K∗ vector and tensor couplings from Nf=2 twisted mass QCD
| dc.contributor.author | Dimopoulos, P. | |
| dc.contributor.author | Mescia, Federico | |
| dc.contributor.author | Vladikas, A. | |
| dc.date.accessioned | 2019-04-08T12:12:21Z | |
| dc.date.available | 2019-04-08T12:12:21Z | |
| dc.date.issued | 2011-07-19 | |
| dc.date.updated | 2019-04-08T12:12:21Z | |
| dc.description.abstract | The mass m K ∗ and vector coupling f K ∗ of the K ∗ meson, as well as the ratio of the tensor to vector couplings f T f V | K ∗ , are computed in lattice QCD. Our simulations are performed in a partially quenched setup, with two dynamical (sea) Wilson quark flavors, having a maximally twisted mass term. Valence quarks are either of the standard or the Osterwalder-Seiler maximally twisted variety. Results obtained at three values of the lattice spacing are extrapolated to the continuum, giving m K ∗ = 981 ( 33 ) MeV , f K ∗ = 240 ( 18 ) MeV , and f T ( 2 GeV ) f V | K ∗ = 0.704 ( 41 ) . | |
| dc.format.extent | 7 p. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.idgrec | 623814 | |
| dc.identifier.issn | 1550-7998 | |
| dc.identifier.uri | https://hdl.handle.net/2445/131796 | |
| dc.language.iso | eng | |
| dc.publisher | American Physical Society | |
| dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.84.014505 | |
| dc.relation.ispartof | Physical Review D, 2011, vol. 84, num. 1, p. 014505 | |
| dc.relation.uri | https://doi.org/10.1103/PhysRevD.84.014505 | |
| dc.rights | (c) American Physical Society, 2011 | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | |
| dc.subject.classification | Física de partícules | |
| dc.subject.classification | Experiments | |
| dc.subject.other | Particle physics | |
| dc.subject.other | Experiments | |
| dc.title | K∗ vector and tensor couplings from Nf=2 twisted mass QCD | |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |
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