2011/09/04 by M. J. Tannenbaum, Tannenbaum, M. J.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1109.0760
openalex publication_date 2011/09/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The method of measuring xh=pTa/pTt, the ratio of the away-parton transverse momentum, pTa, to the trigger-parton transverse momentum, pTt, using two-particle correlations at RHIC, will be reviewed. This measurement is simply related to the two new variables introduced at LHC for the di-jet fractional transverse momentum imbalance: ATLAS AJ=(pTt-pTa)/(pTt+pTa)= (1-xh)/(1+xh); and CMS \mean(pTt-pTa)/pTt= \mean1-xh. Results from two-particle correlations at RHIC for xh in p-p and A+A collisions will be reviewed and new results will be presented and compared to LHC results. The importance of comparing any effect in A+A collisions to the same effect effect in p-p collisions will be illustrated and emphasized.