 |
 |
 |
|
|
|
| HAL : hal-00002810, version 1 |
| arXiv : hep-ph/0001188 |
| Fiche détaillée |  Récupérer au format |
|
|
| Physical Review D 62 (2000) 033003 |
|
|
|
|
| Contributions of order O(M(QUARK)**2) K(LEPTON 3) form-factors and unitarity of the CKM matrix |
|
|
| Norman. H. Fuchs1Marc Knecht2Jan Stern3 |
|
|
| (18/01/2000) |
|
|
|
| The form factors for the K_{l 3} semileptonic decay are computed to order O(p^4) in generalized chiral perturbation theory. The main difference with the standard O(p^4) expressions consists in contributions quadratic in quark masses, which are described by a single divergence-free low-energy constant, A_3. A new simultaneous analysis is presented for the CKM matrix element V_{us}, the ratio F_K/F_{pi}, K_{l 3} decay rates and the scalar form factor slope lambda_0. This framework easily accommodates the precise value for $V_{ud}$ deduced from superallowed nuclear beta-decays. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | Physics Departement |
|
|
| 2 : | CPT - Centre de Physique Théorique |
|
|
| 3 : | IPNO - Institut de Physique Nucléaire d'Orsay |
|
|
|
|
|
|
|
|
|
| Domaine | : | Physique/Physique des Hautes Energies - Phénoménologie |
|
|
| Lien vers le texte intégral : |
|
| http://fr.arXiv.org/abs/hep-ph/0001188 |
| hal-00002810, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00002810 | |
| oai:hal.archives-ouvertes.fr:hal-00002810 | |
| Contributeur : Marc Knecht | |
| Soumis le : Mercredi 15 Septembre 2004, 14:34:57 | |
| Dernière modification le : Mercredi 15 Septembre 2004, 14:34:57 | |
