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arXiv 1408.0774hep-ph
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最小左右对称模型中双荷希格斯玻色子玻色子质量的最低极限

The lowest limits on the doubly charged Higgs boson masses in the minimal left-right symmetric model

G. Bambhaniya, J. Chakrabortty, J. Gluza, T. Jelinski, M. Kordiaczynska

备注：
5 pages, 3 figures. v3: minor changes, references added, version published in PRD
发表信息：
Phys. Rev. D90 (2014) 9, 095003
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摘要：

带双重电荷的希格斯玻色子$H_{1,2}^{\pm\pm}$无疑是新物理学的明确信使。我们讨论了它们的质量谱，并指出了实验数据和标量质量之间的关系是如何限制它们的质量谱的，特别是在FCNC效应中起关键作用的粒子$H_1^0$、$A_1^0$的质量和附加规范玻色子$W_2$、$Z_2$的质量都非常重要。例如，如果$M_{H_1^0,A_1^0}\simeq 15$ TeV和$M_{W_2}\simeq 3.76$ TeV，则$H_1^{\pm\pm}$的最低质量是465 GeV。相反，由于全标量势在参数空间中的自由度，$H_2^{\pm\pm}$的质量没有最低限度。它示出的信号在强子对撞机这样相对轻的双电荷标量可能对应。工作在$\sqrt{s}=14$ TeV的大型强子对撞机将进入这样的区域，在该区域中，具有最小质量的粒子的存在可以被彻底探索，以获得更宽的左右对称模型（MLRSM）的最小和显式版本的参数空间。考虑到我们的考虑和目前的ATLAS和CMS的排斥限制$M_{H^{\pm\pm}}$，已经存在第一部分界限的MLRSM标量位参数。

英文摘要：

The doubly charged Higgs bosons $H_{1,2}^{\pm\pm}$ would undoubtedly be clear messengers of the new physics. We discuss their mass spectrum and show how experimental data and relations between scalar masses put limits on it. In particular, both the masses of the particles $H_1^0$, $A_1^0$ that play a crucial role in FCNC effects and the masses of the additional gauge bosons $W_2$, $Z_2$ are notably important. For instance, if $M_{H_1^0,A_1^0}\simeq 15$ TeV and $M_{W_2}\simeq 3.76$ TeV then the lowest mass of $H_1^{\pm\pm}$ is 465 GeV. In contrast, due to the freedom in the parameter space of the full scalar potential, there is no lowest limit on the mass of $H_2^{\pm\pm}$. It is shown to which signals at hadron colliders such relatively light doubly charged scalars might correspond. LHC working at $\sqrt{s}=14$ TeV will enter into the region where existence of such particles with minimal masses can be thoroughly explored for a much wider parameter space of the minimal and manifest version of the left-right symmetric model (MLRSM). Taking into account our considerations and present ATLAS and CMS exclusion limits on $M_{H^{\pm\pm}}$, there exist already first partial bounds on some of the MLRSM scalar potential parameters.

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