Ab initio three-loop calculation of the W-exchange contribution to nonleptonic decays of double charm baryons; Physical Review D; Vol. 99, iss. 5
| Parent link: | Physical Review D: covering particles, fields, gravitation, and cosmology Vol. 99, iss. 5.— 2019.— [056013, 7 p.] |
|---|---|
| Collectivité auteur: | |
| Autres auteurs: | , , , , |
| Résumé: | Title screen We have made an ab initio three-loop quark model calculation of the W-exchange contribution to the nonleptonic two-body decays of the doubly charmed baryons Ξ++cc and Ω+cc. The W-exchange contributions appear in addition to the factorizable tree graph contributions and are not suppressed in general. We make use of the covariant confined quark model previously developed by us to calculate the tree graph as well as the W-exchange contribution. We calculate helicity amplitudes and quantitatively compare the tree graph and W-exchange contributions. Finally, we compare the calculated decay widths with those from other theoretical approaches when they are available. Режим доступа: по договору с организацией-держателем ресурса |
| Langue: | anglais |
| Publié: |
2019
|
| Sujets: | |
| Accès en ligne: | https://doi.org/10.1103/PhysRevD.99.056013 |
| Format: | Électronique Chapitre de livre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660736 |