Abstract
We consider a scenario where an SU(2) triplet scalar acts as the portal for a scalar dark matter particle. We identify regions of the parameter space, where such a triplet coexists with the usual Higgs doublet consistently with all theoretical as well as neutrino, accelerator and dark matter constraints, and the triplet-dominated neutral state has substantial invisible branching fraction. LHC signals are investigated for such regions, in the final state same-sign dilepton + ≥ 2 jets + . While straightforward detectability at the high-luminosity run is predicted for some benchmark points in a cut-based analysis, there are other benchmarks where one has to resort to gradient boosting/neural network techniques in order to achieve appreciable signal significance.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
XENON collaboration, Dark matter search results from a one ton-year exposure of XENON1T, Phys. Rev. Lett. 121 (2018) 111302 [arXiv:1805.12562] [INSPIRE].
A. Drozd, B. Grzadkowski, J.F. Gunion and Y. Jiang, Extending two-Higgs-doublet models by a singlet scalar field — the case for dark matter, JHEP 11 (2014) 105 [arXiv:1408.2106] [INSPIRE].
J. Bernon, J.F. Gunion, H.E. Haber, Y. Jiang and S. Kraml, Scrutinizing the alignment limit in two-Higgs-doublet models: mh = 125 GeV, Phys. Rev. D 92 (2015) 075004 [arXiv:1507.00933] [INSPIRE].
D. Chowdhury and O. Eberhardt, Update of global two-Higgs-doublet model fits, JHEP 05 (2018) 161 [arXiv:1711.02095] [INSPIRE].
A. Dey, J. Lahiri and B. Mukhopadhyaya, Extended scalar sectors, effective operators and observed data, JHEP 11 (2018) 127 [arXiv:1808.04869] [INSPIRE].
A. Dey, J. Lahiri and B. Mukhopadhyaya, LHC signals of a heavy doublet Higgs as dark matter portal: cut-based approach and improvement with gradient boosting and neural networks, JHEP 09 (2019) 004 [arXiv:1905.02242] [INSPIRE].
M. Magg and C. Wetterich, Neutrino mass problem and gauge hierarchy, Phys. Lett. B 94 (1980) 61 [INSPIRE].
J. Schechter and J.W.F. Valle, Neutrino masses in SU(2) × U(1) theories, Phys. Rev. D 22 (1980) 2227 [INSPIRE].
G. Lazarides, Q. Shafi and C. Wetterich, Proton lifetime and fermion masses in an SO(10) model, Nucl. Phys. B 181 (1981) 287 [INSPIRE].
R.N. Mohapatra and G. Senjanović, Neutrino masses and mixings in gauge models with spontaneous parity violation, Phys. Rev. D 23 (1981) 165 [INSPIRE].
T.P. Cheng and L.-F. Li, Neutrino masses, mixings and oscillations in SU(2) × U(1) models of electroweak interactions, Phys. Rev. D 22 (1980) 2860 [INSPIRE].
S.M. Bilenky, J. Hosek and S.T. Petcov, On oscillations of neutrinos with Dirac and Majorana masses, Phys. Lett. B 94 (1980) 495 [INSPIRE].
I. Yu. Kobzarev, B.V. Martemyanov, L.B. Okun and M.G. Shchepkin, The phenomenology of neutrino oscillations, Sov. J. Nucl. Phys. 32 (1980) 823 [Yad. Fiz. 32 (1980) 1590] [INSPIRE].
J.F. Gunion, R. Vega and J. Wudka, Higgs triplets in the Standard Model, Phys. Rev. D 42 (1990) 1673 [INSPIRE].
B. Mukhopadhyaya, Exotic Higgs interactions and Z factories, Phys. Lett. B 252 (1990) 123 [INSPIRE].
R.N. Mohapatra and P.B. Pal, Massive neutrinos in physics and astrophysics, World Sci. Lect. Notes Phys. 41 (1991) 1 [INSPIRE].
E. Ma and U. Sarkar, Neutrino masses and leptogenesis with heavy Higgs triplets, Phys. Rev. Lett. 80 (1998) 5716 [hep-ph/9802445] [INSPIRE].
