Central exclusive production of $η$ and $η'$ mesons in diffractive proton-proton collisions at the LHC and the nature of the pomeron
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| Format: | Preprint |
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2026
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| _version_ | 1866910024345845760 |
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| author | Lebiedowicz, Piotr Nachtmann, Otto Szczurek, Antoni |
| author_facet | Lebiedowicz, Piotr Nachtmann, Otto Szczurek, Antoni |
| contents | Central exclusive production (CEP) of $η$ and $η'$ mesons in proton-proton collisions at high-energies is discussed. At the LHC the main mechanism for the production of these mesons should be double-pomeron ($\rm I\!P$-$\rm I\!P$) exchange, that is, the fusion reactions ${\rm I\!P I\!P} \to η, η'$. We show that for a scalar pomeron these fusion reactions are not possible. In contrast, in the tensor-pomeron model CEP of $η$ and $η'$ mesons via double-pomeron exchange is allowed. We discuss these reactions for the c.m. energy $\sqrt{s} = 29.1$ GeV realised at the WA102 experiment and for $\sqrt{s} = 13$ TeV corresponding to the LHC experiments. Cross sections and distributions are presented and discussed. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2601_14870 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Central exclusive production of $η$ and $η'$ mesons in diffractive proton-proton collisions at the LHC and the nature of the pomeron Lebiedowicz, Piotr Nachtmann, Otto Szczurek, Antoni High Energy Physics - Phenomenology Central exclusive production (CEP) of $η$ and $η'$ mesons in proton-proton collisions at high-energies is discussed. At the LHC the main mechanism for the production of these mesons should be double-pomeron ($\rm I\!P$-$\rm I\!P$) exchange, that is, the fusion reactions ${\rm I\!P I\!P} \to η, η'$. We show that for a scalar pomeron these fusion reactions are not possible. In contrast, in the tensor-pomeron model CEP of $η$ and $η'$ mesons via double-pomeron exchange is allowed. We discuss these reactions for the c.m. energy $\sqrt{s} = 29.1$ GeV realised at the WA102 experiment and for $\sqrt{s} = 13$ TeV corresponding to the LHC experiments. Cross sections and distributions are presented and discussed. |
| title | Central exclusive production of $η$ and $η'$ mesons in diffractive proton-proton collisions at the LHC and the nature of the pomeron |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2601.14870 |