Programme

P.82 -- Posters, VCTP-51

Date: Thursday, 6 August 2026

Time: 09:30 - 10:30

One-loop gauge boson contributions to decays h \to e_ae_b in the general gauge R_\xi

Lê Thọ Huệ, Nguyễn Thị Thắm, Trịnh Thị Hồng, Nguyễn Hứa Thanh Nhã

Trường Đại học Văn Lang, Đại học Sư phạm Hà Nội 2, Đại học An Giang

Analytic formulas to express one-loop contributions to lepton flavor violating decays of the Standard Model-like Higgs boson h \to e_a e_b are calculated in the general gauge R_\xi for the general seesaw version of the Standard Model. The calculation is performed using the Passarino-Veltman functions, which include various well-known relations useful for analytic transformations. This calculation also requires precise forms of the couplings of the Goldstone boson of W^\pm, which are model-dependent. We demonstrate analytically that the final result is gauge-independent, namely, the free unphysical parameter \xi of the R_\xi gauge vanishes completely. Moreover, the resulting decay amplitude is consistent with those previously calculated in different gauges, including the unitary gauge.

Presenter: Trịnh Thị Hồng