BrokenSU 5 ×SU 5 chiral symmetry and heavy pseudoscalar mesons

1980 ◽  
Vol 29 (7) ◽  
pp. 207-213 ◽  
Author(s):  
S. Fajfer ◽  
Z. Stipčević
Keyword(s):  
Chiral Symmetry ◽  
Pseudoscalar Mesons

Breaking of Chiral Symmetry for Pseudoscalar Mesons

1969 ◽  
Vol 183 (5) ◽  
pp. 1463-1468 ◽  
Author(s):  
P. R. Auvil ◽  
N. G. Deshpande
Keyword(s):  
Chiral Symmetry ◽  
Pseudoscalar Mesons

SU 4×SU4 Chiral symmetry for pseudoscalar mesons

1977 ◽  
Vol 39 (4) ◽  
pp. 554-569 ◽  
Author(s):  
G. J. Gounaris ◽  
S. B. Sarantakos
Keyword(s):  
Chiral Symmetry ◽  
Pseudoscalar Mesons

scholarly journals UA(1) SYMMETRY BREAKING AND THE SCALAR SECTOR OF QCD

2001 ◽  
Vol 16 (17) ◽  
pp. 3011-3024 ◽  
Author(s):  
M. NAPSUCIALE ◽  
S. RODRIGUEZ
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Vacuum Expectation ◽  
Spontaneous Breaking ◽  
Expectation Values ◽  
Qualitative And Quantitative ◽  
Quantitative Level ◽  
Pseudoscalar Mesons ◽  
Scalar Sector

It is shown that most of the unusual properties of the lowest lying scalar (and pseudoscalar) mesons can be understood, at the qualitative and quantitative level, on the basis of the breakdown of the UA(1) symmetry coupled to the vacuum expectation values of scalars by the spontaneous breaking of chiral symmetry.

Broken chiral symmetry and the classification of B mesons

1984 ◽  
Vol 62 (5) ◽  
pp. 520-526 ◽  
Author(s):  
M. Hatzis
Keyword(s):  
Mass Spectrum ◽  
Chiral Symmetry ◽  
B Mesons ◽  
Axial Current ◽  
Pseudoscalar Mesons ◽  
The Masses

We consider broken SU(5) × SU(5) chiral symmetry and we assume that the vacuum is SU(5)-symmetric. Using the observed mass spectrum of pseudoscalar mesons, and setting the [Formula: see text] mass in the range 5.2 ± 0.06 GeV, we predict the masses of [Formula: see text], [Formula: see text], and ηb states as well as axial current couplings fi/fπ. SU(5) × SU(5) is found to be consistent with SU(4) × SU(4) breaking. The problem of η − η′ − ηe − ηb mixing is also discussed.

scholarly journals QUARK MASS RATIOS AND MASS SPLIT OF π0-π±INChPTWITH THE DIFFERENCE OF QUARK CONDENSATES CONSIDERED

2008 ◽  
Vol 23 (22) ◽  
pp. 3493-3507
Author(s):  
XIAOYA LI ◽  
BIN WANG ◽  
XIAOZHAO CHEN ◽  
XIAOFU LÜ
Keyword(s):  
Chiral Symmetry ◽  
Pseudoscalar Meson ◽  
Quark Mass ◽  
Quark Condensate ◽  
Breaking Effect ◽  
Goldstone Bosons ◽  
Effective Lagrangian ◽  
Pseudoscalar Mesons ◽  
Mass Ratios ◽  
The Difference

The chiral effective Lagrangian for pseudoscalar meson nonet including eight Goldstone bosons and a SU (3) singlet η0is constructed with the breaking effect of chiral symmetry in both quark condensate and quark mass differences taken into account. The [Formula: see text] mixing is discussed. By solving the mass equations of pseudoscalar mesons, the quark mass ratios are obtained and the quark condensate ratios are constrained in ranges. The mass split of π0-π±is discussed.

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