A=3(e, e') xB ≥1 cross-section ratios and the isospin structure of short-range correlations

被引：0

作者：

Schmidt, A. ^{[1
]}

Denniston, A. W. ^{[2
]}

Seroka, E. M. ^{[1
]}

Barnea, N. ^{[3
]}

Higinbotham, D. W. ^{[4
]}

Korover, I. ^{[2
]}

Miller, G. A. ^{[5
]}

Piasetzky, E. ^{[6
]}

Strikman, M. ^{[7
]}

Weinstein, L. B. ^{[8
]}

Weiss, R. ^{[9
]}

Hen, O. ^{[2
]}

机构：

[1] George Washington Univ, Washington, DC 20052 USA

[2] Massachusetts Inst Technol CSAIL MIT, Cambridge, MA 02139 USA

[3] Hebrew Univ Jerusalem, Racah Inst Phys, IL-9190401 Jerusalem, Israel

[4] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA

[5] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[6] Tel Aviv Univ, Tel Aviv, Israel

[7] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[8] Old Dominion Univ, Norfolk, VA 23529 USA

[9] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW C | 2024年 / 109卷 / 05期

关键词：

SCATTERING; ELECTRON; NUCLEI; ENERGY;

D O I：

10.1103/PhysRevC.109.054001

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study the relation between measured high-xB, high-Q2, helium-3 to tritium, (e, e') inclusive-scattering cross-section ratios and the relative abundance of high-momentum neutron-proton (np) and proton-proton (pp) short-range correlated nucleon pairs in three-body (A = 3) nuclei. Analysis of these data using a simple paircounting cross-section model suggested a much smaller np/pp ratio than previously measured in heavier nuclei, questioning our understanding of A = 3 nuclei and, by extension, all other nuclei. Here, we examine this finding using spectral-function-based cross-section calculations, with both an ab initio A = 3 spectral function and effective generalized contact formalism spectral functions using different nucleon-nucleon interaction models. The ab initio calculation agrees with the data, showing good understanding of the structure of A = 3 nuclei. An 8% uncertainty on the simple pair-counting model, as implied by the difference between it and the ab initio calculation, gives a factor of 5 uncertainty in the extracted np/pp ratio. Thus we see no evidence for the claimed "unexpected structure in the high-momentum wave function for hydrogen-3 and helium-3."

引用

页数：6

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