“Pion decay constant”的意思、由来-开放百科全书

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Pion decay constant

释义

References
External links

In particle physics, the pion decay constant is the square root of the coefficient in front of the kinetic term for the pion in the low-energy effective action. It is dimensionally an energy scale and it determines the strength of the chiral symmetry breaking. The values are:

Beware: There are several conventions which differ by factors of . The textbook by Weinberg uses the value 184 MeV. The textbook by Peskin and Schroeder uses the value 93 MeV.

References

Particle Data Group: W.-M. Yao et al., J. Phys. G 33, 1 (2006).
{{cite book | author=Griffiths, David J. | title=Introduction to Elementary Particles | publisher=Wiley, John & Sons, Inc | year=1987 | isbn=978-0-471-60386-3}}
Particle Data Group: Decay constants of charged pseudoscalar mesons

External links

Particle Data Group & WWW edition of Review of Particle Physics

1 : Quantum chromodynamics

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