Hadronic gauge coupling forρ′→ρππ

Autor: Fernando Cornet, Carles Ayala, Albert Bramon
Rok vydání: 1984
Předmět:
Zdroj: Zeitschrift für Physik C Particles and Fields. 26:57-60
ISSN: 1434-6052
0170-9739
DOI: 10.1007/bf01572541
Popis: A reasonable understanding of the smallness of the ρ′→ππ to the ρ′→ρππ branching ratio in the context of the quark-pair creation model (QPCM) is achieved. Our crucial hypothesis consists in assuming that the ρ can be phenomenologically considered as a gauge particle which couples to the derivative ρ′ππ coupling through a gauge principle. This fixes unambiguously the ρ′→ρππ amplitude.
Databáze: OpenAIRE