Pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model

We study the pion distribution amplitude (πDA) in the context of a nonlocal chiral quark model. The corresponding Lagrangian reproduces the phenomenological values of the pion mass and decay constant, as well as the momentum dependence of the quark propagator obtained in lattice calculations. It is...

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Detalles Bibliográficos
Autores principales: Gómez Dumm, Daniel Alberto, Noguera, S., Scoccola, Norberto Nerio, Scopetta, S.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2014
Materias:
Física
Relativistic quark models
Quantum chromodynamics
Distribution amplitudes
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/104695
http://hdl.handle.net/11336/95919
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-104695
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 models
Quantum chromodynamics
Distribution amplitudes
spellingShingle Física
Relativistic quark models
Quantum chromodynamics
Distribution amplitudes
Gómez Dumm, Daniel Alberto
Noguera, S.
Scoccola, Norberto Nerio
Scopetta, S.
Pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
topic_facet Física
Relativistic quark models
Quantum chromodynamics
Distribution amplitudes
description We study the pion distribution amplitude (πDA) in the context of a nonlocal chiral quark model. The corresponding Lagrangian reproduces the phenomenological values of the pion mass and decay constant, as well as the momentum dependence of the quark propagator obtained in lattice calculations. It is found that the obtained πDA has two symmetric maxima, which arise from the new contributions generated by the nonlocal character of the interactions. This πDA is applied to leading order and next-to-leading order calculations of the pion-photon transition form factor. Implications of the results are discussed.
format Articulo
Preprint
author Gómez Dumm, Daniel Alberto
Noguera, S.
Scoccola, Norberto Nerio
Scopetta, S.
author_facet Gómez Dumm, Daniel Alberto
Noguera, S.
Scoccola, Norberto Nerio
Scopetta, S.
author_sort Gómez Dumm, Daniel Alberto
title Pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
title_short Pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
title_full Pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
title_fullStr Pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
title_full_unstemmed Pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
title_sort pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/104695
http://hdl.handle.net/11336/95919
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