Energy dependence of $J/ψ$ production in pp collisions with the PACIAE model
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866918159736373248 |
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| author | Ye, Kai-Fan Wang, Qiang Shi, Jia-Hao Qin, Zhi-Ying Zhang, Wen-Chao Lei, An-Ke She, Zhi-Lei Yan, Yu-Liang Sa, Ben-Hao |
| author_facet | Ye, Kai-Fan Wang, Qiang Shi, Jia-Hao Qin, Zhi-Ying Zhang, Wen-Chao Lei, An-Ke She, Zhi-Lei Yan, Yu-Liang Sa, Ben-Hao |
| contents | In this work we investigate the $J/ψ$ production in proton-proton collisions at the center-of-mass energy ($\sqrt{s}$) equal to 2.76, 5.02, 7, 8 and 13 TeV with a parton and hadron cascade model PACIAE 2.2a. It is based on PYTHIA but extended considering the partonic and hadronic rescatterings before and after hadronization, respectively. In the PYTHIA sector the $J/ψ$ production quantum chromodynamics processes are selected specially and a bias factor is proposed correspondingly. The calculated total cross sections, the differential cross sections as a function of the transverse momentum and the rapidity of $J/ψ$ in the forward rapidity region reproduce the corresponding experimental measurements reasonably well. In the mid-rapidity region, the double differential cross sections at $\sqrt{s}=$ 5.02, 7 and 13 TeV are also in a good agreement with the experimental data. Moreover, we interpolate the double differential cross section as well as the total cross section of $J/ψ$ in the mid-rapidity region at $\sqrt{s}=$ 8 TeV, which could be validated if the experimental data is available. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_12627 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Energy dependence of $J/ψ$ production in pp collisions with the PACIAE model Ye, Kai-Fan Wang, Qiang Shi, Jia-Hao Qin, Zhi-Ying Zhang, Wen-Chao Lei, An-Ke She, Zhi-Lei Yan, Yu-Liang Sa, Ben-Hao High Energy Physics - Phenomenology Nuclear Theory In this work we investigate the $J/ψ$ production in proton-proton collisions at the center-of-mass energy ($\sqrt{s}$) equal to 2.76, 5.02, 7, 8 and 13 TeV with a parton and hadron cascade model PACIAE 2.2a. It is based on PYTHIA but extended considering the partonic and hadronic rescatterings before and after hadronization, respectively. In the PYTHIA sector the $J/ψ$ production quantum chromodynamics processes are selected specially and a bias factor is proposed correspondingly. The calculated total cross sections, the differential cross sections as a function of the transverse momentum and the rapidity of $J/ψ$ in the forward rapidity region reproduce the corresponding experimental measurements reasonably well. In the mid-rapidity region, the double differential cross sections at $\sqrt{s}=$ 5.02, 7 and 13 TeV are also in a good agreement with the experimental data. Moreover, we interpolate the double differential cross section as well as the total cross section of $J/ψ$ in the mid-rapidity region at $\sqrt{s}=$ 8 TeV, which could be validated if the experimental data is available. |
| title | Energy dependence of $J/ψ$ production in pp collisions with the PACIAE model |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2310.12627 |