### Abstract

Triply heavy baryons are very interesting systems analogous to heavy quarkonia, but are difficult to access experimentally. Lattice QCD can provide precise predictions for these systems, which can be compared to other theoretical approaches. In this work, the spectrum of excited states of the Ω_{bbb} baryon is calculated using lattice NRQCD for the b quarks, and using a domain-wall action for the u, d and s sea quarks. The calculations are done for multiple values of the sea-quark masses, and for two different lattice spacings. The energies of states with angular momentum up to J = 7/2 are calculated, and the effects of rotational symmetry breaking by the lattice are analyzed. Precise results are obtained even for the small spin-dependent energy splittings, and the contributions of individual NRQCD interactions to these energy splittings are studied. The results are compared to potential-model calculations.

Original language | English (US) |
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Title of host publication | Proceedings of Science |

State | Published - 2012 |

Externally published | Yes |

Event | 10th Conference on Quark Confinement and the Hadron Spectrum, Confinement 2012 - Munich, Germany Duration: Oct 8 2012 → Oct 12 2012 |

### Other

Other | 10th Conference on Quark Confinement and the Hadron Spectrum, Confinement 2012 |
---|---|

Country | Germany |

City | Munich |

Period | 10/8/12 → 10/12/12 |

### Fingerprint

### ASJC Scopus subject areas

- General

### Cite this

**Ω _{bbb}excited-state spectroscopy from lattice QCD.** / Meinel, Stefan.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

_{bbb}excited-state spectroscopy from lattice QCD. in

*Proceedings of Science.*10th Conference on Quark Confinement and the Hadron Spectrum, Confinement 2012, Munich, Germany, 10/8/12.

_{bbb}excited-state spectroscopy from lattice QCD. In Proceedings of Science. 2012

}

TY - GEN

T1 - Ωbbbexcited-state spectroscopy from lattice QCD

AU - Meinel, Stefan

PY - 2012

Y1 - 2012

N2 - Triply heavy baryons are very interesting systems analogous to heavy quarkonia, but are difficult to access experimentally. Lattice QCD can provide precise predictions for these systems, which can be compared to other theoretical approaches. In this work, the spectrum of excited states of the Ωbbb baryon is calculated using lattice NRQCD for the b quarks, and using a domain-wall action for the u, d and s sea quarks. The calculations are done for multiple values of the sea-quark masses, and for two different lattice spacings. The energies of states with angular momentum up to J = 7/2 are calculated, and the effects of rotational symmetry breaking by the lattice are analyzed. Precise results are obtained even for the small spin-dependent energy splittings, and the contributions of individual NRQCD interactions to these energy splittings are studied. The results are compared to potential-model calculations.

AB - Triply heavy baryons are very interesting systems analogous to heavy quarkonia, but are difficult to access experimentally. Lattice QCD can provide precise predictions for these systems, which can be compared to other theoretical approaches. In this work, the spectrum of excited states of the Ωbbb baryon is calculated using lattice NRQCD for the b quarks, and using a domain-wall action for the u, d and s sea quarks. The calculations are done for multiple values of the sea-quark masses, and for two different lattice spacings. The energies of states with angular momentum up to J = 7/2 are calculated, and the effects of rotational symmetry breaking by the lattice are analyzed. Precise results are obtained even for the small spin-dependent energy splittings, and the contributions of individual NRQCD interactions to these energy splittings are studied. The results are compared to potential-model calculations.

UR - http://www.scopus.com/inward/record.url?scp=84887544255&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887544255&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84887544255

BT - Proceedings of Science

ER -