Show simple item record

dc.contributor.authorRYAN, SINEAD MARIE
dc.date.accessioned2008-10-09T15:44:24Z
dc.date.available2008-10-09T15:44:24Z
dc.date.issued2008-10-09T15:44:24Z
dc.date.submitted2000en
dc.identifier.issn0556-2821
dc.identifier.otherY
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/23000
dc.descriptionPUBLISHEDen
dc.description.abstractA lattice QCD calculation of the B? ?Dl?? decay form factors is presented. We obtain the value of the form factor h+(w) at the zero-recoil limit w=1 with high precision by considering a ratio of correlation functions in which the bulk of the uncertainties cancels. The other form factor h-(w) is calculated, for small recoil momenta, from a similar ratio. In both cases, the heavy quark mass dependence is observed through direct calculations with several combinations of initial and final heavy quark masses. Our results are h+(1)=1.007(6)(2)(3) and h-(1)=-0.107(28)(04)(3010). For both the first error is statistical; the second stems from the uncertainty in adjusting the heavy quark masses and the last from omitted radiative corrections. Combining these results, we obtain a precise determination of the physical combination FB?D(1)=1.058(1720), where the mentioned systematic errors are added in quadrature. The dependence on lattice spacing and the effect of quenching are not yet included, but with our method they should be a fraction of FB?D-1.en
dc.format.extent014502en
dc.format.extent173506 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.relation.ispartofseriesPhysical Review Den
dc.relation.ispartofseries61en
dc.rightsYen
dc.subjectPure & Applied Mathematicsen
dc.titleLattice QCD calculation of anti-B --> D lepton anti-neutrino decay form-factors at zero recoilen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/ryansin
dc.identifier.rssinternalid35118
dc.identifier.rssurihttp://dx.doi.org/10.1103/PhysRevD.61.014502


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record