Top-quark production at threshold

• Grant number: 22/01445-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2022
• End date: December 31, 2023
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Diogo Rodrigues Boito
• Grantee: Marcelle Caram Patriota
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 21/06756-6 - Testing the standard model: precision QCD and muon g-2, AP.JP2

Abstract

The top quark was the last fermion to be discovered and is the heaviest elementary particle that is known. Its mass is a fundamental parameter of the standard model and the its precise knowledge will be crucial for future precision tests of the theory. The most promising strategy to determine the mass precisely is from the measurement of the cross-section for e+e- --> t bar t close to the threshold, which could be done in future accelerators. In the present project, the student will apply the classic framework to describe this cross-section in leading order and understand how the top quark mass can be determined from this analysis.(AU)