2024-03-29T02:22:35Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/266132017-01-19T07:52:14Zcom_10261_61com_10261_4col_10261_314
Light hadrons from lattice QCD with light (u, d), strange and charm dynamical quarks
Giménez Gómez, Vicente
Baron, R.
Boucaud, Ph.
Carbonell, J.
Deuzeman, A.
Drach, V.
Farchioni, F.
Herdoiza, Gregorio
Jansen, K.
McNeile, C.
Michael, C.
Montvay, I.
Palao, David
Pallante, Elisabetta
Pène, O.
Reker, S.
Urbach, C.
Wagner, M.
Wenger, U.
ETM collaboration
Lattice QCD
Lattice gauge theory
Light hadrons
Charm quark
Chiral perturbation theory
Chiral lagrangians
We present results of lattice QCD simulations with mass-degenerate up and down and mass-split strange and charm (N_f = 2+1+1) dynamical quarks using Wilson twisted mass fermions at maximal twist. The tuning of the strange and charm quark masses is performed at two values of the lattice spacing a~0.078 fm and a~0.086 fm with lattice sizes ranging from L~1.9 fm to L~2.8 fm. We measure with high statistical precision the light pseudoscalar mass m_PS and decay constant f_PS in a range 270 < m_PS < 510 MeV and determine the low energy parameters f_0, l_3 and l_4 of SU(2) chiral perturbation theory. We use the two values of the lattice spacing, several lattice sizes as well as different values of the light, strange and charm quark masses to explore the systematic effects. A first study of discretisation effects in light-quark observables and a comparison to N_f=2 results are performed.
2010-07-27T10:54:29Z
2010-07-27T10:54:29Z
2010-06
artículo
Journal of High Energy Physics 5 (111): 1-31 (2010)
1126-6708
http://hdl.handle.net/10261/26613
10.1007/JHEP06(2010)111
eng
http://dx.doi.org/10.1007/JHEP06(2010)111
openAccess
Springer