Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-10-20
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 28 figures, text slightly modified, version to appear in Physical Review D
Scientific paper
In general, there can be mass differences among scalar bosons of the Higgs triplet field with the hypercharge of Y=1. In the Higgs triplet model, when the vacuum expectation value $v_\Delta$ of the triplet field is much smaller than that $v$ ($\simeq 246$ GeV) of the Higgs doublet field as required by the electroweak precision data, a characteristic mass spectrum $ m_{H^{++}}^2-m_{H^+}^2\simeq m_{H^+}^2-m_{\phi^0}^2(\equiv \xi)$ appears, where $m_{H^{++}}$, $m_{H^+}$, $m_{\phi^0}$ are the masses of the doubly-charged ($H^{++}$), the singly-charged ($H^+$) and the neutral ($\phi^0=H^0$ or $A^0$) scalar bosons, respectively. It should be emphasized that phenomenology with $\xi\neq 0$ is drastically different from that in the case with $\xi=0$ where the doubly-charged scalar boson decays into the same sign dilepton $\ell^+\ell^+$ or the diboson $W^+W^+$ depending on the size of $v_\Delta$. We find that, in the case of $\xi > 0$, where $H^{++}$ is the heaviest, $H^{++}$ can be identified via the cascade decays such as $H^{++}\to H^+W^{+(*)}\to \phi^0 W^{+(*)}W^{+(*)}\to b\bar{b}\ell^+\nu\ell^+\nu$. We outline how the Higgs triplet model can be explored in such a case at the LHC. By the determination of the mass spectrum, the model can be tested and further can be distinguished from the other models with doubly-charged scalar bosons.
Aoki Mayumi
Kanemura Shinya
Yagyu Kei
No associations
LandOfFree
Testing the Higgs triplet model with the mass difference at the LHC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Testing the Higgs triplet model with the mass difference at the LHC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing the Higgs triplet model with the mass difference at the LHC will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-552672