Octet baryon masses and sigma terms in covariant baryon chiral perturbation theory

Xiu Lei Ren; Li Sheng Geng; Jie Meng

doi:10.1142/9789814618229_0033

Octet baryon masses and sigma terms in covariant baryon chiral perturbation theory

Xiu Lei Ren
, Li Sheng Geng
, Jie Meng

Sino-French Engineer School/School of General Engineering

Beihang University
Peking University
Stellenbosch University

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

We report an analysis of the octet baryon masses using the covariant baryon chiral perturbation theory up to next-to-next-to-next-to-leading order with and without the virtual decuplet contributions. Particular attention is paid to the finite-volume corrections and the finite lattice spacing effects on the baryon masses. A reasonable description of all the publicly available n_f = 2 + 1 lattice QCD data is achieved. Utilyzing the Feynman-Hellmann theorem, we determine the nucleon sigma terms as σ_πN = 55(1)(4) MeV and σ_sN = 27(27)(4) MeV.

Original language	English
Title of host publication	Chiral Symmetry in Hadrons and Nuclei
Publisher	World Scientific Publishing Co.
Pages	181-185
Number of pages	5
ISBN (Electronic)	9789814618229
ISBN (Print)	9789814618212
DOIs	https://doi.org/10.1142/9789814618229_0033
State	Published - 1 Jan 2014

Keywords

Baryon resonances
Chiral lagrangians
Lattice QCD calculations

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10.1142/9789814618229_0033

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abstract = "We report an analysis of the octet baryon masses using the covariant baryon chiral perturbation theory up to next-to-next-to-next-to-leading order with and without the virtual decuplet contributions. Particular attention is paid to the finite-volume corrections and the finite lattice spacing effects on the baryon masses. A reasonable description of all the publicly available nf = 2 + 1 lattice QCD data is achieved. Utilyzing the Feynman-Hellmann theorem, we determine the nucleon sigma terms as σπN = 55(1)(4) MeV and σsN = 27(27)(4) MeV.",

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T1 - Octet baryon masses and sigma terms in covariant baryon chiral perturbation theory

AU - Ren, Xiu Lei

AU - Geng, Li Sheng

AU - Meng, Jie

PY - 2014/1/1

Y1 - 2014/1/1

N2 - We report an analysis of the octet baryon masses using the covariant baryon chiral perturbation theory up to next-to-next-to-next-to-leading order with and without the virtual decuplet contributions. Particular attention is paid to the finite-volume corrections and the finite lattice spacing effects on the baryon masses. A reasonable description of all the publicly available nf = 2 + 1 lattice QCD data is achieved. Utilyzing the Feynman-Hellmann theorem, we determine the nucleon sigma terms as σπN = 55(1)(4) MeV and σsN = 27(27)(4) MeV.

AB - We report an analysis of the octet baryon masses using the covariant baryon chiral perturbation theory up to next-to-next-to-next-to-leading order with and without the virtual decuplet contributions. Particular attention is paid to the finite-volume corrections and the finite lattice spacing effects on the baryon masses. A reasonable description of all the publicly available nf = 2 + 1 lattice QCD data is achieved. Utilyzing the Feynman-Hellmann theorem, we determine the nucleon sigma terms as σπN = 55(1)(4) MeV and σsN = 27(27)(4) MeV.

KW - Baryon resonances

KW - Chiral lagrangians

KW - Lattice QCD calculations

UR - https://www.scopus.com/pages/publications/85013453441

U2 - 10.1142/9789814618229_0033

DO - 10.1142/9789814618229_0033

M3 - 章节

AN - SCOPUS:85013453441

SN - 9789814618212

SP - 181

EP - 185

BT - Chiral Symmetry in Hadrons and Nuclei

PB - World Scientific Publishing Co.

ER -

Octet baryon masses and sigma terms in covariant baryon chiral perturbation theory

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Keywords

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