arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1303.4583hep-ph
收藏

双线性R宇称破坏超对称模型中Higgs对双光子衰变率的影响

Implications of Higgs to diphoton decay rate in the bilinear R-parity violating supersymmetric model

R. S. Hundi

摘要:

大型强子对撞机最近发现了一种质量约为125 GeV的类希格斯粒子,并表明与标准模型相比,希格斯粒子到双光子的衰变率有所增加。我们研究了这些发现在双线性R宇称破坏超对称模型中的意义,其主要动机是解释中微子的非零质量。该模型中的R宇称破缺参数为$ε$和$b_ε$,这些参数决定了中微子质量的尺度。如果希格斯粒子到双光子衰变率的增强是真实的,那么我们就发现了$ε\gapprox 0.01$ GeV和$b_ε\sim$ 1 GeV的$^2$,以便与中微子振荡数据相一致。在上述分析中,我们还可以确定slepton的软质量($m_L$)和CP奇Higgs玻色子质量($m_A$)。我们估计$m_L\gapprox$ 300 GeV和$m_A\gapprox$ 700 GeV。我们还评论了$ε$和$b_ε$的允许值,如果没有增强的希格斯双光子衰变率。最后,我们提出了一个模型来解释$ε$和$b_ε$的小。

英文摘要:

The Large Hadron Collider has recently discovered a Higgs-like particle having a mass around 125 GeV and also indicated that there is an enhancement in the Higgs to diphoton decay rate as compared to that in the standard model. We have studied implications of these discoveries in the bilinear R-parity violating supersymmetric model, whose main motivation is to explain the non-zero masses for neutrinos. The R-parity violating parameters in this model are $ε$ and $b_ε$, and these parameters determine the scale of neutrino masses. If the enhancement in the Higgs to diphoton decay rate is true, then we have found $ε\gapprox 0.01$ GeV and $b_ε\sim$ 1 GeV$^2$ in order to be compatible with the neutrino oscillation data. Also, in the above mentioned analysis, we can determine the soft masses of sleptons ($m_L$) and CP-odd Higgs boson mass ($m_A$). We have estimated that $m_L\gapprox$ 300 GeV and $m_A\gapprox$ 700 GeV. We have also commented on the allowed values of $ε$ and $b_ε$, in case there is no enhancement in the Higgs to diphoton decay rate. Finally, we present a model to explain the smallness of $ε$ and $b_ε$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