Pion radiative weak decays in nonlocal chiral quark models
We analyze the radiative pion decay π⁺ → e⁺ νeγ within nonlocal chiral quark models that include wave function renormalization. In this framework we calculate the vector and axial-vector form factors F V and F A at q² = 0 — where q² is the e⁺ ν e squared invariant mass — and the slope a of F V (q²)...
Guardado en:
| Autores principales: | , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2011
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/129305 |
| Aporte de: |
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I19-R120-10915-129305 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Nonlocal quark models Pion radiative weak decays |
| spellingShingle |
Física Nonlocal quark models Pion radiative weak decays Gómez Dumm, Daniel Alberto Noguera, S. Scoccola, Norberto Nerio Pion radiative weak decays in nonlocal chiral quark models |
| topic_facet |
Física Nonlocal quark models Pion radiative weak decays |
| description |
We analyze the radiative pion decay π⁺ → e⁺ νeγ within nonlocal chiral quark models that include wave function renormalization. In this framework we calculate the vector and axial-vector form factors F V and F A at q² = 0 — where q² is the e⁺ ν e squared invariant mass — and the slope a of F V (q²) at q² → 0 . The calculations are carried out considering different nonlocal form factors, in particular those taken from lattice QCD evaluations, showing a reasonable agreement with the corresponding experimental data. The comparison of our results with those obtained in the (local) NJL model and the relation of F V and a with the form factor in π⁰ → γ ⁎ γ decays are discussed. |
| format |
Articulo Articulo |
| 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 |
Pion radiative weak decays in nonlocal chiral quark models |
| title_short |
Pion radiative weak decays in nonlocal chiral quark models |
| title_full |
Pion radiative weak decays in nonlocal chiral quark models |
| title_fullStr |
Pion radiative weak decays in nonlocal chiral quark models |
| title_full_unstemmed |
Pion radiative weak decays in nonlocal chiral quark models |
| title_sort |
pion radiative weak decays in nonlocal chiral quark models |
| publishDate |
2011 |
| url |
http://sedici.unlp.edu.ar/handle/10915/129305 |
| work_keys_str_mv |
AT gomezdummdanielalberto pionradiativeweakdecaysinnonlocalchiralquarkmodels AT nogueras pionradiativeweakdecaysinnonlocalchiralquarkmodels AT scoccolanorbertonerio pionradiativeweakdecaysinnonlocalchiralquarkmodels |
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Repositorios |
| _version_ |
1764820452315758592 |