Constraints on Spin-Dependent Short-Range Interaction between Nucleons
Constraints on Spin-Dependent Short-Range Interaction between Nucleons
复制标题
DOI：
10.1103/physrevlett.111.100801
复制
发表时间：
2013-09-03
影响因子：
8.6
通讯作者：
Trahms, L.
中科院分区：
文献类型：
--
作者：
Tullney, K.;Allmendinger, F.;Trahms, L.
我们寻找一个自旋相关的P-和T-违反核子核子相互作用介导的轻赝标玻色子，如轴子或类轴子粒子。我们采用超灵敏的低场磁力计的基础上，使用SQUID作为低噪声磁通量探测器的共位的He-3和Xe-129核自旋的自由进动的检测。在非极化质量的存在下的进动频移测量，以确定赝标粒子的耦合束缚中子的自旋。对于玻色子质量在2和500 μ eV之间（力的范围在3 × 10（-4）m和10（-1）m之间），我们将实验室上限提高了4个数量级。
We search for a spin-dependent P- and T-violating nucleon-nucleon interaction mediated by light pseudoscalar bosons such as axions or axionlike particles. We employ an ultrasensitive low-field magnetometer based on the detection of free precession of colocated He-3 and Xe-129 nuclear spins using SQUIDs as low-noise magnetic flux detectors. The precession frequency shift in the presence of an unpolarized mass was measured to determine the coupling of pseudoscalar particles to the spin of the bound neutron. For boson masses between 2 and 500 mu eV (force ranges between 3 x 10(-4) m and 10(-1) m) we improved the laboratory upper bounds by up to 4 orders of magnitude.