Abstract
We study an extension of the minimal supersymmetric standard model with a zero hypercharge triplet, and the effect that such a particle has on stop decays. This model has the capability of predicting a 125.5 GeV Higgs even in the presence of light stops and it can modify the diphoton rate by means of the extra charged fermion triplet coupled to the Higgs. Working in the limit where the scalar triplet decouples, and with small values of m A , we find that the fermion triplet can greatly affect the branching ratios of the stops, even in the absence of a direct stop-triplet coupling. We compare the triplet extension with the MSSM and discuss how the additional fields affect the search for stop pair production.
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References
ATLAS collaboration, Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B 716 (2012) 1 [arXiv:1207.7214] [INSPIRE].
CMS collaboration, Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Phys. Lett. B 716 (2012) 30 [arXiv:1207.7235] [INSPIRE].
CMS collaboration, Observation of a new boson with mass near 125 GeV in pp collisions at \( \sqrt{s} \) = 7 and 8TeV,JHEP 06 (2013) 081 [arXiv:1303.4571] [INSPIRE].
A. Delgado, G.F. Giudice, G. Isidori, M. Pierini and A. Strumia, The light stop window, Eur. Phys. J. C 73 (2013) 2370 [arXiv:1212.6847] [INSPIRE].
K. Agashe, A. Azatov, A. Katz and D. Kim, Improving the tunings of the MSSM by adding triplets and singlet, Phys. Rev. D 84 (2011) 115024 [arXiv:1109.2842] [INSPIRE].
A. Delgado, G. Nardini and M. Quirós, Large diphoton Higgs rates from supersymmetric triplets, Phys. Rev. D 86 (2012) 115010 [arXiv:1207.6596] [INSPIRE].
A. Delgado, G. Nardini and M. Quirós, A Light Supersymmetric Higgs Sector Hidden by a Standard Model-like Higgs, JHEP 07 (2013) 054 [arXiv:1303.0800] [INSPIRE].
P. Bandyopadhyay, K. Huitu and A. Sabanci, Status of Y = 0 Triplet Higgs with supersymmetry in the light of ∼ 125 GeV Higgs discovery, JHEP 10 (2013) 091 [arXiv:1306.4530] [INSPIRE].
CMS collaboration, Search for top-squark pair production in the single-lepton final state in pp collisions at \( \sqrt{s} \) = 8 TeV, Eur. Phys. J. C 73 (2013) 2677 [arXiv:1308.1586] [INSPIRE].
ATLAS collaboration, Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in \( \sqrt{s} \) = 8 TeV pp collisions with the ATLAS detector, JHEP 10 (2013) 189 [arXiv:1308.2631] [INSPIRE].
CMS collaboration, Search for supersymmetry in hadronic final states with missing transverse energy using the variables αT and b-quark multiplicity in pp collisions at \( \sqrt{s} \) = 8TeV,Eur. Phys. J. C 73 (2013) 2568 [arXiv:1303.2985] [INSPIRE].
ATLAS collaboration, Search for new phenomena in final states with large jet multiplicities and missing transverse momentum at \( \sqrt{s} \) = 8 TeV proton-proton collisions using the ATLAS experiment, JHEP 10 (2013) 130 [arXiv:1308.1841] [INSPIRE].
J. Espinosa and M. Quirós, Higgs triplets in the supersymmetric standard model, Nucl. Phys. B 384 (1992) 113 [INSPIRE].
M. Carena, I. Low, N.R. Shah and C.E.M. Wagner, Impersonating the Standard Model Higgs Boson: Alignment without Decoupling, arXiv:1310.2248 [INSPIRE].
N.D. Christensen and C. Duhr, FeynRules — Feynman rules made easy, Comput. Phys. Commun. 180 (2009) 1614 [arXiv:0806.4194] [INSPIRE].
C. Duhr and B. Fuks, A superspace module for the FeynRules package, Comput. Phys. Commun. 182 (2011) 2404 [arXiv:1102.4191] [INSPIRE].
J. Alwall, M. Herquet, F. Maltoni, O. Mattelaer and T. Stelzer, MadGraph 5: Going Beyond, JHEP 06 (2011) 128 [arXiv:1106.0522] [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 Physics and Manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].
http://www.physics.ucdavis.edu/~conway/research/software/pgs/pgs4-general.htm.
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de Blas, J., Delgado, A., Ostdiek, B. et al. Indirect effects of supersymmetric triplets in stop decays. J. High Energ. Phys. 2014, 177 (2014). https://doi.org/10.1007/JHEP01(2014)177
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DOI: https://doi.org/10.1007/JHEP01(2014)177