検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

The Negative-parity spin-1/2 $$Lambda$$ baryon spectrum from lattice QCD and effective theory

格子QCD及び有効理論によるスピン1/2負パリティ$$Lambda$$バリオン

Pavao, R.*; Gubler, P. ; Fernandez-Soler, P.*; Nieves, J.*; 岡 眞  ; 高橋 徹*

Pavao, R.*; Gubler, P.; Fernandez-Soler, P.*; Nieves, J.*; Oka, Makoto; Takahashi, Toru*

The spectrum of the negative-parity spin-1/2 $$Lambda$$ baryons is studied using lattice QCD and hadronic effective theory in a unitarized coupled-channel framework. A direct comparison between the two approaches is possible by considering the hadronic effective theory in a finite volume and with hadron masses and mesonic decay constants that correspond to the situation studied on the lattice. Comparing the energy level spectrum and $$SU(3)$$ flavor decompositions of the individual states, itis found that the lowest two states extracted from lattice QCD can be identified with one of the two $$Lambda$$(1405)-poles and the $$Lambda$$(1670) resonance. The quark mass dependences of these two lattice QCD levels are in good agreement with their effective theory counterparts.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.