Anti-B --> X(s) gamma: Standard Model and Beyond

TL;DR

This paper reviews recent theoretical advances in calculating the inclusive anti-B --> X(s) gamma decay within the Standard Model and explores potential beyond Standard Model contributions, focusing on higher-order corrections and their implications.

Contribution

It provides a comprehensive summary of the latest calculations of higher-order QCD corrections and discusses beyond Standard Model effects on the decay process.

Findings

Next-to-next-to-leading order corrections are crucial for precise predictions.

Non-local power corrections significantly impact decay rate calculations.

Beyond Standard Model scenarios can alter the decay rate predictions.

Abstract

We present a concise review of the recent theoretical progress concerning the standard model calculation of the inclusive radiative anti-B --> X(s) gamma decay. Particular attention is thereby devoted to the calculations of the next-to-next-to-leading order fixed-order O(alpha_s^2) contributions, non-local O(alpha_s Lambda/m_b) power corrections, and logarithmic-enhanced O(alpha_s^2) cut-effects to the decay rate. The current status of various beyond the standard model calculations of the inclusive b --> s gamma mode is also summarized.