(pi)K scattering in full QCD with domain-wall valence quarks.

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RECERCAT Principal > Universitat de Barcelona > Física Quàntica i Astrofísica > Articles publicats en revistes (Física Quàntica i Astrofísica) > Visualizar documento

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dc.contributor	Universitat de Barcelona
dc.contributor.author	Beane, Silas R.
dc.contributor.author	Bedaque, Paulo F.
dc.contributor.author	Luu, Thomas C.
dc.contributor.author	Orginos, Kostas
dc.contributor.author	Pallante, Elisabetta
dc.contributor.author	Parreño García, Assumpta
dc.contributor.author	Savage, Martin J.
dc.date	2010-05-06T12:11:03Z
dc.date	2010-05-06T12:11:03Z
dc.date	2006
dc.identifier.citation	0556-2821
dc.identifier.citation	542924
dc.identifier.uri	http://hdl.handle.net/2445/12483
dc.format	9 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	The American Physical Society
dc.relation	Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.74.114503
dc.relation	Physical Review 2006, vol. 74, núm. 11, p. 114503-1-114503-9
dc.relation	http://dx.doi.org/10.1103/PhysRevD.74.114503
dc.rights	(c) The American Physical Society, 2006
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Partícules (Física nuclear)
dc.subject	Cromodinàmica quàntica
dc.subject	Particles (Nuclear physics)
dc.subject	Quantum chromodynamics
dc.title	(pi)K scattering in full QCD with domain-wall valence quarks.
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.abstract	We calculate the pi+ K+ scattering length in fully-dynamical lattice QCD with domain-wall valence quarks on MILC lattices with rooted staggered sea-quarks at a lattice spacing of b=0.125 fm, lattice spatial size of L =2.5 fm and at pion masses of m_pi=290, 350, 490 and 600 MeV. The lattice data, analyzed at next-to-leading order in chiral perturbation theory, allows an extraction of the full pi K scattering amplitude at threshold. Extrapolating to the physical point gives m_pi a_3/2 = -0.0574 (+- 0.0016)(+0.0024 -0.0058) and m_pi a_1/2 = 0.1725 (+- 0.0017)(+0.0023 -0.0156) for the I=3/2 and I=1/2 scattering lengths, respectively, where the first error is statistical and the second error is an estimate of the systematic due to truncation of the chiral expansion.

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