Baryon Resonances from a Novel Fat-Link Fermion Action

Conference · Sun Jul 01 00:00:00 EDT 2001

OSTI ID:789642

Melnitchouk, W; Bilson-Thompson, S; R Bonnet, F D; Coddington, P D; Lee, F X; Leinweber, D B; Williams, A G; Zanotti, J M; Zhang, J B

We present first results for masses of positive and negative parity excited baryons in lattice QCD using an O(a{sup 2}) improved gluon action and a Fat Link Irrelevant Clover (FLIC) fermion action in which only the irrelevant operators are constructed with fat links. The results are in agreement with earlier calculations of N* resonances using improved actions and exhibit a clear mass splitting between the nucleon and its chiral partner, even for the Wilson fermion action. The results also indicate a splitting between the lowest J{sup P}=1/2{sup -} states for the standard nucleon interpolating fields.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 789642
• Report Number(s): JLAB-THY-01-40; DOE/ER/40150-1970; ADP-01-55/T487; TRN: US0200194
• Resource Relation: Conference: Proceedings of Workshop on Lattice Hadron Physics, Cairns (AU), 07/09/2001--07/18/2001; Other Information: PBD: 1 Jul 2001
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
N*BARYONS
FERMIONS
GLUONS
PARITY
QUANTUM CHROMODYNAMICS
CHIRALITY