2006/12/31 by V. Barger, Vernon Barger, Tao Han +1 · 1 citation
Physics and Astronomy · #Asymmetry #Gauge (firearms) #Hadron #High-Energy Particle Collisions Research #Invariant (physics) #Invariant mass #Large Hadron Collider #Mathematical physics #Nuclear physics #Pair production #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Quark #Standard Model (mathematical formulation) #Top quark #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevlett.100.031801
published as Phys.Rev.Lett.100:031801,2008 · 5 pages, 4 figures; version to appear in PRL
arxiv created 2007/12/12 · openalex publication_date 2008/01/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study top-quark pair production to probe new physics at the CERN Large Hadron Collider. We propose reconstruction methods for tt[over] semileptonic events and use them to reconstruct the tt[over] invariant mass. The angular distribution of top quarks in their c.m. frame can determine the spin and production subprocess for each new physics resonance. Forward-backward asymmetry and CP-odd variables can be constructed to further delineate the nature of new physics. We parametrize the new resonances with a few generic parameters and show high invariant mass top pair production may provide an early indicator for new physics beyond the standard model.