2010/11/30 by Junjie Cao, Lei Wu, Jin Min Yang · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Quark #Spin (aerodynamics) #Top quark #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.83.034024
published as Phys.Rev.D83:034024,2011 · Version in PRD (figs updated and discussions added)
arxiv created 2011/02/07 · openalex publication_date 2011/02/22 · arxiv updated 2015/03/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Extensions of the standard model often predict new chiral interactions for top quarks, which will contribute to top quark spin correlation and polarization in tt production at the LHC. In this work, under the constraints from the current Tevatron measurements, a comparative study of the spin correlation and polarization is performed in three new physics models: the minimal supersymmetric model without R-parity, the third-generation enhanced left-right model, and the axigluon model. We find that the polarization asymmetry may be enhanced to the accessible level in all these models, while the correction to the spin correlation may be detectable in the axigluon model and the minimal supersymmetric model without R-parity with \ensuremathλ^\ensuremath'\ensuremath' couplings.