Measurement of the helicity asymmetry e in ω→π+πˉπo photoproduction
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منابع مشابه
odderon discovery via observation of charge asymmetry in the diffractive π + π − production at HERA
The interference between the Pomeron and possible odderon mechanisms of diffractive π+π− photoproduction results in charge asymmetry of the produced pions. Without referring to any particular model of the odderon, we establish how the kind of charge asymmetry depends on the helicity structure of Pomeron and odderon mediated production of dipions. Focusing on region Mπ+π− = 1.1 ÷ 1.5 GeV, where ...
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Associative photoproduction of ω-meson and N∗(1440) on nucleons, γ + N → ω + N∗(1440), in the near threshold region is investigated in a framework employing effective Lagrangians. Besides π-exchange in t-channel, baryon exchanges, i.e. Nand N∗-exchanges, in the sand u-channels are also taken into account in calculations of differential cross-section and beam asymmetry. Important inputs of this ...
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Abstract. The study of the properties of baryon resonances can provide us with hints to help us understand the structure of non-perturbative QCD and the effect of a particular resonance on polarization observables. The investigation of double-pion photoproduction data is needed to discover higher-lying states and their properties at and above W ≈ 1.8 GeV. Therefore, the analysis of the helicity...
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تاریخ انتشار 2018