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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.17564 |
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| _version_ | 1866909982539120640 |
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| author | SeaQuest Collaboration Leung, C. H. Dove, J. Nagai, K. Nakano, K. Prasad, S. Tadepalli, A. S. Aidala, C. A. Arrington, J. Ayuso, C. Barker, C. L. Chang, W. C. Chen, A. Christian, D. C. Dannowitz, B. P. Fassi, L. El Geesaman, D. F. Gilman, R. Goto, Y. Guo, R. S. Guo, L. Hague, T. J. Holt, R. J. Hossain, M. F. Isenhower, L. D. Kinney, E. R. Klein, A. Kleinjan, D. Lin, P. -J. Liu, K. Liu, M. X. Lorenzon, W. McClellan, R. E. McGaughey, P. L. Medeiros, M. M. Miyachi, Y. Miyasaka, S. Morton, D. H. Nakahara, K. Peng, J. C. Puckett, A. J. R. Pun, A. Ramson, B. J. Reimer, P. E. Rubin, J. G. Sanftl, F. Sawada, S. Sawada, T. Scott, M. B. C. Shibata, T. -A. Su, D. -S. Teo, M. Towell, R. Uemura, S. Wang, S. G. Wu, J. Wuerfel, N. Ye, Z. H. |
| author_facet | SeaQuest Collaboration Leung, C. H. Dove, J. Nagai, K. Nakano, K. Prasad, S. Tadepalli, A. S. Aidala, C. A. Arrington, J. Ayuso, C. Barker, C. L. Chang, W. C. Chen, A. Christian, D. C. Dannowitz, B. P. Fassi, L. El Geesaman, D. F. Gilman, R. Goto, Y. Guo, R. S. Guo, L. Hague, T. J. Holt, R. J. Hossain, M. F. Isenhower, L. D. Kinney, E. R. Klein, A. Kleinjan, D. Lin, P. -J. Liu, K. Liu, M. X. Lorenzon, W. McClellan, R. E. McGaughey, P. L. Medeiros, M. M. Miyachi, Y. Miyasaka, S. Morton, D. H. Nakahara, K. Peng, J. C. Puckett, A. J. R. Pun, A. Ramson, B. J. Reimer, P. E. Rubin, J. G. Sanftl, F. Sawada, S. Sawada, T. Scott, M. B. C. Shibata, T. -A. Su, D. -S. Teo, M. Towell, R. Uemura, S. Wang, S. G. Wu, J. Wuerfel, N. Ye, Z. H. |
| contents | The Fermilab E906/SeaQuest collaboration performed measurements of the Drell-Yan process using 120 GeV proton beams bombarding liquid hydrogen and liquid deuterium targets. A combined analysis of all collected data was performed to obtain the final results for the $σ_{pd}/2σ_{pp}$ Drell-Yan cross section ratio covering the kinematic region of $0.13 < x < 0.45$. The $x$-dependencies of $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ and $\bar{d}\left(x\right) - \bar{u}\left(x\right)$ are extracted from these cross section ratios. It is found that $\bar{d}\left(x\right)$ is greater than $\bar{u}\left(x\right)$ over the entire measured $x$ range, with improved statistical accuracy compared to previous measurements. The new results on $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ and $\bar{d}\left(x\right) - \bar{u}\left(x\right)$ are compared to various parton distribution functions and theoretical calculations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_17564 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Final SeaQuest results on the flavor asymmetry of the proton light-quark sea with proton-induced Drell-Yan process SeaQuest Collaboration Leung, C. H. Dove, J. Nagai, K. Nakano, K. Prasad, S. Tadepalli, A. S. Aidala, C. A. Arrington, J. Ayuso, C. Barker, C. L. Chang, W. C. Chen, A. Christian, D. C. Dannowitz, B. P. Fassi, L. El Geesaman, D. F. Gilman, R. Goto, Y. Guo, R. S. Guo, L. Hague, T. J. Holt, R. J. Hossain, M. F. Isenhower, L. D. Kinney, E. R. Klein, A. Kleinjan, D. Lin, P. -J. Liu, K. Liu, M. X. Lorenzon, W. McClellan, R. E. McGaughey, P. L. Medeiros, M. M. Miyachi, Y. Miyasaka, S. Morton, D. H. Nakahara, K. Peng, J. C. Puckett, A. J. R. Pun, A. Ramson, B. J. Reimer, P. E. Rubin, J. G. Sanftl, F. Sawada, S. Sawada, T. Scott, M. B. C. Shibata, T. -A. Su, D. -S. Teo, M. Towell, R. Uemura, S. Wang, S. G. Wu, J. Wuerfel, N. Ye, Z. H. High Energy Physics - Experiment Nuclear Experiment The Fermilab E906/SeaQuest collaboration performed measurements of the Drell-Yan process using 120 GeV proton beams bombarding liquid hydrogen and liquid deuterium targets. A combined analysis of all collected data was performed to obtain the final results for the $σ_{pd}/2σ_{pp}$ Drell-Yan cross section ratio covering the kinematic region of $0.13 < x < 0.45$. The $x$-dependencies of $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ and $\bar{d}\left(x\right) - \bar{u}\left(x\right)$ are extracted from these cross section ratios. It is found that $\bar{d}\left(x\right)$ is greater than $\bar{u}\left(x\right)$ over the entire measured $x$ range, with improved statistical accuracy compared to previous measurements. The new results on $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ and $\bar{d}\left(x\right) - \bar{u}\left(x\right)$ are compared to various parton distribution functions and theoretical calculations. |
| title | Final SeaQuest results on the flavor asymmetry of the proton light-quark sea with proton-induced Drell-Yan process |
| topic | High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2512.17564 |