Excited state baryon spectroscopy from lattice QCD

Dudek, Jozef J.; Richards, David G.; Wallace, Stephen J.

doi:10.1103/PhysRevD.84.074508

Title: Excited state baryon spectroscopy from lattice QCD

Journal Article · Mon Oct 31 00:00:00 EDT 2011 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.84.074508· OSTI ID:1029187

Dudek, Jozef J. ^[1]; Richards, David G. ^[2]; Wallace, Stephen J. ^[3]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States). Dept of Physics
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Univ. of Maryland, College Park, MD (United States). Dept of Physics

Here, we present a calculation of the Nucleon and Delta excited state spectrum on dynamical anisotropic clover lattices. A method for operator construction is introduced that allows for the reliable identification of the continuum spins of baryon states, overcoming the reduced symmetry of the cubic lattice. Using this method, we are able to determine a spectrum of single-particle states for spins up to and including $J = 7/2$, of both parities, the first time this has been achieved in a lattice calculation. We find a spectrum of states identifiable as admixtures of $SU(6) Ⓧ O(3)$ representations and a counting of levels that is consistent with the non-relativistic $qqq$ constituent quark model. This dense spectrum is incompatible with quark-diquark model solutions to the "missing resonance problem" and shows no signs of parity doubling of states.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Contributing Organization:: Hadron Spectrum Collaboration

Grant/Contract Number:: AC05-06OR23177; FG02-93ER-40762

OSTI ID:: 1029187

Alternate ID(s):: OSTI ID: 1101062

Report Number(s):: JLAB-THY-11-1370; DOE/OR/23177-1542; arXiv:1104.5152; PRVDAQ; TRN: US1105657

Journal Information:: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 84, Issue 7; ISSN 1550-7998

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 283 works

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Decay constants of the pion and its excitations on the lattice Mastropas, Ekaterina V.; Richards, David G. arXiv https://doi.org/10.48550/arxiv.1403.5575	text	January 2014
A novel analysis method for excited states in lattice QCD - the nucleon case Alexandrou, C.; Leontiou, T.; Papanicolas, C. N. arXiv https://doi.org/10.48550/arxiv.1411.6765	text	January 2014
Lattice baryon spectroscopy with multi-particle interpolators Kiratidis, Adrian L.; Kamleh, Waseem; Leinweber, Derek B. arXiv https://doi.org/10.48550/arxiv.1501.07667	text	January 2015
Hadron Structure and Spectrum from the Lattice Lang, C. B. arXiv https://doi.org/10.48550/arxiv.1512.05545	text	January 2015
Baryons and the Borromeo Roberts, Craig D.; Segovia, Jorge arXiv https://doi.org/10.48550/arxiv.1603.02722	text	January 2016
Nucleon matrix elements using the variational method in lattice QCD Dragos, Jack; Horsley, Roger; Kamleh, Waseem arXiv https://doi.org/10.48550/arxiv.1606.03195	text	January 2016
A lattice QCD study of pion-nucleon scattering in the Roper channel Leskovec, Luka; Lang, Christian B.; Padmanath, M. arXiv https://doi.org/10.48550/arxiv.1806.02363	text	January 2018
Spectroscopy of light $N^{*}$ baryons Shah, Zalak; Gandhi, Keval; Rai, Ajay Kumar arXiv https://doi.org/10.48550/arxiv.1812.04858	text	January 2018
Masses of ground-state mesons and baryons, including those with heavy quarks Yin, Pei-Lin; Chen, Chen; Krein, Gastao arXiv https://doi.org/10.48550/arxiv.1903.00160	text	January 2019

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