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

  • 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 fρππ(p2) (up to O(p)), from which an important non-perturbative conclusion is drawn from convergence and unitarity consideration.
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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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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

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 fρππ(p2) (up to O(p)), from which an important non-perturbative conclusion is drawn from convergence and unitarity consideration.

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