دورية أكاديمية
Experimental Study of the Behavior of the Bjorken Sum at Very Low Q²
| العنوان: | Experimental Study of the Behavior of the Bjorken Sum at Very Low Q² |
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| المؤلفون: | Deur, A., Chen, J. P., Kuhn, S. E., Peng, C., Ripani, M., Sulkosky, V., Adhikari, K., Battaglieri, M., Burkert, V. D., Cates, G. D., De Vita, R., Dodge, G.E., Fassi, L. El, Garibaldi, F., Kang, H., Osipenko, M., Singh, J. T., Slifer, K., Zhang, J., Zheng, X. |
| المصدر: | Physics Faculty Publications |
| بيانات النشر: | ODU Digital Commons |
| سنة النشر: | 2022 |
| المجموعة: | Old Dominion University: ODU Digital Commons |
| مصطلحات موضوعية: | EG4, Polarized protons, E97100 Polarized ³He, Δ(1232) resonance, Bjorken sum rule, QCD running coupling 𝜶g₁, Elementary Particles and Fields and String Theory, Physics, Quantum Physics |
| الوصف: | We present new data on the Bjorken sum -Γ p-n1 (Q2) at 4-momentum transfer 0.021 ≤ Q2 ≤ 0.496 GeV2. The data were obtained in two experiments performed at Jefferson Lab: EG4 on polarized protons and deuterons, and E97110 on polarized 3He from which neutron data were extracted. The data cover the domain where chiral effective field theory (χEFT), the leading effective theory of the Strong Force at large distances, is expected to be applicable. We find that our data and the predictions from χEFT are only in marginal agreement. This is somewhat surprising as the contribution from the Δ(1232) resonance is suppressed in this observable, which should make it more reliably predicted by χEFT than quantities in which the Δ contribution is important. The data are also compared to a number of phenomenological models with various degrees of agreement. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| العلاقة: | https://digitalcommons.odu.edu/physics_fac_pubs/567Test; https://digitalcommons.odu.edu/context/physics_fac_pubs/article/1568/viewcontent/Kuhn_2022_ExperimentalStudyoftheBehavioroftheBjorkenOCR.pdfTest |
| DOI: | 10.1016/j.physletb.2022.136878 |
| الإتاحة: | https://doi.org/10.1016/j.physletb.2022.136878Test https://digitalcommons.odu.edu/physics_fac_pubs/567Test https://digitalcommons.odu.edu/context/physics_fac_pubs/article/1568/viewcontent/Kuhn_2022_ExperimentalStudyoftheBehavioroftheBjorkenOCR.pdfTest |
| رقم الانضمام: | edsbas.3373B1C2 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.physletb.2022.136878 |
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