Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 38: Hadronenstruktur und -spektroskopie

HK 38.2: Vortrag

Donnerstag, 20. März 2014, 14:30–14:45, HZ 3

Search for hybrids at BABAR: study of the rare decays B to J/psi K K K, and search for B0 to J/psi phi. — •Elisabetta Prencipe — FZJ Juelich, Leo Brandt Strasse - 52428 Juelich

We study the rare B meson decays B to J/psi K K K, B to J/psi phi K, and search for B0 to J/psi phi, using 468 millions of BBbar events collected at the Y(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric-energy storage ring. We perform a study of the decays B to J/psi K K K and B to J/psi phi K, obtaining new BR measurements. We also search for B0 to J/psi phi and derive an UL on the BR for this decay mode, according to predictions. We search for resonance production in the J/psi phi mass spectrum and obtain limits on the BR of the resonances claimed by the CDF Collaboration. We find that the distribution of events on the Dalitz plot is inconsistent with being uniform, although, in order to assess the presence of a resonant behavior, higher statistics and a full Dalitz plot analysis are needed.