Apr 19 – 21, 2017
Trieste - Italia
Europe/Rome timezone
Proceedings: Il Nuovo Cimento C, Vol. 41, N. 1-2, 2018 : https://www.sif.it/riviste/sif/ncc/econtents/2018/041/01-02

Search for B-meson decays to four baryons at Babar

Apr 21, 2017, 5:00 PM
1h
Aula Magna - Edificio H3 (Trieste - Italia)

Aula Magna - Edificio H3

Trieste - Italia

Università degli Studi di Trieste Via Valerio nº 12/2 I-34127 Trieste (TS)
Poster contribution Sessione Frontiera Intensità Archivio Poster

Speaker

Laura Zani (PI)

Description

B mesons are the lightest mesons which can decay to various final states containing different baryons. Up to now, the discrepancy between the inclusive branching fraction of all B meson decay modes with at least a couple of baryons in the final state, measured by ARGUS to be (6.8 +- 0.6)% , and the sum of exclusive baryonic channels, averaged on neutral and positive B mesons at less than 1%, represents an open issue. Moreover, the measurement and comparison of exclusive branching fractions of baryonic B decays as well as studies on the dynamic of the decay, may allow better understanding of baryon production in B decays and, more generally, hadron fragmentation into baryons. We present here a search for the decay of a B meson in four baryons: B -> p anti-p p anti-p, not yet observed. The data set consists of about 470 million B-antiB pairs collected with the BABAR detector at the SLAC National Accelerator Laboratory.

Primary author

Co-authors

Fabio Anulli (ROMA1) Francesco Forti (PI) Mr Thomas Lueck (INFN sezione Pisa, University of Pisa)

Presentation materials