Bulletin of the American Physical Society
APS April Meeting 2011
Volume 56, Number 4
Saturday–Tuesday, April 30–May 3 2011; Anaheim, California
Session H2: Advances in the Strong Interaction |
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Sponsoring Units: GHP Chair: Abhay Deshpande, SUNY Stony Brook Room: Grand BCD |
Sunday, May 1, 2011 10:45AM - 11:21AM |
H2.00001: Strong local parity violation at RHIC Invited Speaker: I will discuss the fate of parity invariance (mirror symmetry) in hot and dense quark-gluon matter. While parity is globally conserved in Quantum ChromoDynamics, the interplay of topology and external magnetic field can induce local parity-odd effects. In particular, the local imbalance between left- and right-handed fermions in the presence of magnetic field induces the spatial separation of positive and negative electric charges (``the Chiral Magnetic Effect''). In heavy ion collisions, this effect can be detected through the separation of positive and negative hadrons with respect to the reaction plane. There is a recent evidence for charge separation from the experiments at Relativistic Heavy Ion Collider. The effect has intriguing implications for the cosmology of the Early Universe, and has analogs in condensed matter physics (quantum wires and graphene), and in astrophysics (particle acceleration in cosmic strings). [Preview Abstract] |
Sunday, May 1, 2011 11:21AM - 11:57AM |
H2.00002: Initial results from the LHC Invited Speaker: Since November 2009 the LHC has collided p+p at total center of mass energy of 0.9, 2.36 and 7 TeV, and Pb+Pb at 2.76 TeV per nucleon pair. Initial results obtained by the three collaborations ALICE, ATLAS and CMS will be discussed. The focus will be on data related to the study of QCD under extreme conditions of temperature and density, i.e. on results obtained primarily from the Pb+Pb run. The ``standard picture'' of heavy ion collisions, based on studies at energies up to the highest available at RHIC, will be confronted with the newly available much higher energy data from the LHC. [Preview Abstract] |
Sunday, May 1, 2011 11:57AM - 12:33PM |
H2.00003: Charmonium-like States at the B-Factories Invited Speaker: Many charmonium-like states above the DD threshold have been discovered at the e$^{+}$e$^{-}$ B factories, BABAR and Belle. These states are produced in B decays, initial state radiation, two-photon production, or in double charmonium productions. The nature of these states still not yet been completely understood, and in some cases results are not always consistent. Among the new charmonium-like states, the Z(4430)$^{-}$, Z$_{1}$(4050)$^{-}$, and Z$_{2}$(4250)$^{-}$ states, reported by the Belle Collaboration, have generated a great deal of interest, because such states must have minimum quark content of cc dd, i.e. these are four-quark states. In this talk, I will give an overview on the new charmonium-like states that have been reported by the BABAR, Belle, CDF, and D0 Collaborations. [Preview Abstract] |
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