Extraction of the neutron F2 structure function from inclusive proton and deuteron deep-inelastic scattering data

被引：2

作者：

Li, S. ^{[1
,2
]}

Accardi, A. ^{[3
,4
]}

Cerutti, M. ^{[3
,4
]}

Fernando, I. P. ^{[5
]}

Keppel, C. E. ^{[4
]}

Melnitchouk, W. ^{[4
]}

Monaghan, P. ^{[6
]}

Niculescu, G. ^{[7
]}

Niculescu, M. I. ^{[7
]}

Owens, J. F. ^{[8
]}

机构：

[1] Univ New Hampshire, Durham, NH 03824 USA

[2] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[3] Hampton Univ, Hampton, VA 23668 USA

[4] Jefferson Lab, Newport News, VA 23606 USA

[5] Univ Virginia, Charlottesville, VA 22904 USA

[6] Christopher Newport Univ, Newport News, VA 23606 USA

[7] James Madison Univ, Harrisonburg, VA 22801 USA

[8] Florida State Univ, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW D | 2024年 / 109卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

HIGH STATISTICS MEASUREMENT; LIGHT-QUARK SEA; PARTON DISTRIBUTIONS; FLAVOR ASYMMETRY; CROSS-SECTIONS; SYMMETRY-BREAKING; MUON SCATTERING; GOTTFRIED SUM; QCD ANALYSIS; NUCLEON;

D O I：

10.1103/PhysRevD.109.074036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The available world deep-inelastic scattering (DIS) data on proton and deuteron structure functions F2p, F2d, and their ratios are leveraged to extract the free neutron Fn2 structure function, the F2n/Fp2 ratio, and associated uncertainties using the latest nuclear effect calculations in the deuteron. Special attention is devoted to the normalization of the proton and deuteron experimental datasets and to the treatment of correlated systematic errors, as well as the quantification of procedural and theoretical uncertainties. The extracted Fn2 dataset is utilized to evaluate the Q2 dependence of the Gottfried sum rule and the nonsinglet Fp2 - F2n moments. To facilitate replication of our study, as well as for general applications, we provide a comprehensive DIS database including all recent Jefferson Lab 6 GeV measurements, the extracted F2n, a modified CTEQ-JLab global parton distribution function fit named CJ15nlo_mod, and grids with calculated proton, neutron, and deuteron DIS structure functions.

引用

页数：24

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