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High Energy Physics - Phenomenology

arXiv:1503.02135 (hep-ph)
[Submitted on 7 Mar 2015 (v1), last revised 30 Jun 2015 (this version, v2)]

Title:Search for a 'stable alignment limit' in two Higgs-doublet models

Authors:Dipankar Das, Ipsita Saha
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Abstract:We study the conditions required to make the 2HDM scalar potential stable up to the Planck scale. The lightest CP-even scalar is assumed to have been found at the LHC and the {\em alignment limit} is imposed in view of the LHC Higgs data. We find that ensuring stability up to scales $\gtrsim 10^{10}$~GeV necessitates the introduction of a soft breaking parameter in the theory. Even then, some interesting correlations between the nonstandard masses and the soft breaking parameter need to be satisfied. Consequently, a 2HDM becomes completely determined by only two nonstandard parameters, namely, $\tb$ and a mass parameter, $m_0$, with $\tb \gtrsim 3$. These observations make a 2HDM, in the {\em stable alignment limit}, more predictive than ever.
Comments: References added, some comments added, matches with published PRD version
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1503.02135 [hep-ph]
  (or arXiv:1503.02135v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1503.02135
Journal reference: Phys. Rev. D 91, 095024 (2015)
Related DOI: https://doi.org/10.1103/PhysRevD.91.095024

Submission history

From: Ipsita Saha [view email]
[v1] Sat, 7 Mar 2015 06:56:46 UTC (1,053 KB)
[v2] Tue, 30 Jun 2015 14:53:55 UTC (1,120 KB)
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