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Title: Superconformal Baryon-Meson Symmetry and Light-Front Holographic QCD

We construct an effective QCD light-front Hamiltonian for both mesons and baryons in the chiral limit based on the generalized supercharges of a superconformal graded algebra. The superconformal construction is shown to be equivalent to a semi-classical approximation to light-front QCD and its embedding in AdS space. The specific breaking of conformal invariance inside the graded algebra uniquely determines the effective confinement potential. The generalized supercharges connect the baryon and meson spectra to each other in a remarkable manner. In particular, the π/b1 Regge trajectory is identified as the superpartner of the nucleon trajectory. However, the lowest-lying state on this trajectory, the π-meson is massless in the chiral limit and has no supersymmetric partner.
Authors:
 [1] ;  [2] ;  [3]
  1. Institut fuer Theoretische Physik, Heidelberg (Germany)
  2. Universidad de Costa Rica, San Jose (Costa Rica)
  3. SLAC National Accelerator Laboratory, Menlo Park, CA (United States)
Publication Date:
OSTI Identifier:
1168438
Report Number(s):
SLAC-PUB--16184
Journal ID: ISSN 1550-7998; PRVDAQ; arXiv:1501.00959; TRN: US1600834
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 91; Journal Issue: 8; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Research Org:
SLAC National Accelerator Laboratory, Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Phenomenology-HEP, Theory-HEP,HEPEX, HEPTH