Effect of Z'-mediated flavor-changing neutral current on B decays into Pi Pi

TL;DR

This paper investigates how Z'-mediated flavor-changing neutral currents can significantly enhance B decay branching ratios, aligning with recent experimental observations and suggesting potential new physics beyond the Standard Model.

Contribution

It presents a non-universal model showing substantial enhancement of B decay branching ratios due to Z'-mediated flavor-changing neutral currents, aligning with experimental data.

Findings

Branching ratios are significantly enhanced from SM predictions.

Enhanced branching ratios are close to recent experimental values.

Higher Z' coupling values lead to even larger branching ratios.

Abstract

We study the effect of -mediated flavor-changing neutral current on the decays. The branching ratios of these decays can be enhanced remarkably in the non-universal model. Our estimated branching ratios are enhanced significantly from their standard model (SM) value. For = 1, the branching ratios are very close to the recently observed experimental values and for higher values of branching ratios are more. Our calculated branching ratios and are also enhanced from the SM value as well as the recently observed experimental values. These enhancements of branching ratios from their SM value give the possibility of new physics.