Please use this identifier to cite or link to this item:
http://hdl.handle.net/2307/315
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lubicz, Vittorio | - |
dc.contributor.author | Mescia, Federico | - |
dc.contributor.author | Simula, Silvano | - |
dc.contributor.author | Tarantino, Cecilia | - |
dc.date.accessioned | 2010-07-13T09:14:09Z | - |
dc.date.available | 2010-07-13T09:14:09Z | - |
dc.date.issued | 2009-12 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2307/315 | - |
dc.description.abstract | We present new lattice results of the K ->pi l nu semileptonic formfactors obtained from simulations with two flavors of dynamicaltwisted-mass fermions, using pion masses as light as 260 MeV. Our mainresult is f(+)(0)=0.9560(84), which, combined with the latestexperimental data for K-l3 decays, leads to|V-us|=0.2267(5)(exp)(20)(f+)(0). Using the PDG(2008) determinations of|V-ud| and |V-ub| our result implies for the unitarity relation|V-ud|(2)+|V-us|(2)+|V-ub|(2)=1.0004(15). For the O(p(6)) term of thechiral expansion of f(+)(0) we get Delta f equivalent tof(+)(0)-1-f(2)=-0.0214(84). | en |
dc.language.iso | en | en |
dc.publisher | APS | en |
dc.relation.ispartof | Physical review D | en |
dc.subject | Twisted mass fermiIons | en |
dc.subject | light quarks | en |
dc.subject | theorem | en |
dc.subject | decays | en |
dc.title | K ->pi l nu semileptonic form factors from two-flavor lattice QCD | en |
dc.type | Article | en |
dc.subject.miur | Settori Disciplinari MIUR::Scienze fisiche | en |
dc.subject.miur | Scienze fisiche | - |
dc.subject.isicrui | Categorie ISI-CRUI::Scienze fisiche | en |
dc.subject.isicrui | Scienze fisiche | - |
dc.subject.anagraferoma3 | Scienze fisiche | en |
dc.relation.volumenumber | 80 | en |
dc.relation.pagenumber | 111502 | en |
dc.identifier.url | http://link.aps.org/doi/10.1103/PhysRevD.80.111502 | - |
dc.identifier.doi | 10.1103/PhysRevD.80.111502 | - |
dc.relation.issuenumber | 11 | en |
dc.description.romatrecurrent | Dipartimento di Fisica 'Edoardo Amaldi' | * |
item.languageiso639-1 | other | - |
item.fulltext | With Fulltext | - |
item.grantfulltext | restricted | - |
Appears in Collections: | A - Articolo su rivista X_Dipartimento di Fisica 'Edoardo Amaldi' |
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kl3_nf2.pdf | 481.8 kB | Adobe PDF | Request a copy |
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