Axial anomaly and pion mass difference

1990 ◽  
Vol 42 (7) ◽  
pp. 2347-2349 ◽  
Author(s):  
Fayyazuddin ◽  
Riazuddin
Keyword(s):  
Pion Mass ◽  
Mass Difference ◽  
Axial Anomaly

Pion Mass Difference in Bars-Halpern-Yoshimura Unified Gauge Model

1976 ◽  
Vol 31 (11) ◽  
pp. 1429-1430
Author(s):  
Satya N. Sinha
Keyword(s):  
Pion Mass ◽  
Mass Difference ◽  
Unified Model ◽  
Gauge Model ◽  
Perturbative Calculation ◽  
Soft Pion

Abstract Pion mass difference has been calculated in the renormalizable gauge model of Bars-Halpern-Yoshimura. It is found that the soft pion mass difference is finite in the lowest order perturbative calculation, similar to the result obtained in the unified model of Salam-Weinberg. The mass difference of Kaon has also been discussed.

scholarly journals Baryon Spin and Magnetic Moments in Relativistic Chiral Quark Models

1997 ◽  
Vol 06 (04) ◽  
pp. 693-709 ◽  
Author(s):  
H. J. Weber ◽  
K. Bodoor
Keyword(s):  
Quark Model ◽  
Light Cone ◽  
Magnetic Moments ◽  
Mass Difference ◽  
Relativistic Effects ◽  
Baryon Octet ◽  
Axial Anomaly ◽  
Gluon Contribution ◽  
Goldstone Bosons ◽  
Quark Models

The spin and flavor fractions of constituent quarks in the baryon octet are obtained from their lowest order chiral fluctuations involving Goldstone bosons. SU(3) breaking suggested by the mass difference between the strange and up, down quarks is included, as are relativistic effects by means of a light-cone quark model for the proton, and the gluon contribution from the axial anomaly in the singlet channel. Magnetic moments from the Karl-Sehgal formulas are analyzed in this framework as well.

Schwinger's chiral dynamics and the pion mass difference

1968 ◽  
Vol 46 (2) ◽  
pp. 326-334 ◽  
Author(s):  
D.B Fairlie ◽  
K Yoshida
Keyword(s):  
Pion Mass ◽  
Mass Difference

Pion mass difference fromSU 2 current algebra and quark model

1967 ◽  
Vol 47 (3) ◽  
pp. 626-633 ◽  
Author(s):  
A. Frenkel ◽  
M. Posch ◽  
G. Surányi ◽  
P. Surányi
Keyword(s):  
Quark Model ◽  
Current Algebra ◽  
Pion Mass ◽  
Mass Difference

scholarly journals Simulation of an ensemble of Nf = 2 + 1 + 1 twisted mass cloverimproved fermions at physical quark masses

2018 ◽  
Vol 175 ◽  
pp. 02003 ◽  
Author(s):  
Jacob Finkenrath ◽  
Constantia Alexandrou ◽  
Simone Bacchio ◽  
Panagiotis Charalambous ◽  
Petros Dimopoulos ◽  
...  
Keyword(s):  
Pion Mass ◽  
Mass Difference ◽  
Target System ◽  
General Strategy ◽  
Decay Constants ◽  
Quark Masses ◽  
Twisted Mass ◽  
Kaon Mass ◽  
Physical Mass ◽  
The Moment

We present a general strategy aimed at generating Nf = 2+1+1 configurations with quarks at their physical mass using maximally twisted mass fermions to ensure automatic O(a) improvement, in the presence of a clover term tuned to reduce the charged to neutral pion mass difference. The target system, for the moment, is a lattice of size 643 × 128 with a lattice spacing a ~ 0:08 fm. We show preliminary results on the pion and kaon mass and decay constants.

Gauge theories and the pion mass difference

1974 ◽  
Vol 71 (1) ◽  
pp. 111-118 ◽  
Author(s):  
D.R.T. Jones
Keyword(s):  
Gauge Theories ◽  
Pion Mass ◽  
Mass Difference
Sign in / Sign up

Export Citation Format

Share Document