Comprehensive Insight into Regular Damped Oscillatory Structures from Effective Electromagnetic Form Factor Data of Some Mesons and Nucleons

被引：0
作者：
Bartos, Erik [1 ]
Dubnicka, Stanislav [1 ]
Dubnickova, Anna Zuzana [2 ]
Holka, Lukas [1 ]
Liptaj, Andrej [1 ]
机构：
[1] Slovak Acad Sci, Inst Phys, Dubravska Cesta 9, SK-84511 Bratislava, Slovakia
[2] Comenius Univ, Dept Theoret Phys, SK-84248 Bratislava, Slovakia
来源：
DYNAMICS | 2024年 / 4卷 / 04期
关键词：
protons; neutrons; vector mesons; electromagnetic form factors; cross-sections; analyticity; ENERGY-RANGE; E(+)E(-); SEARCH;
D O I：
10.3390/dynamics4040041
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Regular damped oscillatory structures from the "effective" electromagnetic form factors of the hadrons h=pi +/-,K +/-,K0,p,n were investigated. The "effective" electromagnetic form factor behaviors were calculated from the experimental data on the total cross-sections sigma tot(e+e--> hh<overline>) with errors. The apparent oscillations were observed for the first time for the proton, and we show, also taking other hadrons into consideration, that they are an arbitrary artifact resulting from a very simplistic theoretical description based on an elementary three-parameter model. If the data are described by a more appropriate and physically well-founded Unitary and Analytic model, then the oscillations disappear. In spite of this, if the three-parameter model is used to describe the "effective" electromagnetic form factor data, an interesting phenomenon is observed. The oscillations are opposite for particles which form an isospin doublet. By using the physically well-founded Unitary and Analytic model, it is demonstrated that this feature originates from the special transformation properties of the electromagnetic current of the corresponding particles in the isotopic space.
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收藏
页码：804 / 829
页数：26
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