A set of top quark spin correlation and polarization observables for the LHC: Standard Model predictions and new physics contributions

作者：Bernreuther Werner; Heisler Dennis; Si Zong Guo

来源：The Journal of High Energy Physics, 2015, 2015(12): 026.

DOI：10.1007/JHEP12(2015)026

• Hadronic Colliders
• NLO Computations

We consider top-antitop quark (t (t) over bar) production at the Large Hadron Collider (LHC) with subsequent decay into dileptonic and lepton plus jets final states. We present a set of leptonic angular correlations and distributions with which experiments can probe all the independent coefficient functions of the top-spin dependent parts of the t (t) over bar production spin density matrices. We compute these angular correlations and distributions for LHC center-of-mass energies 8, 13, and 14TeV within the Standard Model at next-to-leading order in the QCD coupling including the mixed QCD-weak corrections and for the transverse top-quark polarization and the t (t) over bar charge asymmetry also the mixed QCD-QED corrections. In addition we analyze and compute the effects of new interactions on these observables in terms of a gauge-invariant effective Lagrangian that contains all operators relevant for hadronic t (t) over bar production up to mass dimension six.

• 出版日期2015-12-4
• 单位山东大学