Heavy quark meson spectroscopy at CDF (X(3872) mass and evidence for Y(4140))

Details Heavy quark meson spectroscopy at CDF (X(3872) mass and evidence for Y(4140)) Heavy quark meson spectroscopy at CDF (X(3872) mass and evidence for Y(4140))

2010-11-02

arxiv.org/abs/1011.0616v1

PoS EPS-HEP2009:085,2009

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 8 figures

Scientific paper

With growing datasets collected by the CDF II experiment, studies of the spectroscopy of mesons containing heavy quarks become more exciting. The CDF experiment has good capabilities in both charm and bottom sector. This capability allowed also to contribute to the study of the zoo of states called X,Y,Z. In this area we present a recent update of the mass measurement of X(3872). The result m(X(3872)) = 3871.61 +- 0.16 +- 0.19 MeV is currently the most precise measurement in the world. In addition, we report evidence for a new narrow resonance, Y(4140), the first to be seen in the J/psi phi decay mode, using 2.7 invfb of exclusive B+ to J/psi phi K+ decays.

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