Nuclear Physics & RIKEN Theory Seminar

"Jets, Mach-cone, hot spots, ridges and harmonic flow - the landscape in dihadron correlation"

Presented by Xin-Nian Wang, LBNL

Friday, January 28, 2011, 2:00 pm — Small Seminar Room, Bldg. 510

Fluctuations in initial parton production in high-energy heavy-in collisions lead to irregular initial transverse energy density distribution with hot spots and valleys that are also extended in rapidity.
These irregular initial density distribution will lead to finite harmonic flow in hadron distribution through collective expansion even in the most central heavy-ion collisions. I will discuss dihadron correlations from dijets, jet-induced Mach-cone and expanding hot spots, after subtraction of contributions from harmonic flow.
Comparison between dihadron and gamma-hadron correlation will further differentiate correlations from Mach-cone and expanding hot spots. The ridge-like structure of these net diahdron correlation in the longitudinal direction is also discussed

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