July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Measuring Polarized Gluon Distributions by Heavy Quark Spin Correlations and Polarizations

Jul 31, 2017, 11:45 AM
15m
1 East (Fermi National Accelerator Laboratory)

1 East

Fermi National Accelerator Laboratory

Presentation Top Quark Physics Top Quark Physics

Speaker

Prof. Gary Goldstein (Tufts University)

Description

The production of heavy flavor quark pairs, including top-anti-top, at the LHC proceeds primarily through gluon fusion. The correlation between the gluon spins affects various spin correlations between the produced quark and anti-quark. Both single spin asymmetries and double correlations of the quark pair spins will be manifest in the subsequent hadronization and decay distributions. For top pairs this is most pronounced. Dilepton, single lepton, and purely hadronic top pair decay channels allow for the extraction of gluon spin information as well as providing a window into possible interactions Beyond the Standard Model. The derivations of many spin related asymmetries and polarizations will be presented. The implications for experimental determination will be discussed.

Primary author

Prof. Gary Goldstein (Tufts University)

Presentation materials