Valence Quark Ratio in the Proton

Zhu Fang Cui; Fei Gao; Daniele Binosi; Lei Chang; Craig D. Roberts; Sebastian M. Schmidt

doi:10.1088/0256-307X/39/4/041401

Valence Quark Ratio in the Proton

Zhu Fang Cui, Fei Gao, Daniele Binosi^*, Lei Chang^*, Craig D. Roberts^*, Sebastian M. Schmidt

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

24 引用（Scopus）

摘要

Beginning with precise data on the ratio of structure functions in deep inelastic scattering (DIS) from ³He and ³H, collected on the domain 0.19 ≤ x_B ≤ 0.83, where x_Bis the Bjorken scaling variable, we employ a robust method for extrapolating such data to arrive at a model-independent result for the x_B= 1 value of the ratio of neutron and proton structure functions. Combining this with information obtained in analyses of DIS from nuclei, corrected for target-structure dependence, we arrive at a prediction for the proton valence-quark ratio: d_v/u_v|x_{B →1}= 0.230(57). Requiring consistency with this result presents a challenge to many descriptions of proton structure.

源语言	英语
文章编号	041401
期刊	Chinese Physics Letters
卷	39
期	4
DOI	https://doi.org/10.1088/0256-307X/39/4/041401
出版状态	已出版 - 4月 2022
已对外发布	是

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Cui, Z. F., Gao, F., Binosi, D., Chang, L., Roberts, C. D., & Schmidt, S. M. (2022). Valence Quark Ratio in the Proton. Chinese Physics Letters, 39(4), 文章 041401. https://doi.org/10.1088/0256-307X/39/4/041401

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abstract = "Beginning with precise data on the ratio of structure functions in deep inelastic scattering (DIS) from 3He and 3H, collected on the domain 0.19 ≤ xB ≤ 0.83, where xBis the Bjorken scaling variable, we employ a robust method for extrapolating such data to arrive at a model-independent result for the xB= 1 value of the ratio of neutron and proton structure functions. Combining this with information obtained in analyses of DIS from nuclei, corrected for target-structure dependence, we arrive at a prediction for the proton valence-quark ratio: dv/uv|xB →1= 0.230(57). Requiring consistency with this result presents a challenge to many descriptions of proton structure.",

author = "Cui, {Zhu Fang} and Fei Gao and Daniele Binosi and Lei Chang and Roberts, {Craig D.} and Schmidt, {Sebastian M.}",

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doi = "10.1088/0256-307X/39/4/041401",

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T1 - Valence Quark Ratio in the Proton

AU - Cui, Zhu Fang

AU - Gao, Fei

AU - Binosi, Daniele

AU - Chang, Lei

AU - Roberts, Craig D.

AU - Schmidt, Sebastian M.

PY - 2022/4

Y1 - 2022/4

N2 - Beginning with precise data on the ratio of structure functions in deep inelastic scattering (DIS) from 3He and 3H, collected on the domain 0.19 ≤ xB ≤ 0.83, where xBis the Bjorken scaling variable, we employ a robust method for extrapolating such data to arrive at a model-independent result for the xB= 1 value of the ratio of neutron and proton structure functions. Combining this with information obtained in analyses of DIS from nuclei, corrected for target-structure dependence, we arrive at a prediction for the proton valence-quark ratio: dv/uv|xB →1= 0.230(57). Requiring consistency with this result presents a challenge to many descriptions of proton structure.

AB - Beginning with precise data on the ratio of structure functions in deep inelastic scattering (DIS) from 3He and 3H, collected on the domain 0.19 ≤ xB ≤ 0.83, where xBis the Bjorken scaling variable, we employ a robust method for extrapolating such data to arrive at a model-independent result for the xB= 1 value of the ratio of neutron and proton structure functions. Combining this with information obtained in analyses of DIS from nuclei, corrected for target-structure dependence, we arrive at a prediction for the proton valence-quark ratio: dv/uv|xB →1= 0.230(57). Requiring consistency with this result presents a challenge to many descriptions of proton structure.

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SN - 0256-307X

VL - 39

JO - Chinese Physics Letters

JF - Chinese Physics Letters

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ER -

Valence Quark Ratio in the Proton

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