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2011-07-19

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131796

K∗ vector and tensor couplings from Nf=2 twisted mass QCD

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https://doi.org/10.1103/PhysRevD.84.014505

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 ) .

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Física de partícules, Experiments

Subject (English)

Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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DIMOPOULOS, P., MESCIA, Federico and VLADIKAS, A. K∗ vector and tensor couplings from Nf=2 twisted mass QCD. Physical Review D. 2011. Vol. 84, num. 1, pags. 014505. ISSN 1550-7998. [consulted: 14 of August of 2026]. Available at: https://hdl.handle.net/2445/131796

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