MuSun: muon capture on the deuteron
MuSun: muon capture on the deuteron
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MuSun：氘核上的 μ 子捕获
DOI：
10.1051/epjconf/20159504037
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发表时间：
2015
期刊：
影响因子：
1.6
通讯作者：
Xiao Luo
中科院分区：
文献类型：
--
作者：
Xiao Luo
PSI的MuSun实验的目标是以1.5%的精度测量氘核上的μ子捕获率。这个速率将被用来确定手征微扰理论中描述双核子弱轴流的低能常数。因此，它将校准对太阳质子-质子聚变和中微子-氘核散射（SNO实验）的评价。MuSun是系统计划的一部分，旨在实现弱相互作用，QCD和少体物理理论的新精度。MuSun从成功测量质子上μ子捕获率的MuCap实验中继承了一些发展良好的技术和设备，该实验也在PSI进行。与MuCap一样，MuSun使用TPC作为活动目标。为了优化分子动力学，其超纯氘气保持在31 K。将介绍硬件状况和2013年进行的高统计运行的数据分析细节。
The goal of the MuSun experiment at PSI is to measure the rate of muon capture on the deuteron with a precision of 1.5%. This rate will be used to fix the low-energy constant that describes the two-nucleon weak axial current in Chiral perturbation theory. It will therefore calibrate evaluations of solar proton-proton fusion and neutrino-deuteron scattering(SNO experiment). MuSun forms part of the systematic program to achieve a new level of precision in confronting the theories of weak interactions, QCD and few body physics. MuSun inherits some of the well developed techniques and apparatus from a successful measurement of the rate for muon capture on the proton, the MuCap experiment, also performed at PSI. As in MuCap, MuSun uses a TPC as an active target. To optimize the molecular kinetics, its ultra-pure deuterium gas is kept at 31K. The status of the hardware and details of the data analysis for a high statistics run taken in 2013 will be presented.