The University of Southampton
×
Filter your search:
University of Southampton Institutional Repository

Universality of nonperturbative QCD effects in radiative B decays

Universality of nonperturbative QCD effects in radiative B decays
Universality of nonperturbative QCD effects in radiative B decays
We demonstrate, by an explicit one-loop calculation, that at leading twist the nonperturbative effects in B → γℓνℓ, B →  γγ and B → γℓ+ℓ- radiative decays are contained in a common multiplicative factor (ΛB(Eγ), where Eγ is the energy of the photon). We argue that this result holds also at higher orders. Ratios of the amplitudes for these processes do not depend on scales below the mass of the B-meson (MB), and can be calculated as perturbative series in αs(MB).
0370-2693
213-223
Descotes-Genon, S.
a171961a-825b-4771-bd1e-60eb9f45bd87
Sachrajda, C.T.
0ed6568b-f52f-4314-8677-4aeeb925d6f7
Descotes-Genon, S.
a171961a-825b-4771-bd1e-60eb9f45bd87
Sachrajda, C.T.
0ed6568b-f52f-4314-8677-4aeeb925d6f7

Descotes-Genon, S. and Sachrajda, C.T. (2003) Universality of nonperturbative QCD effects in radiative B decays. Physics Letters B, 557 (3-4), 213-223. (doi:10.1016/S0370-2693(03)00173-4).

Record type: Article

Abstract

We demonstrate, by an explicit one-loop calculation, that at leading twist the nonperturbative effects in B → γℓνℓ, B →  γγ and B → γℓ+ℓ- radiative decays are contained in a common multiplicative factor (ΛB(Eγ), where Eγ is the energy of the photon). We argue that this result holds also at higher orders. Ratios of the amplitudes for these processes do not depend on scales below the mass of the B-meson (MB), and can be calculated as perturbative series in αs(MB).

This record has no associated files available for download.

More information

Published date: 3 April 2003
Learn more about Physics & Astronomy research

Identifiers

Local EPrints ID: 57168
URI: http://eprints.soton.ac.uk/id/eprint/57168
DOI: doi:10.1016/S0370-2693(03)00173-4
ISSN: 0370-2693
PURE UUID: dda0409f-dc95-4d21-8607-d651f7684361

Catalogue record

Date deposited: 14 Aug 2008
Last modified: 15 Mar 2024 11:05

Export record

Altmetrics

Contributors

Author: S. Descotes-Genon
Author: C.T. Sachrajda

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Library staff additional information
Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×