arXiv subjects

H. S. Do

Publications and source records attributed to H. S. Do.

2 recordsLinked to original sources

arXiv2002

Electroweak and finite width corrections to top quark decays into transverse and longitudinal $ W $-bosons

We calculate the electroweak and finite width corrections to the decay of an unpolarized top quark into a bottom quark and a $ W $-gauge boson where the helicities of the $ W $ are specified as longitudinal, transverse-plus and transverse-minus. Together with the $ O(α_s) $ corrections these corrections may become relevant for the determination of the mass of the top quark through angular decay measurements.

hep-ph↗

arXiv2001

One-loop integrals with XLOOPS-GiNaC

We present a new algorithm for the reduction of one-loop tensor Feynman integrals within the framework of the XLOOPS project, covering both mathematical and programming aspects. The new algorithm supplies a clean way to reduce the one-loop one-, two- and three-point Feynman integrals with arbitrary tensor rank and powers of the propagators to a basis of simple integrals. We also present a new method of coding XLOOPS in C++ using the GiNaC library.

hep-ph↗