Excited-state spectroscopy of singly, doubly and triply-charmed baryons from lattice QCD

Conference · Tue Jul 01 00:00:00 EDT 2014

OSTI ID:1178625

Padmanath, M. ^[1]; Edwards, Robert G. ^[2]; Mathur, Nilmani ^[1]; Peardon, Michael ^[3]

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1. Tata Institute
2. JLAB
3. Trinity College

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. These operators transform as irreducible representations of SU(3)F symmetry for flavour, SU(4) symmetry for Dirac spins of quarks and O(3) symmetry for orbital angular momenta. 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)ⓍO(3) symmetry.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1178625
• Report Number(s): JLAB-THY-14-1832; DOE/OR/23177-2962; arXiv:1311.4806
• Resource Relation: Conference: Charm 2013, Manchester, UK, August 31-September 4, 2013
• Country of Publication: United States
• Language: English