The University of Southampton
University of Southampton Institutional Repository

Heavy-strange meson decay constants in the continuum limit of quenched QCD

Heavy-strange meson decay constants in the continuum limit of quenched QCD
Heavy-strange meson decay constants in the continuum limit of quenched QCD
We improve a previous quenched result for heavy-light pseudoscalar meson decay constants with the light quark taken to be the strange quark. A finer lattice resolution (a ? 0.05 fm) in the continuum limit extrapolation of the data computed in the static approximation is included. We also give further details concerning the techniques used in order to keep the statistical and systematic errors at large lattice sizes L/a under control. Our final result, obtained by combining these data with determinations of the decay constant for pseudoscalar mesons around the Ds, follows nicely the qualitative expectation of the 1/m-expansion with a (relative) 1/m-term of about ?0.5GeV/mPS. At the physical b-quark mass we obtain FBs = 193(7)MeV, where all errors apart from the quenched approximation are included.
nonperturbative effects, b-physics, lattice QCD, heavy quarks physics
1-28
Morte, Michele Della
c950f6c4-6ec9-40ac-86f0-eef29ac2ec09
Dürr, Stephan
3c3b7060-a99b-4a36-a279-04ba46dd93e5
Guazzini, Damiano
1715b8d1-b547-4938-b590-7ffc7eed747c
Sommer, Rainer
1b793a87-4321-4602-b30c-d5157c4d02a2
Heitger, Jochen
e42a735a-3069-4e79-ad97-6288831cfa5f
Jüttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
The ALPHA Collaboration
Morte, Michele Della
c950f6c4-6ec9-40ac-86f0-eef29ac2ec09
Dürr, Stephan
3c3b7060-a99b-4a36-a279-04ba46dd93e5
Guazzini, Damiano
1715b8d1-b547-4938-b590-7ffc7eed747c
Sommer, Rainer
1b793a87-4321-4602-b30c-d5157c4d02a2
Heitger, Jochen
e42a735a-3069-4e79-ad97-6288831cfa5f
Jüttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247

Morte, Michele Della, Dürr, Stephan, Guazzini, Damiano, Sommer, Rainer, Heitger, Jochen and Jüttner, Andreas , The ALPHA Collaboration (2008) Heavy-strange meson decay constants in the continuum limit of quenched QCD. Journal of High Energy Physics, 2008 (2), 1-28. (doi:10.1088/1126-6708/2008/02/078).

Record type: Article

Abstract

We improve a previous quenched result for heavy-light pseudoscalar meson decay constants with the light quark taken to be the strange quark. A finer lattice resolution (a ? 0.05 fm) in the continuum limit extrapolation of the data computed in the static approximation is included. We also give further details concerning the techniques used in order to keep the statistical and systematic errors at large lattice sizes L/a under control. Our final result, obtained by combining these data with determinations of the decay constant for pseudoscalar mesons around the Ds, follows nicely the qualitative expectation of the 1/m-expansion with a (relative) 1/m-term of about ?0.5GeV/mPS. At the physical b-quark mass we obtain FBs = 193(7)MeV, where all errors apart from the quenched approximation are included.

Full text not available from this repository.

More information

Published date: 20 February 2008
Keywords: nonperturbative effects, b-physics, lattice QCD, heavy quarks physics
Organisations: Theoretical Partical Physics Group

Identifiers

Local EPrints ID: 339206
URI: https://eprints.soton.ac.uk/id/eprint/339206
PURE UUID: 699f6d18-88fb-42a8-8052-4d16b3385c98

Catalogue record

Date deposited: 25 May 2012 09:01
Last modified: 18 Jul 2017 05:54

Export record

Altmetrics

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

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 https://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.

×