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SUMMARY:Dimer Effective Field Theory
DTSTART:20260615T140000Z
DTEND:20260615T160000Z
DTSTAMP:20260701T090600Z
UID:indico-event-1696090@indico.cern.ch
DESCRIPTION:Speakers: David Benjamin Kaplan (American University)\n\nWeinb
 erg’s vision of applying effective field theory to nuclear physics has b
 een stubbornly difficult to realize as a systematic momentum expansion lik
 e chiral perturbation theory for mesons.  At the very least one would hop
 e to describe nucleon-nucleon scattering well up to the pion production th
 reshold\, but even that has been problematic.  I argue that the culprit m
 ay be unsuspected resonance structures in the complex momentum plane assoc
 iated with the spin-triplet partial waves relatively close to the origin w
 hich obstruct a momentum expansion.  By including new degrees of freedom 
 in the EFT — “dimers” we show that the radius of convergence of the 
 theory is greatly improved with excellent agreement with data at low order
  in the expansion.\nmaterial:  https://arxiv.org/abs/2603.28842\n\nhttps:
 //indico.cern.ch/event/1696090/
LOCATION:4/2-037 - TH meeting room (CERN)
URL:https://indico.cern.ch/event/1696090/
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