2026-06-29T07:42:20Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/439512023-08-25T14:40:47Zcom_20.500.14352_14col_20.500.14352_15
Probing the infrared quark mass from highly excited baryons
Llanes Estrada, Felipe José
Bicudo, Pedro
Cardoso, M
53
Chiral-Symmetry Breaking
Effective Restoration
Meson Spectrum
Model
Confinement
Lattice
Qcd
Física (Física)
22 Física
© 2009 The American Physical Society.
We thank L. Glozman for useful conversations and grants FPA 2008-00592/FPA, FIS2008-01323, CERN/FP/83582/2008, POCI/FP/81933/2007, /81913/2007, PDCT/FP/63907/2005, and /63923/2005, Spain-Portugal billateral grant HP2006-0018/E-56/07, as well as the Scientific Research Fund of Flanders.
We argue that three-quark excited states naturally group into quartets, split into two parity doublets, and that the mass splittings between these parity partners decrease higher up in the baryon spectrum. This decreasing mass difference can be used to probe the running quark mass in the midinfrared power-law regime. A measurement of masses of high-partial-wave resonances should be sufficient to unambiguously establish the approximate degeneracy. We test this concept with the first computation of excited high-j baryon masses in a chirally invariant quark model.
Spain-Portugal billateral
Scientific Research Fund of Flanders
FPA
Depto. de Física Teórica
Fac. de Ciencias Físicas
TRUE
pub
2023-06-20T03:34:57Z
2023-06-20T03:34:57Z
2009-08-28
journal article
https://hdl.handle.net/20.500.14352/43951
0031-9007
10.1103/PhysRevLett.103.092003
eng
2008-00592/FPA
FIS2008-01323
CERN/FP/83582/2008
POCI/FP/81933/2007
POCI/FP/81913/2007
PDCT/FP/63907/2005
PDCT/FP/63923/2005
HP2006-0018/E-56/07
open access
application/pdf
American Physical Society