Low-energy photodisintegration of the deuteron and Big-Bang nucleosynthesis

被引：43

作者：

Tornow, W ^{[1
]}

Czakon, NG

Howell, CR

Hutcheson, A

Kelley, JH

Litvinenko, VN

Mikhailov, SF

Pinayev, IV

Weisel, GJ

Witala, H

机构：

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

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

[3] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[4] Duke Univ, Free Elect Laser Lab, Durham, NC 27708 USA

[5] Penn State Altoona, Dept Phys, Altoona, PA 16601 USA

[6] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland

来源：

PHYSICS LETTERS B | 2003年 / 574卷 / 1-2期

关键词：

D O I：

10.1016/j.physletb.2003.08.078

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The photon analyzing, power for the photodisintegration of the deuteron was measured for seven gamma-ray energies between 2.39 and 4.05 MeV using the linearly polarized gamma-ray beam of the high-intensity gamma-ray source at the Duke Free-Electron Laser Laboratory. The data provide a stringent test of theoretical calculations for the inverse reaction, the neutron-proton radiative capture reaction at energies important for Big-Bang nucleosynthesis. Our data are in excellent agreement with potential model and effective field theory calculations. Therefore, the uncertainty in the baryon density Omega(B)h(2) obtained from Big-Bang Nucleosynthesis can be reduced at least by 20%. (C) 2003 Published by Elsevier B.V.

引用

页码：8 / 13

页数：6

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