scholarly journals Nucleon mass and pion-nucleon sigma term from a chiral analysis of lattice QCD world data

2014 ◽  
Vol 73 ◽  
pp. 04015 ◽  
Author(s):  
L. Alvarez-Ruso ◽  
T. Ledwig ◽  
J. Martin Camalich ◽  
M.J. Vicente Vacas
Keyword(s):  
Lattice Qcd ◽  
Chiral Analysis ◽  
Nucleon Mass ◽  
World Data ◽  
Sigma Term ◽  
Pion Nucleon

scholarly journals The nucleon mass and pion-nucleon sigma term from a chiral analysis ofNf= 2 lattice QCD world data

2014 ◽  
Vol 66 ◽  
pp. 06001
Author(s):  
L. Alvarez-Ruso ◽  
T. Ledwig ◽  
J. Martin Camalich ◽  
M. J. Vicente Vacas
Keyword(s):  
Lattice Qcd ◽  
Chiral Analysis ◽  
Nucleon Mass ◽  
World Data ◽  
Sigma Term ◽  
Pion Nucleon

scholarly journals Nucleon mass and pion-nucleon sigma term from a chiral analysis of lattice QCD data

2013 ◽  
Vol 88 (5) ◽  
Author(s):  
L. Alvarez-Ruso ◽  
T. Ledwig ◽  
J. Martin Camalich ◽  
M. J. Vicente-Vacas
Keyword(s):  
Lattice Qcd ◽  
Chiral Analysis ◽  
Nucleon Mass ◽  
Sigma Term ◽  
Pion Nucleon

scholarly journals THE NUCLEON MASS AND PION-NUCLEON SIGMA TERM FROM A CHIRAL ANALYSIS OF Nf = 2 + 1 LATTICE QCD WORLD DATA

2014 ◽  
Vol 26 ◽  
pp. 1460089 ◽  
Author(s):  
L. ALVAREZ-RUSO ◽  
T. LEDWIG ◽  
M. J. VICENTE VACAS ◽  
J. MARTIN-CAMALICH
Keyword(s):  
Lattice Qcd ◽  
Degrees Of Freedom ◽  
Pion Mass ◽  
Nucleon Mass ◽  
A Value ◽  
Natural Size ◽  
Sigma Term ◽  
Pion Nucleon ◽  
Pion Mass Dependence ◽  
Energy Constants

Fits of the p4 covariant SU(2) baryon chiral perturbation theory to lattice QCD nucleon mass data from several collaborations for 2 and 2+1 flavors are presented. We consider contributions from explicit Δ(1232) degrees of freedom, finite volume and finite spacing corrections. We emphasize here on our Nf = 2 + 1 study. We obtain low-energy constants of natural size that are compatible with the rather linear pion-mass dependence of the nucleon mass observed in lattice QCD. We report a value of σπN = 41(5)(4) MeV in the 2 flavor case and σπN = 52(3)(8) MeV for 2+1 flavors.

scholarly journals Pion-Nucleon Sigma Term from Lattice QCD

2021 ◽  
Vol 127 (24) ◽  
Author(s):  
Rajan Gupta ◽  
Sungwoo Park ◽  
Martin Hoferichter ◽  
Emanuele Mereghetti ◽  
Boram Yoon ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Sigma Term ◽  
Pion Nucleon

scholarly journals Nucleon mass, sigma term, and lattice QCD

2004 ◽  
Vol 69 (3) ◽  
Author(s):  
Massimiliano Procura ◽  
Thomas R. Hemmert ◽  
Wolfram Weise
Keyword(s):  
Lattice Qcd ◽  
Nucleon Mass ◽  
Sigma Term

scholarly journals Nucleon mass and sigma term from lattice QCD with two light fermion flavors

2013 ◽  
Vol 866 (1) ◽  
pp. 1-25 ◽  
Author(s):  
G.S. Bali ◽  
P.C. Bruns ◽  
S. Collins ◽  
M. Deka ◽  
B. Gläßle ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Nucleon Mass ◽  
Sigma Term ◽  
Light Fermion

scholarly journals The Sigma Term: Leading Non-Analytic Behaviour Of Decuplet Contributions

1994 ◽  
Vol 47 (1) ◽  
pp. 45 ◽  
Author(s):  
I Jameson ◽  
AA Rawlinson ◽  
AW Thomas
Keyword(s):  
Quark Mass ◽  
Mass Splitting ◽  
Analytic Structure ◽  
Nucleon Mass ◽  
Sigma Term ◽  
Pion Nucleon ◽  
Analytic Behaviour

We examine the analytic structure, in powers of the quark mass (m), of the chiral loop corrections to the pion-nucleon sigma term arising from coupling to the lowest mass baryon decuplet. The leading non-analytic term is found to go like m2 In(m/2a) (with a the delta-nucleon mass splitting), and to be quite significant numerically.

Breaking scale symmetry and the pion-nucleon sigma-term

1974 ◽  
Vol 10 (18) ◽  
pp. 855-860
Author(s):  
T. Becheekawy ◽  
S. J. Hakim
Keyword(s):  
Sigma Term ◽  
Pion Nucleon ◽  
Breaking Scale

scholarly journals The nucleon mass in Nf=2 lattice QCD: finite size effects from chiral perturbation theory

2004 ◽  
Vol 689 (3) ◽  
pp. 175-194 ◽  
Author(s):  
A. Ali Khan ◽  
T. Bakeyev ◽  
M. Göckeler ◽  
T.R. Hemmert ◽  
R. Horsley ◽  
...  
Keyword(s):  
Perturbation Theory ◽  
Lattice Qcd ◽  
Chiral Perturbation Theory ◽  
Size Effects ◽  
Finite Size ◽  
Nucleon Mass ◽  
Chiral Perturbation ◽  
Finite Size Effects
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