Closed-flavor pi + J/psi and pi + Upsilon Cross Sections at Low Energies from Dipion Decays

Details Closed-flavor pi + J/psi and pi + Upsilon Cross Sections at Low Energies from Dipion Decays Closed-flavor pi + J/psi and pi + Upsilon Cross Sections at Low Energies from Dipion Decays

2003-06-05

arxiv.org/abs/nucl-th/0306026v1

J.Phys. G30 (2004) 1811-1820

Physics

Nuclear Physics

Nuclear Theory

6 pages, 6 figures

Scientific paper

10.1088/0954-3899/30/12/004

The scale of low energy c-cbar and b-bbar cross sections on light hadrons is of great importance to searches for the quark gluon plasma using the heavy-quarkonium suppression signature. Unfortunately, little is known about these near-threshold cross sections at present, and recent theoretical estimates span many orders of magnitude. Here we use experimental data on the four observed closed-flavor heavy quarkonium hadronic decays psi' -> pi pi J/psi, Upsilon' -> pi pi Upsilon, Upsilon'' -> pi pi Upsilon and Upsilon'' -> pi pi Upsilon', combined with simple models of the transition amplitudes, to estimate the pion scattering cross sections of c-cbar and b-bbar mesons near threshold. Specifically we consider the closed-flavor reactions pi J/psi -> pi psi', pi Upsilon -> pi Upsilon', pi Upsilon -> pi Upsilon'' and pi Upsilon' -> pi Upsilon'' and their time-reversed analogues. Our results may be useful in constraining theoretical models of the strong interactions of heavy quarkonia, and can be systematically improved through future detailed studies of dipion decays, notably psi' -> pi pi J/psi and Upsilon'' -> pi pi Upsilon.

Affiliated with

Also associated with

No associations

Rating

Closed-flavor pi + J/psi and pi + Upsilon Cross Sections at Low Energies from Dipion Decays 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 Closed-flavor pi + J/psi and pi + Upsilon Cross Sections at Low Energies from Dipion Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Closed-flavor pi + J/psi and pi + Upsilon Cross Sections at Low Energies from Dipion Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-24282