RT Journal Article
T1 Probing the infrared quark mass from highly excited baryons
A1 Llanes Estrada, Felipe José
A1 Bicudo, Pedro
A1 Cardoso, M
AB 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.
PB American Physical Society
SN 0031-9007
YR 2009
FD 2009-08-28
LK https://hdl.handle.net/20.500.14352/43951
UL https://hdl.handle.net/20.500.14352/43951
LA eng
NO © 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.
NO Spain-Portugal billateral
NO Scientific Research Fund of Flanders
NO FPA
DS Docta Complutense
RD 8 abr 2025