2000/05/09 by D. Cinabro, Cinabro, D.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0005015
6 pages, 2 figures, Submission to LCWS99
arxiv created 2000/05/09 · openalex publication_date 2000/05/09 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
One of the problems in the design of a high energy e+e- linear collider is the distribution of the luminosity as a function of real collision energy, dL/dE, due to initial state radiation, beamstrahlung, and the energy spread of the collider. These effects smear a sharp feature in the cross section of e+e- -> hadrons such as the ttbar threshold into a flatter structure. This study reviews the impact on dL/dE of these effects as a function of machine parameters, explores some methods of measuring dL/dE with Bhabha scattering, how the dL/dE flattens the ttbar cross section near threshold, and the effect the dL/dE measurement has on extracting parameters of the top quark, such as the mass and width, in a 2.5/fb scan of the ttbar threshold.