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arXiv · 1902.00026

Spectrum of light- and heavy-baryons

Si-Xue Qin·Craig D. Roberts·Sebastian M. Schmidt
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Abstract

A symmetry-preserving truncation of the strong-interaction bound-state equations is used to calculate the spectrum of ground-state $J=1/2^+$, $3/2^+$ $(qq^\prime q^{\prime\prime})$-baryons, where $q, q^\prime, q^{\prime\prime} \in \{u,d,s,c,b\}$, their first positive-parity excitations and parity partners. Using two parameters, a description of the known spectrum of 39 such states is obtained, with a mean-absolute-relative-difference between calculation and experiment of 3.6(2.7)%. From this foundation, the framework is subsequently used to predict the masses of 90 states not yet seen empirically.

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Si-Xue Qin, Craig D. Roberts, Sebastian M. Schmidt. 2019-01-31. Spectrum of light- and heavy-baryons. https://doi.org/10.1007/s00601-019-1488-x

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