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Kaon mixing beyond the SM from N-f=2 tmQCD and model independent constraints from the UTA

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Kaon mixing beyond the SM from N-f=2 tmQCD and model independent constraints from the UTA

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dc.contributor.author	Bertone, V.
dc.contributor.author	Carrasco Vela, Nuria
dc.contributor.author	Ciuchini, M.
dc.contributor.author	Dimopoulos, P.
dc.contributor.author	Frezzotti, R.
dc.contributor.author	Giménez Gómez, Vicente
dc.contributor.author	Lubicz, V.
dc.contributor.author	Martinelli, Guido
dc.contributor.author	Mescia, Federico
dc.contributor.author	Papinutto, Mauro
dc.contributor.author	Rossi, G.C.
dc.contributor.author	Silvestrini, L.
dc.contributor.author	Simula, S.
dc.contributor.author	Tarantino, C.
dc.contributor.author	Vladikas, A.
dc.date.accessioned	2014-02-19T10:42:15Z
dc.date.available	2014-02-19T10:42:15Z
dc.date.issued	2013
dc.identifier.citation	Bertone, V. Carrasco Vela, Nuria Ciuchini, M. Dimopoulos, P. Frezzotti, R. Giménez Gómez, Vicente Lubicz, V. Martinelli, G. Mescia, Federico Papinutto, Mauro Rossi, G.C. Silvestrini, L. Simula, S. Tarantino, C. Vladikas, A. 2013 Kaon mixing beyond the SM from N-f=2 tmQCD and model independent constraints from the UTA Journal of High Energy Physics 03 3 089-1 089-53
dc.identifier.uri	http://hdl.handle.net/10550/33086
dc.description.abstract	We present the first unquenched, continuum limit, lattice QCD results for the matrix elements of the operators describing neutral kaon oscillations in extensions of the Standard Model. Owing to the accuracy of our calculation on Delta S = 2 weak Hamiltonian matrix elements, we are able to provide a refined Unitarity Triangle analysis improving the bounds coming from model independent constraints on New Physics. In our non-perturbative computation we use a combination of N-f = 2 maximally twisted sea quarks and Osterwalder-Seiler valence quarks in order to achieve both O(a)-improvement and continuum-like renormalization properties for the relevant four-fermion operators. The calculation of the renormalization constants has been performed non-perturbatively in the RI-MOM scheme. Based on simulations at four values of the lattice spacing and a number of quark masses we have extrapolated/interpolated our results to the continuum limit and physical light/strange quark masses.
dc.relation.ispartof	Journal of High Energy Physics, 2013, vol. 03, num. 3, p. 089-1 -089-53
dc.subject	Física
dc.title	Kaon mixing beyond the SM from N-f=2 tmQCD and model independent constraints from the UTA
dc.type	journal article	es_ES
dc.date.updated	2014-02-19T10:42:15Z
dc.identifier.doi	10.1007/JHEP03(2013)089
dc.identifier.idgrec	091296
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1007/JHEP03(2013)089