arXiv 1504.017982015-04-12astro-ph.COhep-phhep-thnucl-thphysics.atom-ph

用大爆炸核合成和原子光谱学约束标量暗物质

Constraining scalar dark matter with Big Bang nucleosynthesis and atomic spectroscopy

Y. V. Stadnik, V. V. Flambaum

备注：: 6 pages, 4 figures. Updated results for the mass range m_ϕ<< H. arXiv admin note: text overlap with arXiv:1503.08540

摘要：

标量暗物质可以与标准模型（SM）粒子相互作用，在此过程中改变自然界的基本常数。在大爆炸核合成（BBN）期间和之前的基本常数的变化产生了轻元素原始丰度的变化。通过比较测量和计算（SM内）原始丰度的$^{4}$他，这主要是由中子-质子质量差的比例冻结温度在弱相互作用冻结之前BBN的时间，我们能够推导出严格的约束质量的标量暗物质粒子$ϕ$连同其与光子的相互作用，在$ϕ$中通过二次耦合的轻夸克和大质量矢量玻色子，以及在$ϕ$中通过线性耦合的它与大质量矢量玻色子的相互作用。我们还从最近的原子镝光谱测量中推导出$ϕ$与光子的二次相互作用的严格约束。

英文摘要：

Scalar dark matter can interact with Standard Model (SM) particles, altering the fundamental constants of Nature in the process. Changes in the fundamental constants during and prior to Big Bang nucleosynthesis (BBN) produce changes in the primordial abundances of the light elements. By comparing the measured and calculated (within the SM) primordial abundance of $^{4}$He, which is predominantly determined by the ratio of the neutron-proton mass difference to freeze-out temperature at the time of weak interaction freeze-out prior to BBN, we are able to derive stringent constraints on the mass of a scalar dark matter particle $ϕ$ together with its interactions with the photon, light quarks and massive vector bosons via quadratic couplings in $ϕ$, as well as its interactions with massive vector bosons via linear couplings in $ϕ$. We also derive a stringent constraint on the quadratic interaction of $ϕ$ with the photon from recent atomic dysprosium spectroscopy measurements.

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英文摘要：

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