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Dynamical twisted mass fermions with light quarks

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Dynamical twisted mass fermions with light quarks

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dc.contributor.author	Boucaud, Ph.
dc.contributor.author	Dimopoulos, P.
dc.contributor.author	Farchioni, F.
dc.contributor.author	Frezzotti, R.
dc.contributor.author	Giménez Gómez, Vicente
dc.contributor.author	Herdoiza, G.
dc.contributor.author	Jansen, K.
dc.contributor.author	Lubicz, V.
dc.contributor.author	Martinelli, Guido
dc.contributor.author	McNeile, C.
dc.contributor.author	Michael, C.
dc.contributor.author	Montvay, I.
dc.contributor.author	Palao Palomares, David
dc.contributor.author	Papinutto, Mauro
dc.contributor.author	Pickavance, J.
dc.contributor.author	Rossi, G.C.
dc.contributor.author	Scorzato, L.
dc.contributor.author	Shindler, A.
dc.contributor.author	Simula, S.
dc.contributor.author	Urbach, C.
dc.contributor.author	Wenger, U.
dc.date.accessioned	2014-09-24T11:19:00Z
dc.date.available	2014-09-24T11:19:00Z
dc.date.issued	2007
dc.identifier.citation	Boucaud, Ph. Dimopoulos, P. Farchioni, F. Frezzotti, R. Giménez Gómez, Vicente Herdoiza, G. Jansen, K. Lubicz, V. Martinelli, G. McNeile, C. Michael, C. Montvay, I. Palao Palomares, David Papinutto, Mauro Pickavance, J. Rossi, G.C. Scorzato, L. Shindler, A. Simula, S. Urbach, C. Wenger, U. 2007 Dynamical twisted mass fermions with light quarks Physics Letters B 650 4 304 311
dc.identifier.uri	http://hdl.handle.net/10550/38955
dc.description.abstract	We present results of dynamical simulations of N-f = 2 degenerate Wilson twisted mass quarks at maximal twist in the range of pseudo scalar masses 300 MeV less than or similar to mps; 550 MeV less than or similar to Reaching such small masses was made possible owing to a recently developed variant of the HNIC algorithm. The simulations are performed at one value of the lattice spacing a less than or similar to 0. 1 fun. In order to have O(a) improvement and aiming at small residual O(a(2)) cutoff effects, the theory is tuned to maximal twist by requiring the vanishing of the untwisted quark mass. Precise results for the pseudo scalar decay constant and the pseudo scalar mass are confronted with chiral perturbation theory predictions and the low energy constants F, (l) over bar (3) and (l) over bar (4) are evaluated with small statistical errors.
dc.language.iso	eng
dc.relation.ispartof	Physics Letters B, 2007, vol. 650, num. 4, p. 304-311
dc.subject	Física
dc.title	Dynamical twisted mass fermions with light quarks
dc.type	journal article	es_ES
dc.date.updated	2014-09-24T11:19:00Z
dc.identifier.doi	10.1016/j.physletb.2007.04.054
dc.identifier.idgrec	041518
dc.rights.accessRights	open access	es_ES