NAGIOS: RODERIC FUNCIONANDO
tau -> pi pi pi nu(tau) decays and the a(1)(1260) off-shell width revisited
DSpace Repository
- DSpace Home
- Investigació
- e-prints
- 22 - Física
- View Item
tau -> pi pi pi nu(tau) decays and the a(1)(1260) off-shell width revisited
|
View
|
| Gómez Dumm, Daniel; Roig Garcés, Pablo; Pich Zardoya, Antonio Perfil; Portolés Ibáñez, Jorge | |||
| This document is a artículoDate2010 | |||
|
Este documento está disponible también en : http://hdl.handle.net/10550/42509 |
|||
|
|||
| The tau -> pi pi pi nu_tau decay is driven by the hadronization of the axial-vector current. Within the resonance chiral theory, and considering the large-Nc expansion, this process has been studied in Ref.[1]. In the light of later developments we revise here this previous work by including a new off-shell width for the lightest a_1 resonance that provides a good description of the tau -> pi pi pi nu_tau spectrum and branching ratio. We also consider the role of the rho(1450) resonance in these observables. Thus we bring in an overall description of the tau -> pi pi pi nu_tau process in excellent agreement with our present experimental knowledge. | |||
|
Gómez Dumm, Daniel Roig Garcés, Pablo Pich Zardoya, Antonio Portolés Ibáñez, Jorge 2010 tau -> pi pi pi nu(tau) decays and the a(1)(1260) off-shell width revisited Physics Letters B 685 2-3 158 164 |
|||
| http://dx.doi.org/10.1016/j.physletb.2010.01.059 |
This item appears in the following Collection(s)
-
22 - Física [3699]