Charmonium suppression in fixed target proton-nucleus collisions
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| Main Authors: | , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914589393813504 |
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| author | Giri, Sourav Kanti Bhaduri, Partha Pratim Paul, Biswarup Das, Santosh K. |
| author_facet | Giri, Sourav Kanti Bhaduri, Partha Pratim Paul, Biswarup Das, Santosh K. |
| contents | In this article, we perform a systematic investigation of the cold nuclear matter (CNM) effects, operative on charmonium ($J/ψ$, $ψ(2S)$) production, in fixed target proton-nucleus (p+A) collisions. Influence on charmonium production cross section due to the interplay of three different plausible CNM effects namely the initial-state parton energy loss, nuclear shadowing, and final-state absorption of the resonant states, are evaluated in detail. The available data on charmonium production in fixed target p+A collision experiments from SPS, Fermilab and HERA-B are examined for this purpose. The beam energy dependence of the observed $J/ψ$ production patterns are utilized to anticipate level of "normal" absorption in the upcoming proton induced collisions by the NA60+ experiment at CERN SPS and the CBM experiment at FAIR SIS100 accelerator facilities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_19072 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Charmonium suppression in fixed target proton-nucleus collisions Giri, Sourav Kanti Bhaduri, Partha Pratim Paul, Biswarup Das, Santosh K. Nuclear Theory High Energy Physics - Phenomenology In this article, we perform a systematic investigation of the cold nuclear matter (CNM) effects, operative on charmonium ($J/ψ$, $ψ(2S)$) production, in fixed target proton-nucleus (p+A) collisions. Influence on charmonium production cross section due to the interplay of three different plausible CNM effects namely the initial-state parton energy loss, nuclear shadowing, and final-state absorption of the resonant states, are evaluated in detail. The available data on charmonium production in fixed target p+A collision experiments from SPS, Fermilab and HERA-B are examined for this purpose. The beam energy dependence of the observed $J/ψ$ production patterns are utilized to anticipate level of "normal" absorption in the upcoming proton induced collisions by the NA60+ experiment at CERN SPS and the CBM experiment at FAIR SIS100 accelerator facilities. |
| title | Charmonium suppression in fixed target proton-nucleus collisions |
| topic | Nuclear Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2602.19072 |