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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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.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.rights.uri info:eu-repo/semantics/openAccess
dc.source 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.subject Física
dc.title Up, down, strange and charm quark masses with N-f=2+1+1 twisted mass lattice QCD
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-07-06T11:13:02Z
dc.identifier.doi http://dx.doi.org/10.1016/j.nuclphysb.2014.07.025
dc.identifier.idgrec 106329

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