Revealing the short-range structure of the mirror nuclei 3H and 3He

被引：25

作者：

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

Cruz-Torres, R. ^{[2
,3
]}

Santiesteban, N. ^{[1
,3
]}

Ye, Z. H. ^{[4
,5
]}

Abrams, D. ^{[6
]}

Alsalmi, S. ^{[7
,8
]}

Androic, D. ^{[9
]}

Aniol, K. ^{[10
]}

Arrington, J. ^{[2
,5
]}

Averett, T. ^{[11
]}

Gayoso, C. Ayerbe ^{[11
]}

Bane, J. ^{[12
]}

Barcus, S. ^{[11
]}

Barrow, J. ^{[12
]}

Beck, A. ^{[3
]}

Bellini, V ^{[13
]}

Bhatt, H. ^{[14
]}

Bhetuwal, D. ^{[14
]}

Biswas, D. ^{[15
]}

Bulumulla, D. ^{[16
]}

Camsonne, A. ^{[17
]}

Castellanos, J. ^{[18
]}

Chen, J. ^{[11
]}

Chen, J-P ^{[17
]}

Chrisman, D. ^{[19
]}

Christy, M. E. ^{[15
,17
]}

Clarke, C. ^{[20
]}

Covrig, S. ^{[17
]}

Craycraft, K. ^{[12
]}

Day, D. ^{[6
]}

Dutta, D. ^{[14
]}

Fuchey, E. ^{[21
]}

Gal, C. ^{[6
]}

Garibaldi, F. ^{[22
]}

Gautam, T. N. ^{[15
]}

Gogami, T. ^{[23
]}

Gomez, J. ^{[17
]}

Gueye, P. ^{[15
,19
]}

Habarakada, A. ^{[15
]}

Hague, T. J. ^{[7
]}

Hansen, J. O. ^{[17
]}

Hauenstein, F. ^{[16
]}

Henry, W. ^{[24
]}

Higinbotham, D. W. ^{[17
]}

Holt, R. J. ^{[5
]}

Hyde, C. ^{[16
]}

Itabashi, T. ^{[23
]}

Kaneta, M. ^{[23
]}

Karki, A. ^{[14
]}

Katramatou, A. T. ^{[7
]}

机构：

[1] Univ New Hampshire, Dept Phys & Astron, Durham, NH 03824 USA

[2] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA

[3] MIT, Dept Phys, Cambridge, MA 02139 USA

[4] Tsinghua Univ, Beijing, Peoples R China

[5] Argonne Natl Lab, Phys Div, Lemont, IL 60439 USA

[6] Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA

[7] Kent State Univ, Kent, OH 44242 USA

[8] King Saud Univ, Riyadh, Saudi Arabia

[9] Univ Zagreb, Zagreb, Croatia

[10] Calif State Univ Los Angeles, Dept Phys & Astron, Los Angeles, CA USA

[11] Coll William & Mary, Williamsburg, VA USA

[12] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[13] Ist Nazl Fis Nucl, Sez Catania, Catania, Italy

[14] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA

[15] Hampton Univ, Dept Phys, Hampton, VA 23668 USA

[16] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA

[17] Thomas Jefferson Natl Accelerator Facil, Expt Nucl Phys Div, Newport News, VA USA

[18] Florida Int Univ, Dept Phys, Miami, FL 33199 USA

[19] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[20] SUNY Stony Brook, Stony Brook, NY 11794 USA

[21] Univ Connecticut, Dept Phys, Storrs, CT USA

[22] Ist Nazl Fis Nucl, Rome, Italy

[23] Tohoku Univ, Sendai, Miyagi, Japan

[24] Temple Univ, Philadelphia, PA 19122 USA

[25] Ohio Univ, Athens, OH USA

[26] Nucl Res Ctr Negev, Beer Sheva, Israel

[27] Columbia Univ, New York, NY USA

[28] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB, Canada

[29] Jozef Stefan Inst, Ljubljana, Slovenia

[30] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia

[31] Johannes Gutenberg Univ Mainz, Inst Kernphys, Mainz, Germany

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

[33] St Norbert Coll, De Pere, WI 54115 USA

[34] Inst Phys & Technol, Kharkov, Ukraine

[35] Norfolk State Univ, Norfolk, VA USA

[36] Rutgers State Univ, Dept Phys & Astron, New Brunswick, NJ USA

[37] Univ Ana G Mendez, Div Ciencias & Tecnol, San Juan, PR USA

[38] Yerevan Phys Inst, Yerevan, Armenia

[39] Syracuse Univ, Syracuse, NY USA

[40] Northern Michigan Univ, Marquette, MI USA

[41] Univ Glasgow, Glasgow, Lanark, Scotland

来源：

NATURE | 2022年 / 609卷 / 7925期

基金：

美国国家科学基金会;

关键词：

SCATTERING; PROTON;

D O I：

10.1038/s41586-022-05007-2

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

When protons and neutrons (nucleons) are bound into atomic nuclei, they are close enough to feel significant attraction, or repulsion, from the strong, short-distance part of the nucleon-nucleon interaction. These strong interactions lead to hard collisions between nucleons, generating pairs of highly energetic nucleons referred to as short-range correlations (SRCs). SRCs are an important but relatively poorly understood part of nuclear structure(1-3), and mapping out the strength and the isospin structure (neutron-proton (np) versus proton-proton (pp) pairs) of these virtual excitations is thus critical input for modelling a range of nuclear, particle and astrophysics measurements(3-5). Two-nucleon knockout or 'triple coincidence' reactions have been used to measure the relative contribution of np-SRCs and pp-SRCs by knocking out a proton from the SRC and detecting its partner nucleon (proton or neutron). These measurements(6-8) have shown that SRCs are almost exclusively np pairs, but they had limited statistics and required large model-dependent final-state interaction corrections. Here we report on measurements using inclusive scattering from the mirror nuclei hydrogen-3 and helium-3 to extract the np/pp ratio of SRCs in systems with a mass number of three. We obtain a measure of the np/pp SRC ratio that is an order of magnitude more precise than previous experiments, and find a marked deviation from the near-total np dominance observed in heavy nuclei. This result implies an unexpected structure in the high-momentum wavefunction for hydrogen-3 and helium-3. Understanding these results will improve our understanding of the short-range part of the nucleon-nucleon interaction.

引用

页码：41 / +

页数：11

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