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Up, down, strange and charm quark masses with N-f=2+1+1 twisted mass lattice QCD

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Up, down, strange and charm quark masses with N-f=2+1+1 twisted mass lattice QCD

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dc.contributor.author	Carrasco Vela, Nuria
dc.contributor.author	Deuzeman, A.
dc.contributor.author	Dimopoulos, P.
dc.contributor.author	Frezzotti, R.
dc.contributor.author	Giménez Gómez, Vicente
dc.contributor.author	Herdoiza, G.
dc.contributor.author	Lami, Paolo
dc.contributor.author	Lubicz, V.
dc.contributor.author	Palao Palomares, David
dc.contributor.author	Picca, E.
dc.contributor.author	Reker, S.
dc.contributor.author	Riggio, L.
dc.contributor.author	Rossi, G.C.
dc.contributor.author	Sanfilippo, F.
dc.contributor.author	Scorzato, L.
dc.contributor.author	Simula, S.
dc.contributor.author	Tarantino, C.
dc.contributor.author	Urbach, C.
dc.contributor.author	Wenger, U.
dc.date.accessioned	2015-07-06T11:13:01Z
dc.date.available	2015-07-06T11:13:01Z
dc.date.issued	2014
dc.identifier.citation	Carrasco Vela, Nuria Deuzeman, A. Dimopoulos, P. Frezzotti, R. Giménez Gómez, Vicente Herdoiza, G. Lami, Paolo Lubicz, V. Palao Palomares, David Picca, E. Reker, S. Riggio, L. Rossi, G.C. Sanfilippo, F. Scorzato, L. Simula, S. Tarantino, C. Urbach, C. Wenger, U. 2014 Up, down, strange and charm quark masses with N-f=2+1+1 twisted mass lattice QCD Nuclear Physics B 887 19 68
dc.identifier.uri	http://hdl.handle.net/10550/45120
dc.description.abstract	We present a lattice QCD calculation of the up, down, strange and charm quark masses performed using the gauge configurations produced by the European Twisted Mass Collaboration with N-f = 2 + 1 + 1 dynamical quarks, which include in the sea, besides two light mass degenerate quarks, also the strange and charm quarks with masses close to their physical values. The simulations are based on a unitary setup for the two light quarks and on a mixed action approach for the strange and charm quarks. The analysis uses data at three values of the lattice spacing and pion masses in the range 210-450 MeV, allowing for accurate continuum limit and controlled chiral extrapolation. The quark mass renormalization is carried out non-perturbatively using the RI'-MOM method. The results for the quark masses converted to the (MS) over bar scheme are: m(ud) (2 GeV) = 3.70(17) MeV, m(s)(2 GeV) = 99.6(4.3) MeV and m(c)(m(c)) = 1.348(46) GeV. We obtain also the quark mass ratios m(s)/m(ud) = 26.66(32) and m(c)/m(s) = 11.62(16). By studying the mass splitting between the neutral and charged kaons and using available lattice results for the electromagnetic contributions, we evaluate m(u)/m(d) = 0.470(56), leading to m(u) = 2.36(24) MeV and m(d) = 5.03(26) MeV.
dc.language.iso	eng
dc.relation.ispartof	Nuclear Physics B, 2014, vol. 887, p. 19-68
dc.subject	Física
dc.title	Up, down, strange and charm quark masses with N-f=2+1+1 twisted mass lattice QCD
dc.type	journal article	es_ES
dc.date.updated	2015-07-06T11:13:02Z
dc.identifier.doi	10.1016/j.nuclphysb.2014.07.025
dc.identifier.idgrec	106329
dc.rights.accessRights	open access	es_ES