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SUMMARY:Contributions of Electromagnetic Interaction to Hadron Masses
DTSTART;VALUE=DATE-TIME:20261011T082500Z
DTEND;VALUE=DATE-TIME:20261011T084000Z
DTSTAMP;VALUE=DATE-TIME:20261005T114057Z
UID:indico-contribution-2837@indico.itp.ac.cn
DESCRIPTION:Speakers: 奕扬 刘 (ITP\, CAS)\nElectromagnetic effects are 
 increasingly relevant to precision hadron spectroscopy\, yet their evoluti
 on across the light\, strange\, charm\, and bottom sectors remains poorly 
 mapped. We calculate the leading QED corrections to meson and baryon masse
 s using electroquenched photons on nine 2+1-flavor\, tadpole-improved clov
 er ensembles at three lattice spacings\, with pion masses from 135 to 316 
 MeV and spatial extents from approximately 2.5 to 6.7 fm. The quark masses
  are matched in the Dashen scheme\, and the results are extrapolated joint
 ly to the physical pion mass\, continuum limit\, and infinite volume. Reso
 lving each mass shift into quark self-energy and pairwise interaction term
 s\, we find that attractive electromagnetic interactions lower hadron mass
 es\, whereas repulsive interactions raise them. Most neutral hadrons recei
 ve corrections below 1 MeV\, while singly charged states receive correctio
 ns of at most about 5 MeV.\n\nhttps://indico.itp.ac.cn/event/437/contribut
 ions/2837/
LOCATION:会议楼2 CXII102
URL:https://indico.itp.ac.cn/event/437/contributions/2837/
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