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SUMMARY:Gauge Theory Bootstrap: predicting pion dynamics from QCD
DTSTART:20260601T120000Z
DTEND:20260601T130000Z
DTSTAMP:20260714T130400Z
UID:indico-event-1656730@indico.cern.ch
DESCRIPTION:Speakers: Yifei He\n\nI will present the Gauge Theory Bootstra
 p\, a framework for computing the strongly coupled pion dynamics by constr
 ucting the most general scattering matrix\, form factors and spectral dens
 ities consistent with physical principles and matched with perturbative QC
 D at high energies and with weakly coupled pions at low energies. This is 
 a theoretical/numerical approach that uses as only input the pion mass m_\
 \pi​\, pion decay constant f_\\pi​ and the QCD parameters N_c\, N_f​
 \, m_q and alpha_s​. Within this framework\, we compute pion scattering 
 phase shifts and form factors and extract the low-energy constants in the 
 effective theory. In particular\, we find the rho(770)\, f_2​(1270) and 
 rho(1450) resonances in reasonable agreement with experimental data. Using
  these results\, we discuss the thermodynamics of a pion gas including pai
 r correlations of pions with same and opposite charge.References:[1] YH an
 d Martin Kruczenski\, Phys. Rev. Lett. 133\, 191601 and Phys. Rev. D 11
 0\, 096001.[2] YH and Martin Kruczenski\, arXiv: 2403.10772.[3] YH and M
 artin Kruczenski\, arXiv: 2505.19332.\n\nhttps://indico.cern.ch/event/165
 6730/\n\nZoom: https://cern.zoom.us/j/62752332519?pwd=cVNpK2kySnJDOCs2cVds
 eXZpTktTdz09
LOCATION:4/2-037 - TH meeting room (CERN)
URL:https://indico.cern.ch/event/1656730/
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