STI Publications - View Publication Form #21423
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Publication Information
Title | High precision measurements of as 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 Wenliang, Dien Nguyen, Michael Nycz, Xiaochao Zheng | ||||
Publication Date | October 2024 | ||||
Document Type | Journal Article | ||||
Primary Institution | Massachusetts Institute of Technology, Cambridge, MA | ||||
Affiliation | Exp Nuclear Physics / Experimental Halls / Hall D | ||||
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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