Isospin breaking in $Kπ$ vector form-factors for the weak and rare decays $K_{\ell3}$, $K\toπν\barν$ and $K\toπ\ell^+\ell^-$

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dc.creatorBijnens, Johan
dc.creatorGhorbani, Karim
dc.date2007-11-01
dc.date.accessioned2026-07-07T08:39:54Z
dc.date.available2026-07-07T08:39:54Z
dc.descriptionWe calculate the two form-factors for the four Kaon to pion transitions via a vector current to order $p^6$ in Chiral Perturbation Theory to first order in isospin breaking via the quark masses. In addition we derive relations between these form-factors valid to first order in the up-down quark-mass difference but to all orders in Chiral Perturbation Theory. We present numerical results for all eight form-factors at $t=0$ and for varying $t$ and for the scalar form-factors at the Callan-Treiman point.
dc.description31 pages
dc.identifierhttps://arxiv.org/abs/0711.0148
dc.identifierhttp://arxiv.org/abs/0711.0148
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141236
dc.subjectHigh Energy Physics - Phenomenology
dc.titleIsospin breaking in $Kπ$ vector form-factors for the weak and rare decays $K_{\ell3}$, $K\toπν\barν$ and $K\toπ\ell^+\ell^-$
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