Form factors and charge radii in a quantum chromodynamics-inspired potential model using variationally improved perturbation theory

Pramana

D K choudhury1¹  Bhaskar Jyoti Hazarika1¹ 

[1]Centre for Theoretical Studies, Pandu College, Guwahati 781 012, India$$

关键词: Variationally improved perturbation theory;    form factor;    charge radii.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We use variationally improved perturbation theory (VIPT) for calculating the elastic form factors and charge radii of 𝐷, $D_{s}$, $B$, $B_{s}$ and $B_{c}$ mesons in a quantum chromodynamics (QCD)-inspired potential model. For that, we use linear-cum-Coulombic potential and opt the Coulombic part first as parent and then the linear part as parent. The results show that charge radii and form factors are quite small for the Coulombic parent compared to the linear parent. Also, the analysis leads to a lower as well as upper bounds on the four-momentum transfer 𝑄2, hinting at a workable range of 𝑄2 within this approach, which may be useful in future experimental analyses. Comparison of both the options shows that the linear parent is the better option.

【 授权许可】

Unknown