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arXiv 1902.02079hep-ph
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重味介子的质量和衰变常数的微扰计算

Masses and Decay constants of Heavy Flavour mesons in perturbative approach

Jugal Lahkar, D K Choudhury, B J Hazarika

摘要:

确定波函数是计算赝标介子质量、衰变常数和矢量介子质量等静态和动态性质的关键,本文用Dalgarno微扰理论和变分改进微扰理论(VIPT)求解了QCD激发的Cornell势模型中的Schrodinger方程。在VIPT方法中,我们采用了先用库仑势,再用线性势的方法。这两种方法的比较,并与实验结果进行了质量和衰变常数的计算。

英文摘要:

Determination of the wave-function is very essential in the calculation of static and dynamic properties like masses,decay constants of pseudo-scalar mesons and masses of vector mesons.We use Dalgarno's perturbation theory and Variation-ally Improved Perturbation Theory (VIPT) to solve Schrodinger equation in a QCD inspired potential model wuth Cornell potential,which consists linear and coulomb potential.We use both the options like Columbic parent firstly and then linear parent while using the VIPT method. Comparison of both these methods and also with experimental results are done in the calculation of masses and decay constants.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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