Speaker
Zhenyu Han
(Harvard University)
Description
We explore methods for improving the top quark forward-backward asymmetry measurement at the LHC. We identify variables which distinguish top pairs produced from gluons versus quarks. These variables include the top quark rapidity, mass and rapidity of the top-antitop system, the top quark polarization and the top-antitop spin correlation. We obtain the best axes for measuring the top quark polarization and the top-antitop spin correlation. We apply our methods on two representative models: the axigluon model and the W-prime model, and show that significant improvements on the top quark forward-backward asymmetry measurement at the LHC can be achieved.
