STI Publications - View Publication Form #21423
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Publication Information
| Title | High precision measurements of alpha s at the future EIC | ||||
| Abstract | We present a projection study for the first moments of the inclusive spin structure function $\int g_1(x,Q^2) \, dx$ for the proton and neutron from simulated doubly-polarized $\vec{e}\vec{p}$ and $\vec{e}$-$^3 \overrightarrow{\rm He}$ collision data expected from the Electron-Ion collider. For detection and extraction of the neutron spin asymmetries from $\vec{e}$-$^3 \overrightarrow{\rm He}$ collisions, we used the double-tagging method which significantly reduces the uncertainty over the traditional inclusive method. Using the Bjorken sum rule, the projected results allow us to determine that the QCD coupling at the $Z$-pole $\alpha_s(M_{Z^0}^2)$ can be measured with a relative precision of $1.3\%$. This underscores the significance of the EIC for achieving precision determinations of $\alpha_s$. | ||||
| Author(s) | Tyler Kutz, Jackson Pybus  , Darren Upton , Cameron Cotton, Abhay Deshpande, Alexandre Deur, Bill Li , Dien Nguyen, Michael Nycz, Xiaochao Zheng |
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| Publication Date | October 2024 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Massachusetts Institute of Technology, Cambridge, MA | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Physics EIC | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | Yes | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review D |
| Refereed | Yes |
| Volume | 110 |
| Issue | |
| Page(s) | 074004 |
Attachments/Datasets/DOI Link
| Document(s) |
alpha_s_Bjorken_sum_rule.pdf
(STI Document)
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| DOI Link | |
| Dataset(s) | (none) |
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