Low energy constants from K(l4) form-factors

G. Amorós; J. Bijnens; P. Talavera

doi:10.1016/S0370-2693(00)00384-1

Low energy constants from K(l4) form-factors

G. Amorós, J. Bijnens, P. Talavera

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Abstract

We have calculated the form-factors F and G in K → ππlν decays (K(l4)) to two-loop order in Chiral Perturbation Theory (ChPT). Combining this together with earlier two-loop calculations an updated set of values for the L(i)/(r), the ChPT constants at O(p⁴), is obtained. We discuss the uncertainties in the determination and the changes compared to previous estimates. (C) 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	71-76
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	480
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(00)00384-1
Publication status	Published - 2000 May 4

Subject classification (UKÄ)

Subatomic Physics

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10.1016/S0370-2693(00)00384-1

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abstract = "We have calculated the form-factors F and G in K → ππlν decays (K(l4)) to two-loop order in Chiral Perturbation Theory (ChPT). Combining this together with earlier two-loop calculations an updated set of values for the L(i)/(r), the ChPT constants at O(p4), is obtained. We discuss the uncertainties in the determination and the changes compared to previous estimates. (C) 2000 Elsevier Science B.V.",

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AU - Amorós, G.

AU - Bijnens, J.

AU - Talavera, P.

PY - 2000/5/4

Y1 - 2000/5/4

N2 - We have calculated the form-factors F and G in K → ππlν decays (K(l4)) to two-loop order in Chiral Perturbation Theory (ChPT). Combining this together with earlier two-loop calculations an updated set of values for the L(i)/(r), the ChPT constants at O(p4), is obtained. We discuss the uncertainties in the determination and the changes compared to previous estimates. (C) 2000 Elsevier Science B.V.

AB - We have calculated the form-factors F and G in K → ππlν decays (K(l4)) to two-loop order in Chiral Perturbation Theory (ChPT). Combining this together with earlier two-loop calculations an updated set of values for the L(i)/(r), the ChPT constants at O(p4), is obtained. We discuss the uncertainties in the determination and the changes compared to previous estimates. (C) 2000 Elsevier Science B.V.

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U2 - 10.1016/S0370-2693(00)00384-1

DO - 10.1016/S0370-2693(00)00384-1

M3 - Article

AN - SCOPUS:0034603945

SN - 0370-2693

VL - 480

SP - 71

EP - 76

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Low energy constants from K(l4) form-factors

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