum for γ_dir+jet and π⁰+jet.

Related

• Measurement of γ+jet and π⁰+jet in central Au+Au collisions at √s_NN = 200 GeV with the STAR experiment
• Semi-inclusive direct photon+jet and π⁰+jet correlations measured in p+p and central Au+Au collisions at √(s_NN) = 200 GeV
• Measurement of medium-induced modification of jet yield and acoplanarity using semi-inclusive γ_dir+jet and π⁰+jet distributions in p+p and central Au+Au collisions at √s_NN = 200 GeV by STAR
• Jet Measurements with Neutral and Di-jet Triggers in Central Au+Au Collisions at √s_NN = 200 GeV with STAR
• Measurement of in-medium jet modification using direct photon+jet and π⁰+jet correlations in p+p and central Au+Au collisions at √s_{\rm NN} = 200 GeV