ProbetheQGPviadihadroncorrelationsJetquenchingand.ppt

Probe the QGP via dihadron correlations: Jet quenching and Medium-response;Particle production mechanisms;Particle production mechanisms;Jet contribution via dihadron correlation;Azimuth correlation at high pT;Azimuth correlation at high pT;Average energy loss vs. absorption?;PRC.71:034909,2005 ;; Flatter spectra and longer pathlength) compensated by bigger fractional energy loss -- IAA ~ RAA For g-jet, pure absorption: IAA=RAA pure energy shift: IAARAA. By combing IAA and RAA, one gain some sensitivity on energy loss ;Low pT: medium response to jet;Away-side particle composition;Away-side energy dependence;pT Scan: Competition between Jet and medium;Head region: Upper limit of jet fragmentation Shoulder Region: Response of the medium;Cone;Jet spectra slope at low pT ;Low trigger pT, decrease with Npart Onset of jet quenching, soft contribution dominates (feed in from shoulder) High trigger pT, flat with Npart Soft contribution dies out, Jet dominate.;Parton-medium interaction;Radiation contribution; ;Low pT : dilution effect;Are low pT particles from jets?;Near side JAA;Both important at pT?4, softer than jet, similar PID chemistry (see Jana, Anne’s talk). Mechanisms for Ridge and cone should play a role on both sides. They do not suffer surface bias.;Summary;Backup;u;Outline;Should I worry about non-flow in correlation?;Should I worry about non-flow in correlation?; What v2 to use in correlation?