A. Chaudhuri, W. Grimus and B. Mukhopadhyaya, Doubly charged scalar decays in a type-II seesaw scenario with two Higgs triplets, JHEP 02 (2014) 060 [arXiv:1305.5761] [INSPIRE].
P.S.B. Dev, D.K. Ghosh, N. Okada and I. Saha, Neutrino mass and dark matter in light of recent AMS-02 results, Phys. Rev. D 89 (2014) 095001 [arXiv:1307.6204] [INSPIRE].
A. Chaudhuri and B. Mukhopadhyaya, CP-violating phase in a two Higgs triplet scenario: some phenomenological implications, Phys. Rev. D 93 (2016) 093003 [arXiv:1602.07846] [INSPIRE].
W. Krolikowski, A new weak-isospin triplet of scalars and ‘electroweak portal’ to hidden sector of the universe, arXiv:1211.6010 [INSPIRE].
R. Primulando, J. Julio and P. Uttayarat, Scalar phenomenology in type-II seesaw model, JHEP 08 (2019) 024 [arXiv:1903.02493] [INSPIRE].
R. Godbole, B. Mukhopadhyaya and M. Nowakowski, Triplet Higgs bosons at e+e− colliders, Phys. Lett. B 352 (1995) 388 [hep-ph/9411324] [INSPIRE].
K.-M. Cheung, R.J.N. Phillips and A. Pilaftsis, Signatures of Higgs triplet representations at TeV e+e− colliders, Phys. Rev. D 51 (1995) 4731 [hep-ph/9411333] [INSPIRE].
D.K. Ghosh, R.M. Godbole and B. Mukhopadhyaya, Unusual charged Higgs signals at LEP-2, Phys. Rev. D 55 (1997) 3150 [hep-ph/9605407] [INSPIRE].
P. Fileviez Perez, T. Han, G.-Y. Huang, T. Li and K. Wang, Neutrino masses and the CERN LHC: testing type II seesaw, Phys. Rev. D 78 (2008) 015018 [arXiv:0805.3536] [INSPIRE].
Y. Du, A. Dunbrack, M.J. Ramsey-Musolf and J.-H. Yu, Type-II seesaw scalar triplet model at a 100 TeV pp collider: discovery and Higgs portal coupling determination, JHEP 01 (2019) 101 [arXiv:1810.09450] [INSPIRE].
D. Kumar Ghosh, N. Ghosh and B. Mukhopadhyaya, Distinctive collider signals for a two Higgs triplet model, Phys. Rev. D 99 (2019) 015036 [arXiv:1808.01775] [INSPIRE].
P.S. Bhupal Dev and Y. Zhang, Displaced vertex signatures of doubly charged scalars in the type-II seesaw and its left-right extensions, JHEP 10 (2018) 199 [arXiv:1808.00943] [INSPIRE].
W. Grimus, R. Pfeiffer and T. Schwetz, A four neutrino model with a Higgs triplet, Eur. Phys. J. C 13 (2000) 125 [hep-ph/9905320] [INSPIRE].
P. Fileviez Perez, T. Han, G.-Y. Huang, T. Li and K. Wang, Testing a neutrino mass generation mechanism at the LHC, Phys. Rev. D 78 (2008) 071301 [arXiv:0803.3450] [INSPIRE].
A. Alloul, N.D. Christensen, C. Degrande, C. Duhr and B. Fuks, FeynRules 2.0 — a complete toolbox for tree-level phenomenology, Comput. Phys. Commun. 185 (2014) 2250 [arXiv:1310.1921] [INSPIRE].
P. Dey, A. Kundu and B. Mukhopadhyaya, Some consequences of a Higgs triplet, J. Phys. G 36 (2009) 025002 [arXiv:0802.2510] [INSPIRE].
A.G. Akeroyd and C.-W. Chiang, Phenomenology of large mixing for the CP-even neutral scalars of the Higgs triplet model, Phys. Rev. D 81 (2010) 115007 [arXiv:1003.3724] [INSPIRE].
