Di-hadron correlations with identified leading hadrons in 200 GeV Au + Au and d + Au collisions at STAR
L. Adamczyk (AGH University of Science and Technology, Cracow, 30-059, Poland); J.K. Adkins (University of Kentucky, Lexington, KY, 40506-0055, USA); G. Agakishiev (Joint Institute for Nuclear Research, 141 980, Dubna, Russia); M.M. Aggarwal (Panjab University, Chandigarh, 160014, India); Z. Ahammed (Variable Energy Cyclotron Centre, Kolkata, 700064, India); et al - Show all 334 authors
The STAR Collaboration presents for the first time two-dimensional di-hadron correlations with identified leading hadrons in 200 GeV central Au + Au and minimum-bias d + Au collisions to explore hadronization mechanisms in the quark gluon plasma. The enhancement of the jet-like yield for leading pions in Au + Au data with respect to the d + Au reference and the absence of such an enhancement for leading non-pions (protons and kaons) are discussed within the context of a quark recombination scenario. The correlated yield at large angles, specifically in the ridge region , is found to be significantly higher for leading non-pions than pions. The consistencies of the constituent quark scaling, azimuthal harmonic model and a mini-jet modification model description of the data are tested, providing further constraints on hadronization.
