Speaker
Kai Yi
(Physics and Astronomy Department-University of Iowa)
Description
CDF reports the recent evidence for a new narrow resonance, Y(4140), decaying to J/psi phi final state, and reconstructed using 2.7 fb-1 of exclusive B+->J/psiphiK decays. Using the world's largest sample of X(3872)->J/psipipi decays, a study on the X(3872) mass and width aimed at testing the internal composition of this state is also described. This lead to the most precise X(3872) mass measurement to date and disfavors the hypothesis of the X(3872) being composed of two resonances closely spaced in mass.
Author
Kai Yi
(Physics and Astronomy Department-University of Iowa)
