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SUMMARY:Discovering Hybrid Mesons
DTSTART;VALUE=DATE-TIME:20260612T023000Z
DTEND;VALUE=DATE-TIME:20260612T043000Z
DTSTAMP;VALUE=DATE-TIME:20260609T022900Z
UID:indico-event-29870@indico.ihep.ac.cn
DESCRIPTION: \n\nhttps://zoom.us/j/99876774561?pwd=HeVtHH9mVQsr8NXK78uVOb
 xOiDFDqM.1\n\nPassword: 151723\n\n \n\nAbstract:\n\nIn the absence of cl
 ear signals of new particles at the energy frontier\, precision Recent de
 velopments in the theory and phenomenology of QCD exotic hybrid mesons wil
 l be reviewed\, focussing on prospects for finding such states at COMPAS
 S\, GlueX\, and BESIII.  This is followed by an examination of methods t
 o extend traditional methods of fitting data\, which involve hypothesis te
 sting\, with "discovery" declared if the null hypothesis is rejected. This
  approach often assumes that the data is generated by the model\, under-es
 timates systematic errors\, and leads to overfitting.  Common methods for
  overcoming the last issue\, such as LASSO\, AIC\, and BIC do not perform 
 well.  In addition\, the entire methodology relies on the dubious prospec
 t of finding the global minimum of a complex multidimensional objective fu
 nction.  I propose to address these issues by reframing discovery as "pre
 dictiveness" -- namely does a postulated effect (eg\, a new particle) assi
 st in predicting new measurements. The method obviates many of the traditi
 onal problems and leads to more robust results. The implementation of the 
 scheme and applications to simple problems will be presented. \n\nAbout t
 he speaker：\nEric Swanson is a professor of physics at the University o
 f Pittsburgh\, with previous positions  at North Carolina State Universit
 y and the Massachusetts Institute of Technology. He was a visiting student
  at Oxford University before obtaining his PhD from the University of Toro
 nto in 1991. He has published more than 100 papers on theoretical hadronic
  physics\, condensed matter physics\, biophysics\, and science communicati
 on. Swanson was named an American Physical Society Fellow for his work on 
 exotic particles and is a founder of the Topical Group on Hadronic Physics
  of the APS. He is the author of “Science and Society”\, “Applied Co
 mputational Physics”\, and numerous op-eds on science issues. He is curr
 ently a consultant for the telecoms group CTIA and a spokesperson for the 
 DOE ExoHadTopical Collaboration.\nhttps://indico.ihep.ac.cn/event/29870/
URL:https://indico.ihep.ac.cn/event/29870/
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