Measurement of the doubly-polarized 3He((γ)over-right-arrow, n)pp reaction at 16.5 MeV and its implications for the GDH sum rule

被引：5

作者：

Laskaris, G. ^{[1
,2
]}

Yan, X. ^{[1
,2
]}

Mueller, J. M. ^{[1
,2
]}

Zimmerman, W. R. ^{[1
,2
]}

Xiong, W. ^{[1
,2
]}

Ahmed, M. W. ^{[1
,2
,3
]}

Averett, T. ^{[4
]}

Chu, P. -H. ^{[1
,2
]}

Deltuva, A. ^{[5
]}

Flower, C. ^{[1
,2
]}

Fonseca, A. C. ^{[6
]}

Gao, H. ^{[1
,2
]}

Golak, J. ^{[7
]}

Heideman, J. N. ^{[1
,8
]}

Karwowski, H. J. ^{[1
,8
]}

Meziane, M. ^{[1
,2
]}

Sauer, P. U. ^{[9
]}

Skibinski, R.

Strakovsky, I. I. ^{[10
]}

Weller, H. R. ^{[1
,2
]}

Witala, H. ^{[7
]}

Wu, Y. K. ^{[1
,2
]}

机构：

[1] Triangle Univ Nucl Lab, Durham, NC 27708 USA

[2] Duke Univ, Dept Phys, Durham, NC 27708 USA

[3] N Carolina Cent Univ, Dept Math & Phys, Durham, NC 27707 USA

[4] Coll William & Mary, Williamsburg, VA 23187 USA

[5] Vilnius State Univ, Inst Theoret Phys & Astron, LT-01108 Vilnius, Lithuania

[6] Univ Lisbon, Ctr Fis Nucl, P-1649003 Lisbon, Portugal

[7] Jagiellonian Univ, M Smoluchowski Inst Phys, PL-30348 Krakow, Poland

[8] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[9] Leibniz Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany

[10] George Washington Univ, Dept Phys, Washington, DC 20052 USA

来源：

PHYSICS LETTERS B | 2015年 / 750卷

关键词：

GDH sum rule; Polarized He-3; Photoabsorption; Polarization observables; HELICITY DEPENDENCE; CROSS-SECTION; DEUTERON PHOTODISINTEGRATION; 3-BODY PHOTODISINTEGRATION; HE-3; NEUTRON; SCATTERING;

D O I：

10.1016/j.physletb.2015.09.065

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report new measurements of the double-polarized photodisintegration of He-3 at an incident photon energy of 16.5 MeV, carried out at the High Intensity gamma-ray Source (HI gamma S) facility located at Triangle Universities Nuclear Laboratory (TUNL). The spin-dependent double-differential cross sections and the contribution from the three-body channel to the Gerasimov-Drell-Hearn (GDH) integrand were extracted and compared with the state-of-the-art three-body calculations. The calculations, which include the Coulomb interaction and are in good agreement with the results of previous measurements at 12.8 and 14.7 MeV, deviate from the new cross section results at 16.5 MeV. The GDH integrand was found to be about one standard deviation larger than the maximum value predicted by the theories. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：547 / 551

页数：5

共 8 条

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Laskaris, G.
21ST INTERNATIONAL CONFERENCE ON FEW-BODY PROBLEMS IN PHYSICS, 2016, 113
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PHYSICAL REVIEW C, 2010, 82 (04):
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PHYSICAL REVIEW LETTERS, 2013, 110 (20)
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PHYSICAL REVIEW LETTERS, 2013, 111 (13)

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