Abstract
The interference between the Pomeron and possible odderon mechanisms of diffractive π+π− photoproduction results in charge asymmetry of the produced pions. The observation of charge asymmetry of pions at moderate Mπ+π− will be an undoubted signal of odderon existence. To make numeral estimates more definite, we limit ourselves by the region Mπ+π− = 1.1 ÷ 1.5 GeV, where in the odderon mechanism of dipion production, the production via single f2(1270) resonance is expected to be dominant. We find a very statistically significant effect of the odderon induced charge asymmetry even with very modest estimates for the f2 photoproduction cross section (without referring to any particular model of the odderon).
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Ginzburg, I.F., Ivanov, I.P. & Nikolaev, N.N. Possibility of the odderon discovery via observation of charge asymmetry in the diffractive π+π− production at HERA. EPJ direct 1, 1–18 (2003). https://doi.org/10.1140/epjcd/s2003-01-002-8
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DOI: https://doi.org/10.1140/epjcd/s2003-01-002-8