η-γ and η′-γ transition form factors in a nonlocal NJL model
We study the η and η′ distribution amplitudes (DAs) in the context of a nonlocal SU(3)L - SU(3)R chiral quark model. The corresponding Lagrangian allows us to reproduce the phenomenological values of pseudoscalar meson masses and decay constants, as well as the momentum dependence of the quark propa...
| Autores principales: | , , |
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| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/97999 https://ri.conicet.gov.ar/11336/63624 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.054006 https://arxiv.org/abs/1611.08457 |
| Aporte de: |
| id |
I19-R120-10915-97999 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Relativistic quark model Quantum chromodynamics Chiral symmetry |
| spellingShingle |
Física Relativistic quark model Quantum chromodynamics Chiral symmetry Gómez Dumm, Daniel Alberto Noguera, S. Scoccola, Norberto Nerio η-γ and η′-γ transition form factors in a nonlocal NJL model |
| topic_facet |
Física Relativistic quark model Quantum chromodynamics Chiral symmetry |
| description |
We study the η and η′ distribution amplitudes (DAs) in the context of a nonlocal SU(3)L - SU(3)R chiral quark model. The corresponding Lagrangian allows us to reproduce the phenomenological values of pseudoscalar meson masses and decay constants, as well as the momentum dependence of the quark propagator arising from lattice calculations. It is found that the obtained DAs have two symmetric maxima, which arise from new contributions generated by the nonlocal character of the interactions. These DAs are then applied to the calculation of the η-γ and η′-γ transition form factors. Implications of our results regarding higher twist corrections and/or contributions to the transition form factors originated by gluon-gluon components in the η and η′ mesons are discussed. |
| format |
Articulo Preprint |
| author |
Gómez Dumm, Daniel Alberto Noguera, S. Scoccola, Norberto Nerio |
| author_facet |
Gómez Dumm, Daniel Alberto Noguera, S. Scoccola, Norberto Nerio |
| author_sort |
Gómez Dumm, Daniel Alberto |
| title |
η-γ and η′-γ transition form factors in a nonlocal NJL model |
| title_short |
η-γ and η′-γ transition form factors in a nonlocal NJL model |
| title_full |
η-γ and η′-γ transition form factors in a nonlocal NJL model |
| title_fullStr |
η-γ and η′-γ transition form factors in a nonlocal NJL model |
| title_full_unstemmed |
η-γ and η′-γ transition form factors in a nonlocal NJL model |
| title_sort |
η-γ and η′-γ transition form factors in a nonlocal njl model |
| publishDate |
2017 |
| url |
http://sedici.unlp.edu.ar/handle/10915/97999 https://ri.conicet.gov.ar/11336/63624 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.054006 https://arxiv.org/abs/1611.08457 |
| work_keys_str_mv |
AT gomezdummdanielalberto ēgandēgtransitionformfactorsinanonlocalnjlmodel AT nogueras ēgandēgtransitionformfactorsinanonlocalnjlmodel AT scoccolanorbertonerio ēgandēgtransitionformfactorsinanonlocalnjlmodel |
| bdutipo_str |
Repositorios |
| _version_ |
1764820492549619715 |