Moving NRQCD and B to K* gamma

TL;DR

This paper introduces a boosted NRQCD formulation to compute B meson decay form factors over wider momentum ranges, presenting initial results for bottomonium using a novel moving NRQCD approach.

Contribution

It develops a moving NRQCD framework for B decay calculations and reports initial numerical results for bottomonium, enabling broader momentum transfer analysis.

Findings

Initial results for bottomonium quantities using moving NRQCD.

Demonstrated feasibility of calculating B to K* gamma form factors.

Outlined strategy and challenges for future calculations.

Abstract

The formulation of NRQCD discretized in a reference frame boosted relative to the B rest frame will enable calculation of B form factors over a larger range of momentum transfer. We have initiated a program to calculate form factors describing the rare decay B to K* gamma. We discuss the strategy and challenges of the project. As a first step in the numerical calculations, we present first results for bottomonium quantities using the O(Lambda_{QCD}^2/m^2, v_{NR}^4) moving NRQCD action.