核与粒子物理学术报告会 82

作者: 时间:2019-09-11 点击数:

 

Nuclear and Particle Physics Colloquium   82

 

(核与粒子物理学术报告会82)

 

Place: C826, National Laboratory II, Sha-He Campus, Beihang University

 

Time: 16:00-17:30, September 12, 2019

 

Title: Weak decays of heavy baryon in the light front quark model

 

Speaker: Prof. Hong-Wei Ke

 

 

Abstract:

 

Light-front quark model is a relativistic quark model based on the light-front QCD. The basic ingredient is the hadron light-front wave function which is explicitly Lorentz-invariant. The hadron spin is constructed using the Melosh rotation. The light-front approach has been widely applied to calculate various decay constants and form factors for the meson cases.

 

We extended the light-front quark model to study the weak decays of Λb and Σb in the heavy-quark-light-diquark picture of baryon. Our results are consistent with those given in the literature. The application of the extension of the light-front quark model to baryon has achieved a preliminary success. In a recent work, we treat the three quarks as individual ones and possess their own color indices, spin polarizations (or helicities) and momenta. In one word, we make a three-body calculation rather than a two-body one.

 

 

 

About speaker:

 

Hong-Wei Ke is a Professor of Physics at Tianjin University who studies Theoretical Physics, with a focus on particle physics. He works on the weak decays of baryon, the radiative decay of meson, exotic states and their strong decays, Bethe-Salpeter equation, light-front quark model and the relation between CKM and PMNS.

 

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