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Khuri-Treiman equations for ππ scattering
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DOI：10.1140/epjc/s10052-018-6045-0.png)
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摘要
En 中文
The Khuri-Treiman formalism models the partial-wave expansion of a scattering amplitude as a sum of three individual truncated series, capturing the low-energy dynamics of the direct and cross channels. We cast this formalism into dispersive equations to study pi pi scattering, and compare their expressions and numerical output to the Roy and GKPY equations. We prove that the Khuri-Treiman equations and Roy equations coincide when both are truncated to include only S-and P-waves. When higher partial waves are included, we find an excellent agreement between the Khuri-Treiman and the GKPY results. This lends credence to the notion that the Khuri-Treiman formalism is a reliable low-energy tool for studying hadronic reaction amplitudes.
Keyword:
AXIOMATIC ANALYTICITY DOMAIN
FINAL-STATE INTERACTION
PERTURBATION-THEORY
3-BODY DECAY
AMPLITUDES
UNITARITY
EXTENSION
REGION
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期刊
IF:
4.8
论文数:
1.8W
被引数:
4.7W
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分享收藏Consistent Dalitz plot analysis of Cabibbo-favored D+ → (K)over-barππ+ decays.png)
PHYSICS LETTERS BOAAI
PHYSICS LETTERS BIF4.5
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