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| Format: | Preprint |
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2024
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| Online-Zugang: | https://arxiv.org/abs/2412.15234 |
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| _version_ | 1866912162525478912 |
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| author | Garrido, José Roa, Michael Guevara, Miguel |
| author_facet | Garrido, José Roa, Michael Guevara, Miguel |
| contents | In this talk, we present the CGC/saturation approach of Ref.[C.~Contreras, E.~Levin, R.~Meneses and M.~Sanhueza,Eur. Phys. J. C 80 (2020) no.11, 1029] and its parameters determined from the combined HERA data. This model features an analytical solution for the non-linear Balitsky-Kovchegov (BK) evolution equation and the exponential behavior of the saturation momentum on the impact parameter $b$-dependence, characterized by $Q_s\propto \exp(-mb)$. We compare our results with experimental data at small-$x$, including the proton structure function $F_2$, charm structure function $F_2^{c\bar{c}}$, and exclusive vector meson production. The model shows good agreement across a wide kinematic range. Our findings support using this approach for reliable predictions in upcoming experiments like the Electron-Ion Collider (EIC) and the LHeC. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_15234 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Confronting impact-parameter dependent model in next-to-leading order of perturbative QCD with combined HERA data Garrido, José Roa, Michael Guevara, Miguel High Energy Physics - Phenomenology In this talk, we present the CGC/saturation approach of Ref.[C.~Contreras, E.~Levin, R.~Meneses and M.~Sanhueza,Eur. Phys. J. C 80 (2020) no.11, 1029] and its parameters determined from the combined HERA data. This model features an analytical solution for the non-linear Balitsky-Kovchegov (BK) evolution equation and the exponential behavior of the saturation momentum on the impact parameter $b$-dependence, characterized by $Q_s\propto \exp(-mb)$. We compare our results with experimental data at small-$x$, including the proton structure function $F_2$, charm structure function $F_2^{c\bar{c}}$, and exclusive vector meson production. The model shows good agreement across a wide kinematic range. Our findings support using this approach for reliable predictions in upcoming experiments like the Electron-Ion Collider (EIC) and the LHeC. |
| title | Confronting impact-parameter dependent model in next-to-leading order of perturbative QCD with combined HERA data |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2412.15234 |