Measurement of PV asymmetry in n+p→d+γ and γ+d→n+p

LI Yong-Jiang; XU Wang; CAI Xiao-Lu; FAN Gong-Tao; FAN Guang-Wei; LUO Wen; PAN Qiang-Yan; XU Ben-Ji; YANG Li-Feng; YAN Zhe

doi:10.1088/1674-1137/34/9/073

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1465-1468 DOI: 10.1088/1674-1137/34/9/073

Measurement of PV asymmetry in n+p→d+γ and γ+d→n+p

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Abstract：
The measurement of parity-violating (PV) observables in few-nucleon system can shed light on our current understanding of the weak interaction between nucleons. Theoretical models describe the nucleon-nucleon weak interaction at low energies use a series of undetermined parameters. Two parity violating measurements have been considered: the capture of polarized slow neutrons on hydrogen (n+p→d+γ) at Los Alamos National Laboratory for first phase and Oka Ridge National Laboratory for second phase and the helicity dependence of the deuteron photodisintegration cross section using circularly polarized photons (\γ+d→n+p) at Shanghai Institute of Applied Physics. The goal of both experiments is to constraint the weak meson-nucleon couplings to a precision of 1×10^－8. The introduction of both experiments is presented.

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LI Yong-Jiang, XU Wang, CAI Xiao-Lu, FAN Gong-Tao, FAN Guang-Wei, LUO Wen, PAN Qiang-Yan, XU Ben-Ji, YANG Li-Feng and YAN Zhe. Measurement of PV asymmetry in n+p→d+γ and γ+d→n+p[J]. Chinese Physics C, 2010, 34(9): 1465-1468. doi: 10.1088/1674-1137/34/9/073

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Received: 2010-03-04
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Measurement of PV asymmetry in n+p→d+γ and γ+d→n+p

Corresponding author: XU Wang,

Received Date: 2010-03-04

Accepted Date: 1900-01-01

Available Online: 2010-09-05

Abstract:

The measurement of parity-violating (PV) observables in few-nucleon system can shed light on our current understanding of the weak interaction between nucleons. Theoretical models describe the nucleon-nucleon weak interaction at low energies use a series of undetermined parameters. Two parity violating measurements have been considered: the capture of polarized slow neutrons on hydrogen (n+p→d+γ) at Los Alamos National Laboratory for first phase and Oka Ridge National Laboratory for second phase and the helicity dependence of the deuteron photodisintegration cross section using circularly polarized photons (\γ+d→n+p) at Shanghai Institute of Applied Physics. The goal of both experiments is to constraint the weak meson-nucleon couplings to a precision of 1×10^－8. The introduction of both experiments is presented.

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Measurement of PV asymmetry in n+p→d+γ and γ+d→n+p

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通讯作者: 陈斌, bchen63@163.com

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