Nucleon excited states in Nf=2 lattice QCD

被引：23

作者：

Alexandrou, C. ^{[1
,2
]}

Korzec, T. ^{[3
]}

Koutsou, G. ^{[2
]}

Leontiou, T. ^{[4
]}

机构：

[1] Univ Cyprus, Dept Phys, CY-1678 Nicosia, Cyprus

[2] Cyprus Inst, CY-1645 Nicosia, Cyprus

[3] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[4] Frederick Univ, Gen Dept, CY-1036 Nicosia, Cyprus

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 03期

关键词：

2+1 FLAVOR QCD; GLUEBALL MASSES; ROPER RESONANCE;

D O I：

10.1103/PhysRevD.89.034502

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the excited states of the nucleon using N-f = 2 twisted mass gauge configurations with pion masses in the range of about 270 to 450 MeV and one ensemble of N-f = 2 Clover fermions at almost physical pion mass. We use two different sets of variational bases and study the resulting generalized eigenvalue problem. We present results for the two lowest positive and negative parity states.

引用

页数：10

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