Complete gluon bremsstrahlung corrections to the processb→sl+l−

Complete gluon bremsstrahlung corrections to the process b → s l + l − ∗

In a recent paper [1], we presented the calculation of the O(α s) virtual corrections to b → s ℓ + ℓ − and of those bremsstrahlung terms which are needed to cancel the infrared divergences. In the present paper we work out the remaining O(α s) bremsstrahlung corrections to b → s ℓ + ℓ − , which do not suffer from infrared and collinear singularities. These new contributions turn out to be small...

Bremsstrahlung corrections to the decay b → sγ

We calculate the O(αs) gluon Bremsstrahlung corrections to the inclusive decay b → sγ, involving the full operator basis Ô1 – Ô8. Confirming and extending earlier calculations of Ali and Greub, we give formulas for the total decay width as well as the perturbative photon spectrum, regarding the former as a necessary part of the forthcoming complete NLO analysis. We explore in detail the renorma...

Bremsstrahlung Corrections to the Decay B ! Ss

We calculate the O(s) gluon Bremsstrahlung corrections to the inclusive decay b ! ss, involving the full operator basis ^ O 1 { ^ O 8. Connrming and extending earlier calculations of Ali and Greub, we give formulas for the total decay width as well as the perturbative photon spectrum, regarding the former as a necessary part of the forthcoming complete NLO analysis. We explore in detail the ren...

Radiative Corrections to Bremsstrahlung in Radiative Return

Radiating a photon from the initial state provides a useful tool for studying a range of low energy physics using a high-energy ee accelerator. Accurate results require careful calculation of the first order virtual photon corrections. We compare exact results for initial state radiative corrections, finding agreement to an order of 10 or better as a fraction of the Born cross-section for most ...

Complete bremsstrahlung corrections to the forward - backward asymmetries in b → X s l + l −