2024/07/30 by Kong, Wei-Xi, Zhang, Ben-Wei · 1 citation
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)
paper · doi:10.48550/arxiv.2407.20680
We present the first theoretical investigation of Fox-Wolfram moments (FWMs) for multi-jet production in relativistic heavy ion collisions. In this work, jet productions in p+p collisions are computed with a Monte Carlo event generator SHERPA, while the Linear Boltzmann Transport model is utilized to simulate the multiple scattering of energetic partons in the hot and dense QCD matter. The event-normalized distributions of the lower-order FWM, H1T in p+p and Pb+Pb collisions are calculated. It is found that for events with jet number njet = 2 the H1T distribution in Pb+Pb is suppressed at small H1T while enhanced at large H1T region as compared to p+p. For events with njet>2, the jet number reduction effect due to jet quenching in the QGP decreases the H1T distribution at large H1T in Pb+Pb relative to p+p. The medium modification of the Fox-Wolfram moment H1T for events with njet≥ 2 are also presented, which resemble those of events with njet = 2. Its reason is revealed through the relative contribution fractions of events with different final-state jet numbers to H1T.