Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268

Thu., February 27, 2014, at 3:00 pm - 4:00 pm

Jet Quenching in Relativistic Heavy-Ion Collisions: Shedding Light on the Quark Gluon Plasma

Rosi Reed, Wayne State University, Detroit, MI
ORNL, Bldg. 6025 Large Conference Room

In relativistic heavy-ion collisions a hot, dense medium of strongly interacting matter called the Quark Gluon Plasma (QGP) is formed. These collisions have been studied with great success at the Relativistic Heavy Ion Collider (RHIC) for over a decade. One important observation of the QGP that has come from this data is that jets of hadrons, created from the fragmentation of hard-scattered partons (quarks or gluons), are suppressed relative to scaled proton-proton collisions. This suppression, due to medium induced radiation by the parton, is called jet quenching. At the Large Hadron Collider (LHC), the collision energy was increased over an order of magnitude compared to RHIC, which increases the parton cross-section, allowing jets to be reconstructed over a wider kinematic range. Results from heavy-ion measurements from the ALICE detector will be shown and compared to both RHIC and other LHC experiments. Jet quenching indicates that the QGP created in these heavy-ion collisions is both dense and opaque, and with the greater statistics and kinematic reach of the LHC, the QGP properties can be better quantified.

Contact: Alfredo Galindo-Uribarri, (865) 574-6124