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High Energy Physics - Phenomenology

arXiv:1510.08790 (hep-ph)
[Submitted on 29 Oct 2015 (v1), last revised 2 Nov 2015 (this version, v2)]

Title:Looking for New Naturally Aligned Higgs Doublets at the LHC

Authors:P. S. Bhupal Dev, Apostolos Pilaftsis
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Abstract:Since the current LHC Higgs data suggest the couplings of the observed 125 GeV Higgs boson to be close to the Standard Model (SM) expectations, any extended Higgs sector must lead to the so-called SM alignment limit, where one of the Higgs bosons behaves exactly like that of the SM. In the context of the Two Higgs Doublet Model (2HDM), this alignment is often associated with either decoupling of the heavy Higgs sector or accidental cancellations in the 2HDM potential. We present a novel symmetry justification for 'natural' alignment without necessarily decoupling or fine-tuning. We show that there exist only three different symmetry realizations of the natural alignment scenario in 2HDM. We analyze new collider signals for the heavy Higgs sector in the natural alignment limit, which dominantly lead to third-generation quarks in the final state and can serve as a useful observational tool during the Run-II phase of the LHC.
Comments: 20 pages, 7 figures, 1 table; added references. Based on arXiv:1408.3405 and arXiv:1503.09140. To appear in the proceedings of Planck 2015, Ioannina, Greece
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
Cite as: arXiv:1510.08790 [hep-ph]
  (or arXiv:1510.08790v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1510.08790
Journal reference: PoS (PLANCK 2015) 105

Submission history

From: P. S. Bhupal Dev [view email]
[v1] Thu, 29 Oct 2015 17:37:34 UTC (818 KB)
[v2] Mon, 2 Nov 2015 09:10:02 UTC (818 KB)
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