| Article | |
| Report number | arXiv:1208.4513 ; UAB-FT-718 ; UAB-FT-718 |
| Title | Theoretical inputs and errors in the new hadronic currents in TAUOLA |
| Author(s) | Roig, P. (Barcelona, IFAE) ; Nugent, I.M. (RWTH Aachen U.) ; Przedzinski, T. (Jagiellonian U. ; Cracow, INP) ; Shekhovtsova, O. (Valencia U., IFIC) ; Was, Z. (CERN ; Cracow, INP) |
| Publication | 2012-10-24 |
| Imprint | 23 Aug 2012 |
| Number of pages | 5 |
| Note | Comments: 5 pages, no figures, contribution to the Proceedings of the QCD@Work12 Conference 5 pages, no figures, contribution to the Proceedings of the QCD@Work12 Conference |
| In: | AIP Conf. Proc. 1492 (2012) pp.57-61 |
| In: | QCD@Work - International Workshop on QCD - Theory and Experiment, Lecce, Italy, 18 - 21 Jun 2012, pp.57-61 |
| DOI | 10.1063/1.4763492 |
| Subject category | Particle Physics - Phenomenology |
| Abstract | The new hadronic currents implemented in the TAUOLA library are obtained in the unified and consistent framework of Resonance Chiral Theory: a Lagrangian approach in which the resonances exchanged in the hadronic tau decays are active degrees of freedom included in a way that reproduces the low-energy results of Chiral Perturbation Theory. The short-distance QCD constraints on the imaginary part of the spin-one correlators yield relations among the couplings that render the theory predictive. In this communication, the obtaining of the two- and three-meson form factors is sketched. One of the criticisms to our framework is that the error may be as large as 1/3, since it is a realization of the large-N_C limit of QCD in a meson theory. A number of arguments are given which disfavor that claim pointing to smaller errors, which would explain the phenomenological success of our description in these decays. Finally, other minor sources of error and current improvements of the code are discussed. |
| Copyright/License | arXiv nonexclusive-distrib. 1.0 |
Corresponding record in: Inspire
Record created 2012-08-23, last modified 2021-09-17
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