A. Arhrib et al., The Higgs potential in the type II seesaw model, Phys. Rev. D 84 (2011) 095005 [arXiv:1105.1925] [INSPIRE].
C. Bonilla, R.M. Fonseca and J.W.F. Valle, Consistency of the triplet seesaw model revisited, Phys. Rev. D 92 (2015) 075028 [arXiv:1508.02323] [INSPIRE].
J.M. Cornwall, D.N. Levin and G. Tiktopoulos, Derivation of gauge invariance from high-energy unitarity bounds on the S matrix, Phys. Rev. D 10 (1974) 1145 [Erratum ibid. D 11 (1975) 972] [INSPIRE].
D.A. Dicus and V.S. Mathur, Upper bounds on the values of masses in unified gauge theories, Phys. Rev. D 7 (1973) 3111 [INSPIRE].
L. Lavoura and L.-F. Li, Making the small oblique parameters large, Phys. Rev. D 49 (1994) 1409 [hep-ph/9309262] [INSPIRE].
E.J. Chun, H.M. Lee and P. Sharma, Vacuum stability, perturbativity, EWPD and Higgs-to-diphoton rate in type II seesaw models, JHEP 11 (2012) 106 [arXiv:1209.1303] [INSPIRE].
S. Kanemura, K. Yagyu and H. Yokoya, First constraint on the mass of doubly-charged Higgs bosons in the same-sign diboson decay scenario at the LHC, Phys. Lett. B 726 (2013) 316 [arXiv:1305.2383] [INSPIRE].
S. Kanemura, M. Kikuchi, K. Yagyu and H. Yokoya, Bounds on the mass of doubly-charged Higgs bosons in the same-sign diboson decay scenario, Phys. Rev. D 90 (2014) 115018 [arXiv:1407.6547] [INSPIRE].
ATLAS collaboration, Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at \( \sqrt{s} \) = 13 TeV, Eur. Phys. J. C 78 (2018) 199 [arXiv:1710.09748] [INSPIRE].
ATLAS collaboration, Search for doubly charged scalar bosons decaying into same-sign W boson pairs with the ATLAS detector, Eur. Phys. J. C 79 (2019) 58 [arXiv:1808.01899] [INSPIRE].
Planck collaboration, Planck 2013 results. XVI. Cosmological parameters, Astron. Astrophys. 571 (2014) A16 [arXiv:1303.5076] [INSPIRE].
Fermi-LAT collaboration, Searching for dark matter annihilation from Milky Way dwarf spheroidal galaxies with six years of Fermi Large Area Telescope data, Phys. Rev. Lett. 115 (2015) 231301 [arXiv:1503.02641] [INSPIRE].
MAGIC and Fermi-LAT collaborations, Limits to dark matter annihilation cross-section from a combined analysis of MAGIC and Fermi-LAT observations of dwarf satellite galaxies, JCAP 02 (2016) 039 [arXiv:1601.06590] [INSPIRE].
CMS collaboration, Search for invisible decays of a Higgs boson produced through vector boson fusion in proton-proton collisions at \( \sqrt{s} \) = 13 TeV, Phys. Lett. B 793 (2019) 520 [arXiv:1809.05937] [INSPIRE].
I. Esteban, M.C. Gonzalez-Garcia, A. Hernandez-Cabezudo, M. Maltoni and T. Schwetz, Global analysis of three-flavour neutrino oscillations: synergies and tensions in the determination of θ23, δCP and the mass ordering, JHEP 01 (2019) 106 [arXiv:1811.05487] [INSPIRE].
CMS collaboration, A search for doubly-charged Higgs boson production in three and four lepton final states at \( \sqrt{s} \) = 13 TeV, CMS-PAS-HIG-16-036, CERN, Geneva, Switzerland (2017).
J. Alwall et al., The automated computation of tree-level and next-to-leading order differential cross sections and their matching to parton shower simulations, JHEP 07 (2014) 079 [arXiv:1405.0301] [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 physics and manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].
DELPHES 3 collaboration, DELPHES 3, a modular framework for fast simulation of a generic collider experiment, JHEP 02 (2014) 057 [arXiv:1307.6346] [INSPIRE].
