Gluon saturation effects in exclusive heavy vector meson photoproduction
We study exclusive J/ψ and ϒ photoproduction for proton and Pb targets in the high-energy limit, with the energy dependence computed using the linear Balitsky–Fadin–Kuraev–Lipatov and the nonlinear Balitsky–Kovchegov evolution equations. The difference between these two evolution equations can be di...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325001546 |
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| author | Jani Penttala Christophe Royon |
| author_facet | Jani Penttala Christophe Royon |
| author_sort | Jani Penttala |
| collection | DOAJ |
| description | We study exclusive J/ψ and ϒ photoproduction for proton and Pb targets in the high-energy limit, with the energy dependence computed using the linear Balitsky–Fadin–Kuraev–Lipatov and the nonlinear Balitsky–Kovchegov evolution equations. The difference between these two evolution equations can be directly attributed to gluon saturation physics. We find that for proton targets there is no difference between the two approaches at the energies of the currently available data, while for Pb targets in J/ψ production the data shows a clear preference for the evolution with gluon saturation. |
| format | Article |
| id | doaj-art-d842ffc1dd6a4dff8bce464777f64915 |
| institution | OA Journals |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-d842ffc1dd6a4dff8bce464777f649152025-08-20T02:17:26ZengElsevierPhysics Letters B0370-26932025-05-0186413939410.1016/j.physletb.2025.139394Gluon saturation effects in exclusive heavy vector meson photoproductionJani Penttala0Christophe Royon1Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA; Mani L. Bhaumik Institute for Theoretical Physics, University of California, Los Angeles, CA 90095, USA; Corresponding author.Department of Physics and Astronomy, The University of Kansas, Lawrence KS 66045, USAWe study exclusive J/ψ and ϒ photoproduction for proton and Pb targets in the high-energy limit, with the energy dependence computed using the linear Balitsky–Fadin–Kuraev–Lipatov and the nonlinear Balitsky–Kovchegov evolution equations. The difference between these two evolution equations can be directly attributed to gluon saturation physics. We find that for proton targets there is no difference between the two approaches at the energies of the currently available data, while for Pb targets in J/ψ production the data shows a clear preference for the evolution with gluon saturation.http://www.sciencedirect.com/science/article/pii/S0370269325001546 |
| spellingShingle | Jani Penttala Christophe Royon Gluon saturation effects in exclusive heavy vector meson photoproduction Physics Letters B |
| title | Gluon saturation effects in exclusive heavy vector meson photoproduction |
| title_full | Gluon saturation effects in exclusive heavy vector meson photoproduction |
| title_fullStr | Gluon saturation effects in exclusive heavy vector meson photoproduction |
| title_full_unstemmed | Gluon saturation effects in exclusive heavy vector meson photoproduction |
| title_short | Gluon saturation effects in exclusive heavy vector meson photoproduction |
| title_sort | gluon saturation effects in exclusive heavy vector meson photoproduction |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325001546 |
| work_keys_str_mv | AT janipenttala gluonsaturationeffectsinexclusiveheavyvectormesonphotoproduction AT christopheroyon gluonsaturationeffectsinexclusiveheavyvectormesonphotoproduction |