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

Autor:	Gómez Dumm, Daniel Alberto, Roig, P.
Jazyk:	angličtina
Rok vydání:	2012
Předmět:	Astronomía purl.org/becyt/ford/1 [https] Chiral symmetry Decays of the tau lepton Ciencias Físicas TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY Física purl.org/becyt/ford/1.3 [https] CIENCIAS NATURALES Y EXACTAS Quantum chromodynamics
Zdroj:	CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP
Popis:	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 asymptotic behavior of vector spectral functions ruled by QCD, unknown effective couplings are determined by fitting the τ-→η(′)π-π0ντ branching ratio and decay spectrum to recent data. Predictions for the partner decay τ-→η(′)π-π0ντ and the low-energy behavior of the cross section σ(e+e -→ηπ +π -) are also discussed. Instituto de Física La Plata Consejo Nacional de Investigaciones Científicas y Técnicas
Databáze:	OpenAIRE
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