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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

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 ≤ 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.

Original language	English
Article number	041401
Journal	Chinese Physics Letters
Volume	39
Issue number	4
DOIs	https://doi.org/10.1088/0256-307X/39/4/041401
Publication status	Published - Apr 2022
Externally published	Yes

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title = "Valence Quark Ratio in the Proton",

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.",

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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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Valence Quark Ratio in the Proton

Abstract

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