Integrating out strange quarks in ChPT

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dc.creatorGasser, Jurg
dc.creatorHaefeli, Christoph
dc.creatorIvanov, Mikhail A.
dc.creatorSchmid, Martin
dc.date2007-06-07
dc.date2007-06-26
dc.date.accessioned2026-07-07T11:16:41Z
dc.date.available2026-07-07T11:16:41Z
dc.descriptionWe study three flavour chiral perturbation theory in a limit where the strange quark mass is much larger than the external momenta and the up and down quark masses, and where the external fields are those of two-flavour chiral perturbation theory. In this case, the theory reduces to the one of SU(2)_L x SU(2)_R. Through this reduction, one can work out the strange quark mass dependence of the LECs in the two-flavour case. We present the pertinent relations at two-loop order for F,B and l_i.
dc.description14 pages, 3 figures, References added. Due to a typo in a form program, we missed a finite, scale independent part in l_7. Is now included. Version to appear in Phys.Lett.B
dc.identifierhttps://arxiv.org/abs/0706.0955
dc.identifierhttp://arxiv.org/abs/0706.0955
dc.identifierPhys.Lett.B652:21-26,2007
dc.identifierdoi:10.1016/j.physletb.2007.06.058
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192752
dc.subjectHigh Energy Physics - Phenomenology
dc.titleIntegrating out strange quarks in ChPT
dc.typetext

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