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http://hdl.handle.net/2445/131796| Title: | K∗ vector and tensor couplings from Nf=2 twisted mass QCD |
| Author: | Dimopoulos, P. Mescia, Federico Vladikas, A. |
| Keywords: | Física de partícules Experiments Particle physics Experiments |
| Issue Date: | 19-Jul-2011 |
| Publisher: | American Physical Society |
| 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 ) . |
| Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.84.014505 |
| It is part of: | Physical Review D, 2011, vol. 84, num. 1, p. 014505 |
| URI: | http://hdl.handle.net/2445/131796 |
| Related resource: | https://doi.org/10.1103/PhysRevD.84.014505 |
| ISSN: | 1550-7998 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 623814.pdf | 532.99 kB | Adobe PDF | View/Open |
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