On the eta(b) => J/psi J/psi decay

Abstract

It has been argued long ago that eta(b) could be observed through the eta(b) => J/psi(=> mu+ mu-) J/psi(=> mu+ mu-) decay chain. Recent calculations indicate that the width of eta(b) into two J/psi is almost three order of magnitude smaller than the one into the D D*. We study the effects of final state interactions due to the D D* intermediate state on the J/psi J/psi final state. We find that the inclusion of this contribution may enhance the short distance branching ratio of about two orders of magnitude.

LaTeX, 5 pages, 2 figures. Contributed to QCD @ Work 2007: International Workshop on Quantum Chromodynamics Theory and Experiment, Martina Franca, Valle d'Itria, Italy, 16-20 Jun 2007

References in corpus (9)

• Final State Interactions in Hadronic B Decays
• Exclusive semileptonic and nonleptonic decays of the Bc meson
• Decay channels and charmonium mass-shifts
• Semileptonic decays of Bc mesons into charmonium states in a relativistic quark model
• Photon transitions in Upsilon(2S) and Upsilon(3S)
• ρD^*D^* vertex from QCD sum rules
• Which hadronic decay modes are good for ${\eta }_b$ searching: double $J/\psi$ or something else?
• The dispersive contribution of $\rho (1450,1700)$ decays and X(1576)
• Search for eta_b in two-photon collisions at LEP II with the DELPHI detector

Cited by in corpus (1)

• Relativistic corrections to ${\rm Y}$ exclusive decay into double $S-$wave charmonia