CMS collaboration, Search for new physics in same-sign dilepton events in proton-proton collisions at \( \sqrt{s} \) = 13 TeV, Eur. Phys. J. C 76 (2016) 439 [arXiv:1605.03171] [INSPIRE].
T. Han, B. Mukhopadhyaya, Z. Si and K. Wang, Pair production of doubly-charged scalars: neutrino mass constraints and signals at the LHC, Phys. Rev. D 76 (2007) 075013 [arXiv:0706.0441] [INSPIRE].
T. Chen and C. Guestrin, XGBoost: a scalable tree boosting system, arXiv:1603.02754 [INSPIRE].
L. Teodorescu, Artificial neural networks in high-energy physics, in Computing. Proceedings, inverted CERN School of Computing, ICSC2005 and ICSC2006, Geneva, Switzerland, 23–25 February 2005 and 6–8 March 2006, CERN-2008-002, CERN, Geneva, Switzerland (2008), pg. 13.
P. Baldi, P. Sadowski and D. Whiteson, Searching for exotic particles in high-energy physics with deep learning, Nature Commun. 5 (2014) 4308 [arXiv:1402.4735] [INSPIRE].
MicroBooNE collaboration, Automated proton track identification in MicroBooNE using gradient boosted decision trees, in Proceedings, Meeting of the APS Division of Particles and Fields (DPF 2017), Fermilab, Batavia, IL, U.S.A., 31 July–4 August 2017, FERMILAB-CONF-17-440-E, (2018) [arXiv:1710.00898] [INSPIRE].
K.Y. Oyulmaz, A. Senol, H. Denizli and O. Cakir, Top quark anomalous FCNC production via tqg couplings at FCC-hh, Phys. Rev. D 99 (2019) 115023 [arXiv:1902.03037] [INSPIRE].
B. Bhattacherjee, S. Mukherjee and R. Sengupta, Study of energy deposition patterns in hadron calorimeter for prompt and displaced jets using convolutional neural network, JHEP 11 (2019) 156 [arXiv:1904.04811] [INSPIRE].
K. Hultqvist, R. Jacobsson and K.E. Johansson, Using a neural network in the search for the Higgs boson, Nucl. Instrum. Meth. A 364 (1995) 193 [INSPIRE].
R.D. Field, Y. Kanev, M. Tayebnejad and P.A. Griffin, Using neural networks to enhance the Higgs boson signal at hadron colliders, Phys. Rev. D 53 (1996) 2296 [INSPIRE].
N. Bakhet, M. Yu. Khlopov and T. Hussein, Neural networks search for charged Higgs boson of two doublet Higgs model at the hadrons colliders, arXiv:1507.06547 [INSPIRE].
K. Lasocha, E. Richter-Was, M. Sadowski and Z. Was, Deep neural network application: Higgs boson CP state mixing angle in H → ττ decay and at LHC, arXiv:2001.00455 [INSPIRE].
J.R. Hermans, Distributed Keras: Distributed Deep Learning with Apache Spark and Keras, https://joerihermans.com/work/distributed-keras/.
B.P. Roe, H.-J. Yang, J. Zhu, Y. Liu, I. Stancu and G. McGregor, Boosted decision trees, an alternative to artificial neural networks, Nucl. Instrum. Meth. A 543 (2005) 577 [physics/0408124] [INSPIRE].
ATLAS collaboration, Combination of searches for invisible Higgs boson decays with the ATLAS experiment, Phys. Rev. Lett. 122 (2019) 231801 [arXiv:1904.05105] [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
ArXiv ePrint: 2001.09349
Rights and permissions
This article is published under an open access license. Please check the 'Copyright Information' section either on this page or in the PDF for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.
About this article
Cite this article
Dey, A., Lahiri, J. & Mukhopadhyaya, B. LHC signals of triplet scalars as dark matter portal: cut-based approach and improvement with gradient boosting and neural networks. J. High Energ. Phys. 2020, 126 (2020). https://doi.org/10.1007/JHEP06(2020)126
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP06(2020)126