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dc.contributor.authorBlossier, Benoit-
dc.contributor.authorDimopoulos, Petros-
dc.contributor.authorFrezzotti, Roberto-
dc.contributor.authorHerdoiza, Gregorio-
dc.contributor.authorJansen, Karl-
dc.contributor.authorLubicz, Vittorio-
dc.contributor.authorMartinelli, Guido-
dc.contributor.authorMichael, Chris-
dc.contributor.authorRossi, Giancarlo-
dc.contributor.authorSanfilippo, Francesco-
dc.contributor.authorShindler, Andrea-
dc.contributor.authorSimula, Silvano-
dc.contributor.authorTarantino, Cecilia-
dc.contributor.authorUrbach, Carsten-
dc.contributor.authorWagner, Marc-
dc.description.abstractWe present a lattice QCD calculation of the heavy-light decay constants fB and fBs performed with Nf = 2 maximally twisted Wilson fermions, at four values of the lattice spacing. The decay constants have been also computed in the static limit and the results are used to interpolate the observables between the charmand the infinite-mass sectors, thus obtaining the value of the decay constants at the physical b quark mass. Our preliminary results are fB = 191(14)MeV, fBs = 243(14)MeV, fBs/ fB = 1.27(5). They are in good agreement with those obtained with a novel approach, recently proposed by our Collaboration (ETMC), based on the use of suitable ratios having an exactly known static limit.en
dc.publisherProceedings of Science SISSAen
dc.subjectLattice QCDen
dc.subjectHeavy Quark Physicsen
dc.subjectFlavour Physicsen
dc.subjectDecay Constantsen
dc.titlefB and fBs with maximally twisted Wilson fermionsen
dc.subject.miurSettori Disciplinari MIUR::Scienze fisiche::FISICA TEORICA, MODELLI E METODI MATEMATICIen
dc.subject.isicruiCategorie ISI-CRUI::Scienze fisiche::Physicsen
dc.subject.anagraferoma3Scienze fisicheen
dc.relation.conferencenameThe XXVII International Symposium on Lattice Field Theory - LAT2009en
dc.relation.conferenceplacePeking University, Beijing, Chinaen
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