Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-03-31
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 4 figures, Figure 2 updated and some typos corrected. To be published in Physical Review Letters
Scientific paper
Heavy hadrons containing heavy quarks (for example, Upsilon-mesons) feature a scale separation between the heavy quark mass (about 4.5 GeV for the b-quark) and the QCD scale (about 0.3 GeV}) that controls effective masses of lighter constituents. Therefore, as in ordinary molecules, the de-excitation of the lighter, faster degrees of freedom leaves the velocity distribution of the heavy quarks unchanged, populating the available decay channels in qualitatively predictable ways. Automatically an application of the Franck-Condon principle of molecular physics explains several puzzling results of Upsilon(5S) decays as measured by the Belle collaboration, such as the high rate of Bs*-anti Bs* versus Bs*-anti Bs production, the strength of three-body B-anti B + pion decays, or the dip in B momentum shown in these decays. We argue that the data is showing the first Sturm-Liouville zero of the Upsilon(5S) quantum mechanical squared wavefunction, and providing evidence for a largely b-anti b composition of this meson.
Llanes-Estrada Felipe J.
Torres-Rincon Juan M.
No associations
LandOfFree
Heavy Quark Fluorescence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Heavy Quark Fluorescence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heavy Quark Fluorescence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-579768