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Title: Spectroscopy of charmed baryons from lattice QCD

We present the ground and excited state spectra of singly, doubly and triply charmed baryons by using dynamical lattice QCD. A large set of baryonic operators that respect the symmetries of the lattice and are obtained after subduction from their continuum analogues are utilized. Using novel computational techniques correlation functions of these operators are generated and the variational method is exploited to extract excited states. The lattice spectra that we obtain have baryonic states with well-defined total spins up to 7/2 and the low lying states remarkably resemble the expectations of quantum numbers from SU(6) x O(3) symmetry. Various energy splittings between the extracted states, including splittings due to hyperfine as well as spin-orbit coupling, are considered and those are also compared against similar energy splittings at other quark masses.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Univ. of Graz (Austria). Inst. of Physics
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Tata Institute of Fundamental Research, Bombay (India)
  4. Trinity College, Dublin (Ireland)
Publication Date:
OSTI Identifier:
1183726
Report Number(s):
JLAB-THY--14-1991; DOE/OR/23177--3259; arXiv:1410.8791
TRN: US1600160
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: Lattice 2014, Brookhaven, NY (United States), 23-28 Jun 2014; Related Information: Proceedings of Science (POS)
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHARMED BARYONS; QUANTUM CHROMODYNAMICS; GROUND STATES; EXCITED STATES; CORRELATION FUNCTIONS; VARIATIONAL METHODS; QUARKS; SPIN; O GROUPS; SU-6 GROUPS; QUANTUM NUMBERS; HYPERFINE STRUCTURE; LATTICE FIELD THEORY; L-S COUPLING; QUANTUM OPERATORS