B-K-parameter from N-f=2 twisted mass lattice QCD
NAGIOS: RODERIC FUNCIONANDO

B-K-parameter from N-f=2 twisted mass lattice QCD

Repositori DSpace/Manakin

B-K-parameter from N-f=2 twisted mass lattice QCD

Mostra el registre complet de l'element

Visualització       (493.7Kb)

Exportar a Refworks
    
Constantinou, M.; Dimopoulos, P.; Frezzotti, R.; Jansen, K.; Giménez Gómez, Vicente; Lubicz, V.; Mescia, Federico; Panagopoulos, H.; Papinutto, Mauro; Rossi, G.C.; Simula, S.; Skouroupathis, A.; Stylianou, F.; Vladikas, A.
Aquest document és un/a article, creat/da en: 2011
We present an unquenched N-f = 2 lattice computation of the B-K parameter which controls K-0 - (K) over bar (0) oscillations. A partially quenched setup is employed with two maximally twisted dynamical (sea) light Wilson quarks, and valence quarks of both the maximally twisted and the Osterwalder-Seiler variety. Suitable combinations of these two kinds of valence quarks lead to a lattice definition of the B-K parameter which is both multiplicatively renormalizable and O(a) improved. Employing the nonperturbative RI-MOM scheme, in the continuum limit and at the physical value of the pion mass we get B-K(RGI) = 0.729 +/- 0.030, a number well in line with the existing quenched and unquenched determinations.

    Constantinou, M. Dimopoulos, P. Frezzotti, R. Jansen, K. Giménez Gómez, Vicente Lubicz, V. Mescia, Federico Panagopoulos, H. Papinutto, Mauro Rossi, G.C. Simula, S. Skouroupathis, A. Stylianou, F. Vladikas, A. 2011 B-K-parameter from N-f=2 twisted mass lattice QCD Physical Review D 83 1 014505
http://dx.doi.org/10.1103/PhysRevD.83.014505
distribuït sota llicència Creative Commons de Reconeixement-NoComercial 3.0 No adaptada

Aquest element apareix en la col·lecció o col·leccions següent(s)

Mostra el registre complet de l'element

Cerca a RODERIC

Cerca avançada

Visualitza

Estadístiques