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High Energy Physics - Lattice

arXiv:1311.4806 (hep-lat)
[Submitted on 19 Nov 2013 (v1), last revised 22 Jan 2014 (this version, v2)]

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

Authors:M. Padmanath, Robert G. Edwards, Nilmani Mathur, Michael Peardon
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Abstract: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)$\otimes$O(3) symmetry.
Comments: to appear in the proceedings of The 6th International Workshop on Charm Physics (CHARM 2013)
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1311.4806 [hep-lat]
  (or arXiv:1311.4806v2 [hep-lat] for this version)
  https://doi.org/10.48550/arXiv.1311.4806

Submission history

From: M Padmanath [view email]
[v1] Tue, 19 Nov 2013 17:06:02 UTC (179 KB)
[v2] Wed, 22 Jan 2014 16:46:07 UTC (179 KB)
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