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SUMMARY:Resonances in coupled-channel scattering from QCD - David Wilson (
 DAMTP)
DTSTART:20160115T160000Z
DTEND:20160115T170000Z
UID:TALK62929@talks.cam.ac.uk
CONTACT:Marco Nardecchia
DESCRIPTION:The excited states in hadron physics are seen as resonances in
  the scattering of light stable states in QCD\, like pions and kaons. Many
  excited states also decay into multiple final states\, necessitating coup
 led-channel analyses. Recently it has become possible to obtain coupled-ch
 annel scattering amplitudes using lattice QCD. Using a large basis of oper
 ators we are able to obtain a reliable finite volume spectrum describing\,
  for example\, the pi-K\, eta-K coupled system. Utilising the finite volum
 e formalism proposed by Luescher and extended by several others we are abl
 e to obtain coupled-channel scattering amplitudes with resonant structures
  in the complex plane. Results regarding the rho resonance at multiple pio
 n masses\, and an a0 resonance seen in strongly-coupled pi-eta\, K-Kbar sc
 attering will also be presented.
LOCATION:B1.19\, DAMTP
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