781 articles – 3114 references  [version française]
HAL: in2p3-00732411, version 1

Detailed view  Export this paper
Physical Review D 86 (2012) 092010
Study of high-multiplicity three-prong and five-prong tau decays at BABAR
J. P. Lees1, V. Poireau1, V. Tisserand1, N. Arnaud2, M. Davier2, D. Derkach2, G. Grosdidier2, F. Le Diberder2, A. M. Lutz2, B. Malaescu2, P. Roudeau2, M. H. Schune2, A. Stocchi2, G. Wormser2, D. Bernard3, M. Verderi3, S. Emery4, G. Hamel de Monchenault4, G. Vasseur4, Ch. Yèche4, S. Akar5, E. Ben-Haim5, M. Bomben5, G.R. Bonneaud5, H. Briand5, G. Calderini5, J. Chauvau5, O. Hamon5, Ph. Leruste5, G. Marchiori5, J. Ocariz5, S. Sitt5
For the BABAR collaboration(s)

We present measurements of the branching fractions of 3-prong and 5-prong tau decay modes using a sample of 430 million tau lepton pairs, corresponding to an integrated luminosity of 468 fb-1, collected with the BaBar detector at the PEP-II asymmetric energy e+e- storage rings. The \tau- --> (3\pi)- \eta \nu, \tau- --> (3\pi)- \omega \nu, and \tau- --> \pi- f_1(1285)\nu, branching fractions are presented as well as a new limit on the branching fraction of the isospin-forbidden, second-class current, \tau- --> \pi-\eta'(958)\nu, decay. We find no evidence for charged kaons in these decay modes and place the first upper limits on their branching fractions.
1:  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
2:  LAL - Laboratoire de l'Accélérateur Linéaire
3:  LLR - Laboratoire Leprince-Ringuet
4:  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
5:  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
Physics/High Energy Physics - Experiment
Fulltext link: