Tuesday, October 26, 2010, 3:30 pm — Large Seminar Room, Bldg. 510
The CMS collaboration recently announced an observation of long-range near-side angular correlations
in proton-proton collisions at LHC. The new finding describes a novel correlation that particles coming
out of the collision are aligned in their azimuthal angle over a large pseudorapidity region, a "ridge"-like
structure that is absent in minimum bias events but emerges as particle multiplicity reaches very high value.
This phenomenon has not been observed before in proton-proton (pp) collisions but resembles similar
effect following collisions of nuclei such as copper and gold ions at RHIC. In this talk, I will
focus on the experimental aspects of this measurement in detail, followed by a discussion
of future directions to pin down the physical origin of the observation including its potential
connection to the heavy ion physics.
Hosted by: Aihong Tang
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