Coarse-grained binning in Drell-Yan transverse momentum spectra
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866908358738444288 |
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| author | Zhan, Wenxiao Yang, Siqi Liu, Minghui Hautmann, Francesco Han, Liang |
| author_facet | Zhan, Wenxiao Yang, Siqi Liu, Minghui Hautmann, Francesco Han, Liang |
| contents | We report a study of the determination of the intrinsic transverse momentum of partons, the intrinsic $k_T$, from the dilepton transverse momentum $p_T$ in Drell-Yan (DY) production at hadron colliders. The result shows that a good sensitivity to the intrinsic $k_T$ distribution is achieved by measuring relative ratios between the cross sections of suitably defined low-$p_T$ and high-$p_T$ regions. The study is performed through both a pseudo-data test and an extraction from measurements of the DY process by the CMS collaboration. Since the methodology does not rely on any dedicated partition of bins, this $p_T$-ratio observable requires less special treatment in very low $p_T$ regions, and propagates lower systematic uncertainties induced from unfolding or momentum migration, in contrast with previous proposals of using a fine-binning measurement of the differential cross section. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_19060 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coarse-grained binning in Drell-Yan transverse momentum spectra Zhan, Wenxiao Yang, Siqi Liu, Minghui Hautmann, Francesco Han, Liang High Energy Physics - Phenomenology We report a study of the determination of the intrinsic transverse momentum of partons, the intrinsic $k_T$, from the dilepton transverse momentum $p_T$ in Drell-Yan (DY) production at hadron colliders. The result shows that a good sensitivity to the intrinsic $k_T$ distribution is achieved by measuring relative ratios between the cross sections of suitably defined low-$p_T$ and high-$p_T$ regions. The study is performed through both a pseudo-data test and an extraction from measurements of the DY process by the CMS collaboration. Since the methodology does not rely on any dedicated partition of bins, this $p_T$-ratio observable requires less special treatment in very low $p_T$ regions, and propagates lower systematic uncertainties induced from unfolding or momentum migration, in contrast with previous proposals of using a fine-binning measurement of the differential cross section. |
| title | Coarse-grained binning in Drell-Yan transverse momentum spectra |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2412.19060 |