Observing the odderon: tensor meson photoproduction

Observing the odderon: tensor meson photoproduction

We calculate high-energy photoproduction of the tensor meson \(f_2(1270)\) by odderon and photon exchange in the reaction \(\gamma +{\rm{p}} \rightarrow f_2(1270) +{\rm{X}}\), where X is either the nucleon or the sum of the N(1520) and N(1535) baryon resonances. Odderon exchange dominates except at...

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Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 2000-06, Vol.14 (4), p.673-682
Hauptverfasser: Berger, E.R., Donnachie, A., Dosch, H.G., Nachtmann, O.
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Sprache:eng
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Baryon resonance
Cross-sections
Exchanging
Mathematical analysis
Nucleons
Photoproduction
Tensors
Transverse momentum
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creator Berger, E.R.
Donnachie, A.
Dosch, H.G.
Nachtmann, O.
description We calculate high-energy photoproduction of the tensor meson \(f_2(1270)\) by odderon and photon exchange in the reaction \(\gamma +{\rm{p}} \rightarrow f_2(1270) +{\rm{X}}\), where X is either the nucleon or the sum of the N(1520) and N(1535) baryon resonances. Odderon exchange dominates except at very small transverse momentum, and we find a cross section of about 20 nb at a centre-of-mass energy of 20 GeV. This result is compared with what is currently known experimentally about \(f_2\) photoproduction. We conclude that odderon exchange is not ruled out by present data. On the contrary, an odderon-induced cross section of the above magnitude may help to explain a puzzling result observed by the E687 experiment.
doi_str_mv 10.1007/s100520000377
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subjects Baryon resonance
Cross-sections
Exchanging
Mathematical analysis
Nucleons
Photoproduction
Tensors
Transverse momentum
title Observing the odderon: tensor meson photoproduction
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