Collaboration, UKQCD, McNeile, C and Michael, C
(2002)
Hadronic decay of a vector meson from the lattice.
Phys.Lett.B, 556 (3-4).
pp. 177-184.
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Abstract
We explore the decay of a vector meson to two pseudoscalar mesons on the lattice with $N_f=2$ flavours of sea quark. Although we are working with quark masses that do not allow a physical decay, we show how the transition rate can be evaluated from the amplitude for $\rho \to \pi \pi$ and from the annihilation component of $\pi \pi \to \pi \pi$. We explore the decay amplitude for two different pion momenta and find consistent results. The coupling strength we find is in agreement with experiment. We also find evidence for a shift in the $\rho$ mass caused by mixing with two pion states.
| Item Type: | Article |
|---|---|
| Additional Information: | 13 pages, version as accepted for Physics Letters B |
| Uncontrolled Keywords: | hep-lat, hep-lat |
| Subjects: | ?? QC ?? |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 19 Aug 2008 13:22 |
| Last Modified: | 17 Dec 2022 01:14 |
| DOI: | 10.1016/s0370-2693(03)00130-8 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/529 |
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