Low-lying baryon resonances from lattice QCD

被引：0

作者：

Bulava, John ^{[1
]}

Cid-Mora, Barbara ^{[2
]}

Hanlon, Andrew d. ^{[3
]}

Horz, Ben ^{[4
]}

Mohler, Daniel ^{[2
,5
]}

Morningstar, Colin ^{[6
]}

Moscoso, Joseph ^{[7
]}

Nicholson, Amy ^{[7
]}

Romero-lopez, Fernando ^{[8
]}

Skinner, Sarah ^{[6
]}

Walker-loud, Andre ^{[9
]}

机构：

[1] Ruhr Univ Bochum, Inst Theoret Phys 2, Fak Phys & Astron, D-44780 Bochum, Germany

[2] GSI Helmholtz Ctr Heavy Ion Res Darmstadt, Darmstadt, Germany

[3] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA

[4] Intel Deutschland GmbH, Dornacher Str 1, D-85622 Feldkirchen, Germany

[5] Tech Univ Darmstadt, Inst Kernphys, Schlossgartenstr 2, D-64289 Darmstadt, Germany

[6] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

[7] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27516 USA

[8] Massachusetts Inst Technol Cambridge, Ctr Theor Phys, Cambridge, MA 02139 USA

[9] Lawrence Berkeley Natl Lab Berkeley, Nucl Sci Div, Berkeley, CA 94720 USA

来源：

NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS | 2024年 / 47卷 / 04期

关键词：

D O I：

10.1393/ncc/i2024-24165-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent results studying the masses and widths of low-lying baryon resonances in lattice QCD are presented. The S -wave N pi scattering lengths for both total isospins I = 1 / 2 and I = 3 / 2 are inferred from the finite -volume spectrum below the inelastic threshold together with the I = 3 / 2 P -wave containing the Delta(1232) resonance. A lattice QCD computation employing a combined basis of three -quark and meson -baryon interpolating operators with definite momentum to determine the coupled channel Sigma pi - NK scattering amplitude in the Lambda(1405) region is also presented. Our results support the picture of a two -pole structure suggested by theoretical approaches based on SU (3) chiral symmetry and unitarity.

引用

页数：5

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