Výsledky vyhledávání - "Gómez Dumm, Daniel Alberto"

Cold magnetized quark matter at finite density in a nonlocal chiral quark model

Autor: Ferraris, S. A., Gómez Dumm, Daniel Alberto, Grunfeld, Ana Gabriela, Scoccola, Norberto Nerio

We study the behavior of two-flavor dense quark matter under the influence of an external magnetic field in the framework of a nonlocal chiral quark model with separable interactions. The nonlocality is incorporated in the model by using a Gaussian f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::429398312cc9bdffc244ee06307e2e09
http://sedici.unlp.edu.ar/handle/10915/139724

Zobrazit plný text záznamu

η-γ and η′-γ Transition form factors in a nonlocal NJL model

Autor: Gómez Dumm, Daniel Alberto, Noguera, S., Scoccola, Norberto Nerio

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

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,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::8e3bb978217cd5a2f1ae5337f7344ce0
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.054006

Zobrazit plný text záznamu

Dispersive representation of the pion vector form factor in τ→π π ντ decays

Autor: Gómez Dumm, Daniel Alberto, Roig, P.

We propose a dispersive representation of the charged pion vector form factor that is consistent with chiral symmetry and fulfills the constraints imposed by analyticity and unitarity. Unknown parameters are fitted to the very precise data on τ- π-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1329::e412f56f358792df42f12fce6bd67f91
http://hdl.handle.net/11336/3412

Zobrazit plný text záznamu

Resonance Chiral Lagrangian analysis of τ-→η(′)π-π0ντ

Autor: Gómez Dumm, Daniel Alberto, Roig, P.

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP

The hadronization structure of τ-→η(′)π-π0ντ decays is analyzed using chiral perturbation theory with resonances, considering only the contribution of the lightest meson resonances at leading order in the 1/N C expansion. After imposing the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3be12d70a101bf09b05ebba48b9d965e
http://sedici.unlp.edu.ar/handle/10915/96144

Zobrazit plný text záznamu

τ → π π π ντ decays and the a1(1260) off-shell width revisited

Autor: Gómez Dumm, Daniel Alberto, Roig, Pablo, Pich, Antonio, Portolés, Jorge

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP

The τ → π π π ν τ decay is driven by the hadronization of the axial-vector current. Within the resonance chiral theory, and considering the large- N C expansion, this process has been studied in Ref. [1] (D. Gomez Dumm, A. Pich, J. Portoles,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::b32fce7fa9a0375b788029380777e8d0
http://sedici.unlp.edu.ar/handle/10915/130638

Zobrazit plný text záznamu

Constraints on economical 331 models from mixing of K, Bd, and Bs neutral mesons

Autor: Cabarcas Bolaños, José Miguel, Gómez Dumm, Daniel Alberto, Martinez, R.

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP

We analyze the effect of flavor changing neutral currents within 331 models. In particular, we concentrate on the so-called economical models, which have a minimal scalar sector. Taking into account the experimental measurements of observables relate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::9e0c3037a2e7cca0504f8c69092435a9
http://sedici.unlp.edu.ar/handle/10915/126275

Zobrazit plný text záznamu

Equation of state for hybrid compact stars with a nonlocal chiral quark model

Autor: Grunfeld, Ana Gabriela, Berdermann, Jens, Blaschke, David, Klähn, Thomas, Gómez Dumm, Daniel Alberto, Scoccola, Norberto Nerio

We study the thermodynamics of two flavor color superconducting (2SC) quark matter within a nonlocal chiral quark model, using both instantaneous and covariant nonlocal interactions. For applications to compact stars, we impose conditions of electric

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1329::de9452be4f2e157daed8915f64d26f2a
http://sedici.unlp.edu.ar/handle/10915/132515

Zobrazit plný text záznamu

τ→ τ π π π ν τ decays in the resonance effective theory

Autor: Gómez Dumm, Daniel Alberto, Pich, A., Portolés, J.

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP

τ→ π π π ντ decays are analyzed within the framework of the resonance effective theory of QCD. We work out the relevant Lagrangian that describes the axial-vector current hadronization contributing to these processes, in particular the local

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::f6b5a7c0e9b9de45677389bd1644ba50
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.69.073002

Zobrazit plný text záznamu

Annihilation amplitudes and factorization in B± → ΦK*±

Autor: Epele, Luis Nicolás, Gómez Dumm, Daniel Alberto, Szynkman, Alejandro Andrés

We study the decay B± → ΦK*± followed by the decay of the outgoing vector mesons into two pseudoscalars. The analysis of the angular distributions of the decay products is shown to provide useful information about the annihilation contributions

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1329::014c5f62df4e231a719865b64a290c84
http://sedici.unlp.edu.ar/handle/10915/132368

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání