Abstract
The neutralino dark matter (DM) predicted by the Minimal Supersymmetric Standard Model (MSSM) has been probed in several search modes at the Large Hadron Collider (LHC), one of the leading ones among which is the trilepton plus missing transverse momentum channel. The experimental analysis of this mode has, however, been designed to probe mainly a bino-like DM, originating in the decays of a pair of next-to-lightest neutralino and lightest chargino, both of which are assumed to be wino-like. In this study, we analyse how this trilepton channel can be tuned for probing also the wino-like DM. We note that, while the mentioned standard production mode generally leads to a relatively poor sensitivity for the wino-like DM, there are regions in the MSSM parameter space where the net yield in the trilepton final state can be substantially enhanced at the LHC with \( \sqrt{s}=14 \) TeV. This is achieved by taking into account also an alternative channel, pair-production of the wino-like DM itself in association with the heavier chargino, and optimisation of the kinematical cuts currently employed by the LHC collaborations. In particular, we find that the cut on the transverse mass of the third lepton highly suppresses both the signal channels and should therefore be discarded in this DM scenario. We perform a detailed detector-level study of some selected parameter space points that are consistent with the most important experimental constraints, including the recent ones from the direct and indirect DM detection facilities. Our analysis demonstrates the high complementarity of the two channels, with their combined significance reaching above 4σ for a wino-like DM mass around 100 GeV, with an integrated luminosity as low as 100 fb−1.
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
WMAP collaboration, G. Hinshaw et al., Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results, Astrophys. J. Suppl. 208 (2013) 19 [arXiv:1212.5226] [INSPIRE].
Planck collaboration, P.A.R. Ade et al., Planck 2015 results. XIII. Cosmological parameters, Astron. Astrophys. 594 (2016) A13 [arXiv:1502.01589] [INSPIRE].
C. Brust, A. Katz, S. Lawrence and R. Sundrum, SUSY, the Third Generation and the LHC, JHEP 03 (2012) 103 [arXiv:1110.6670] [INSPIRE].
M. Papucci, J.T. Ruderman and A. Weiler, Natural SUSY Endures, JHEP 09 (2012) 035 [arXiv:1110.6926] [INSPIRE].
L.J. Hall, D. Pinner and J.T. Ruderman, A Natural SUSY Higgs Near 126 GeV, JHEP 04 (2012) 131 [arXiv:1112.2703] [INSPIRE].
J.L. Feng and D. Sanford, A Natural 125 GeV Higgs Boson in the MSSM from Focus Point Supersymmetry with A-Terms, Phys. Rev. D 86 (2012) 055015 [arXiv:1205.2372] [INSPIRE].
J. Cao, C. Han, L. Wu, J.M. Yang and Y. Zhang, Probing Natural SUSY from Stop Pair Production at the LHC, JHEP 11 (2012) 039 [arXiv:1206.3865] [INSPIRE].
H. Baer, V. Barger, P. Huang, A. Mustafayev and X. Tata, Radiative natural SUSY with a 125 GeV Higgs boson, Phys. Rev. Lett. 109 (2012) 161802 [arXiv:1207.3343] [INSPIRE].
C. Han, F. Wang and J.M. Yang, Natural SUSY from SU(5) Orbifold GUT, JHEP 11 (2013) 197 [arXiv:1304.5724] [INSPIRE].
C. Han, K.-i. Hikasa, L. Wu, J.M. Yang and Y. Zhang, Current experimental bounds on stop mass in natural SUSY, JHEP 10 (2013) 216 [arXiv:1308.5307] [INSPIRE].
K. Kowalska and E.M. Sessolo, Natural MSSM after the LHC 8 TeV run, Phys. Rev. D 88 (2013) 075001 [arXiv:1307.5790] [INSPIRE].
N. Arkani-Hamed, A. Delgado and G.F. Giudice, The well-tempered neutralino, Nucl. Phys. B 741 (2006) 108 [hep-ph/0601041] [INSPIRE].
P. Bergeron and S. Profumo, IceCube, DeepCore, PINGU and the indirect search for supersymmetric dark matter, JCAP 01 (2014) 026 [arXiv:1312.4445] [INSPIRE].
D. Hooper and L. Goodenough, Dark Matter Annihilation in The Galactic Center As Seen by the Fermi Gamma Ray Space Telescope, Phys. Lett. B 697 (2011) 412 [arXiv:1010.2752] [INSPIRE].
D. Hooper and T. Linden, On The Origin Of The Gamma Rays From The Galactic Center, Phys. Rev. D 84 (2011) 123005 [arXiv:1110.0006] [INSPIRE].
G.F. Giudice, M.A. Luty, H. Murayama and R. Rattazzi, Gaugino mass without singlets, JHEP 12 (1998) 027 [hep-ph/9810442] [INSPIRE].
L. Randall and R. Sundrum, Out of this world supersymmetry breaking, Nucl. Phys. B 557 (1999) 79 [hep-th/9810155] [INSPIRE].
J.A. Bagger, T. Moroi and E. Poppitz, Anomaly mediation in supergravity theories, JHEP 04 (2000) 009 [hep-th/9911029] [INSPIRE].
M. Beneke et al., Relic density of wino-like dark matter in the MSSM, JHEP 03 (2016) 119 [arXiv:1601.04718] [INSPIRE].
M. Chakraborti, U. Chattopadhyay and S. Poddar, How light a higgsino or a wino dark matter can become in a compressed scenario of MSSM, JHEP 09 (2017) 064 [arXiv:1702.03954] [INSPIRE].
T. