Spectral-function sum rules and the pion electromagnetic mass difference at finite temperature

1977 ◽  
Vol 15 (10) ◽  
pp. 3030-3036 ◽  
Author(s):  
L. R. Ram Mohan
Keyword(s):  
Spectral Function ◽  
Finite Temperature ◽  
Sum Rules ◽  
Mass Difference ◽  
Electromagnetic Mass

Sum rules and the electromagnetic mass difference of pions

1968 ◽  
Vol 5 (1) ◽  
pp. 140-146 ◽  
Author(s):  
C.L. Cook ◽  
L.E. Evans ◽  
M.Y. Han ◽  
N.R. Lipshutz ◽  
N. Straumann
Keyword(s):  
Sum Rules ◽  
Mass Difference ◽  
Electromagnetic Mass

THE ELECTROMAGNETIC MASS DIFFERENCE OF PIONS FROM QCD

1990 ◽  
Vol 05 (04) ◽  
pp. 747-753 ◽  
Author(s):  
M. MARGVELASHVILI
Keyword(s):  
Current Algebra ◽  
Sum Rules ◽  
Mass Difference ◽  
Electromagnetic Mass ◽  
Vacuum Condensate ◽  
Qcd Sum Rules ◽  
Standard Value ◽  
Good Agreement

It is shown that the two point functions of definite class can be calculated, at small spacelike momenta, as subtraction constants in the Borel transformed QCD sum rules. Using the results of current algebra and PCAC, we obtain three different sum rules for determination of the electromagnetic mass difference of pions. The result is in a good agreement with experiment, and confirms the standard value for the four-quark vacuum condensate.

scholarly journals Cottingham formula and the pion electromagnetic mass difference at finite temperature

1999 ◽  
Vol 465 (1-4) ◽  
pp. 241-248 ◽  
Author(s):  
M. Ladisa ◽  
G. Nardulli ◽  
S. Stramaglia
Keyword(s):  
Finite Temperature ◽  
Mass Difference ◽  
Electromagnetic Mass

THE CALCULATION OF THE ELECTROMAGNETIC π+−π0 MASS DIFFERENCE WITHIN QCD

1992 ◽  
Vol 07 (26) ◽  
pp. 6523-6535 ◽  
Author(s):  
A.A. PIVOVAROV
Keyword(s):  
Reasonable Agreement ◽  
Sum Rules ◽  
Chiral Limit ◽  
Mass Difference ◽  
Electromagnetic Mass ◽  
Qcd Sum Rules ◽  
K Mesons

The electromagnetic π+−π0 mass difference is calculated with QCD sum rules technique in the chiral limit. The obtained result Δmπ=4.4±1.1 MeV is in reasonable agreement with the experimental value (Δmπ)exp=4.43±0.03 MeV. The developed technique can be also applied to the determination of the electromagnetic mass difference of K mesons.

Asymptotic SU(5) symmetry and spectral-function sum rules

1979 ◽  
Vol 5 (7) ◽  
pp. 885-891 ◽  
Author(s):  
V P Gautam ◽  
B Bagchi
Keyword(s):  
Spectral Function ◽  
Sum Rules
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