BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Stanley Brodsky (SLAC) DTSTART:20210419T180000Z DTEND:20210419T190000Z DTSTAMP:20260423T042131Z UID:UKYhepth/38 DESCRIPTION:Title: Color Confinement and Supersymmetric Features of Hadron Physics from Lig ht-Front Holography\nby Stanley Brodsky (SLAC) as part of Theoretical Physics Seminars (Kentucky)\n\n\nAbstract\nI will review applications of s uperconformal algebra\, light-front holography\, and an extended form of c onformal symmetry to hadron spectroscopy and dynamics. QCD is not supersy mmetrical in the traditional sense -- the QCD Lagrangian is based on quark and gluonic fields -- not squarks nor gluinos. However\, its hadronic eig ensolutions conform to a representation of superconformal algebra\, reflec ting the underlying conformal symmetry of chiral QCD. The eigensolutions o f superconformal algebra provide a unified Regge spectroscopy of meson\, b aryon\, and tetraquarks of the same parity and twist as equal-mass members of the same 4-plet representation with a universal Regge slope. The pion $q \\bar q$ eigenstate is composite but yet has zero mass for $m_q=0.$ Lig ht-Front Holography also predicts the form of the nonperturbative QCD run ning coupling: $\\alpha_s(Q^2) \\propto \\exp{-{Q^2/4 \\kappa^2}}$\, in agreement with the effective charge determined from measurements of the B jorken sum rule. One also obtains viable predictions for tests of hadron dynamics such as spacelike and timelike hadronic form factors\, structure functions\, distribution amplitudes\, and transverse momentum distribution s. The combined approach of light-front holography and superconformal alge bra also provides insight into the origin of the QCD mass scale and color confinement.\n\nPassword: Theory\n LOCATION:https://researchseminars.org/talk/UKYhepth/38/ END:VEVENT END:VCALENDAR