Resummation Study on Decay ρ→ππ in U(2)<SUB>L</SUB>×U(2)<SUB>R</SUB> Chiral Theory of Mesons

HUANG Yi-Bin; YAN Mu-Lin; WANG Xiao-Jun

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2004, Vol. 28> Issue(4) : 340-344

Resummation Study on Decay ρ→ππ in U(2)_L×U(2)_R Chiral Theory of Mesons

Interdisciplinary Center for Theoretical Study,University of Science and Technology of China,Hefei 230026,China2 CCST World Lab,Beijing 100080,China3 Institute of Theoretical Physics,CAS,Beijing 100080,China

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Abstract：
We improve O(p⁴) calculation in U(2)_L×U(2)_R chiral theory of mesons by resummation calculation for vector mesons physics and restudy decay ρ→ππ. We obtain a complete and compact expression for f_ρππ(p²) (up to O(p^∞)), from which an important non-perturbative conclusion is drawn from convergence and unitarity consideration.

References

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HUANG Yi-Bin, YAN Mu-Lin and WANG Xiao-Jun. Resummation Study on Decay ρ→ππ in U(2)_L×U(2)_R Chiral Theory of Mesons[J]. Chinese Physics C, 2004, 28(4): 340-344.

HUANG Yi-Bin, YAN Mu-Lin and WANG Xiao-Jun. Resummation Study on Decay ρ→ππ in U(2)_L×U(2)_R Chiral Theory of Mesons[J]. Chinese Physics C, 2004, 28(4): 340-344. shu

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Received: 2003-07-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Resummation Study on Decay ρ→ππ in U(2)_L×U(2)_R Chiral Theory of Mesons

Corresponding author: HUANG Yi-Bin,

Interdisciplinary Center for Theoretical Study,University of Science and Technology of China,Hefei 230026,China2 CCST World Lab,Beijing 100080,China3 Institute of Theoretical Physics,CAS,Beijing 100080,China

Received Date: 2003-07-01
Accepted Date: 1900-01-01
Available Online: 2004-04-05

Abstract: We improve O(p⁴) calculation in U(2)_L×U(2)_R chiral theory of mesons by resummation calculation for vector mesons physics and restudy decay ρ→ππ. We obtain a complete and compact expression for f_ρππ(p²) (up to O(p^∞)), from which an important non-perturbative conclusion is drawn from convergence and unitarity consideration.