| Sunday 18 May 2025 | |
| Events for day: Monday 19 May 2025 |
| 11:00 - 12:00 Journal Club: Experiment & Phenomenology – Hybrid Format Top quark decay at next-to-leading order in the standard model effective field theory School PARTICLES AND ACCELERATORS Abstract: In this paper, they consider top quark decay in the standard model effective field theory (SMEFT). They present a calculation of the total decay width and the W-boson helicity fractions at next-to-leading order (NLO) in SMEFT. Their result includes the complete set of contributing four-fermion operators in addition to QCD dipole operators and bottom-mass suppressed effects. They show that operators that first appear at NLO in the SMEFT can be bounded by the current data as well as future data from both a high-luminosity LHC and a potential e+e? collider, demonstrating the importance of going beyond leading order when ... |