Beauty Vector Meson Decay Constants from QCD Sum Rules

TL;DR

This paper uses QCD sum rules to calculate decay constants of beauty vector mesons, focusing on ratios to pseudoscalar mesons, finding these ratios are below one, which enhances understanding of heavy-light meson properties.

Contribution

It provides new QCD sum rule calculations of decay constant ratios for beauty vector and pseudoscalar mesons, highlighting their values below unity.

Findings

Ratios of vector to pseudoscalar decay constants are below one.

Results improve understanding of heavy-light meson decay properties.

QCD sum rules effectively estimate decay constants.

Abstract

We present the outcomes of a very recent investigation of the decay constants of nonstrange and strange heavy-light beauty vector mesons, with special emphasis on the ratio of any such decay constant to the decay constant of the corresponding pseudoscalar meson, by means of Borel-transformed QCD sum rules. Our results suggest that both these ratios are below unity.