arXiv 2004.109962020-04-23hep-ph

DUNE疏轻子暗物质的前景

DUNE prospect for leptophobic dark matter

Sabeeha Naaz, Jyotsna Singh, R. B. Singh

备注：: 11, 3
DOI：: 10.1155/2020/9047818

摘要：

高能质子/电子束固定靶实验扩展了探测亚GeV暗物质及其相互作用的机会。在这项工作中，我们探讨了亚GeV的疏轻子暗物质，即这暗物质几乎没有耦合的轻子的DUNE的敏感性。重子数规范理论可以预言疏轻子冷暗物质候选粒子的存在。在我们的工作中，候选的暗物质被认为是标量，其质量由新的重子规范群$U(1)_{B}$的对称破缺定义。在这种情况下，轻标量暗物质通过属于重子规范群$U(1)_{B}$的矢量玻色子介体$V_{B}$与标准模型候选者耦合。疏轻子的暗物质主要与夸克耦合。在这种情况下，DUNE为疏轻暗物质候选者探索了$α_{B}$的新参数空间。这个新的参数空间允许$α_{B}$得到比$α_{B}$的当前现有约束值（即$10^{-6}$）更低的值。

英文摘要：

Highly energetic proton/electron beam fixed target experiments extends an opportunity to probe the sub-GeV dark matter and associated interactions. In this work we have explored the sensitivity of DUNE for sub-GeV leptophobic dark matter i.e. this dark matter barely couples with the leptons. Baryon number gauge theory can predicts the existence of a leptophobic cold dark matter particle candidates. In our work, the dark matter candidate is considered to be scalar whose mass is defined by the symmetry breaking of new baryonic gauge group $U(1)_{B}$. In this scenario a light scalar dark matter couples with the standard model candidates via vector boson mediator $V_{B}$ which belongs to the baryonic gauge group $U(1)_{B}$. This leptophobic dark matter dominantly couples to the quarks. Under this scenario new parameter space for $α_{B}$ is explored by DUNE for leptophobic dark matter candidates. This new parameter space allowed $α_{B}$ to get lower value than the present exiting constraint value of $α_{B}$ i.e. $10^{-6}$.

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摘要：

英文摘要：

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