第九届中国LHC物理年会 The 9th China LHC Physics Workshop (CLHCP2023)

Precise prediction for the top quark width

Nov 17, 2023, 5:20 PM

20m

Function Room 9 光大9号厅 (2nd Floor 光大二楼)

Theory

Speaker

烨凡 王 (Shandong university)

Description

We present the first analytic results of N3LO QCD corrections to the top-quark decay width. We focus on the dominant leading color contribution, which includes light-quark loops. At NNLO, this dominant contribution accounts for 95% of the total correction. The most precise prediction for the top-quark width is now 1.321 GeV for mt = 172.69 GeV.

Presentation materials

2023_11_17_Wang.pdf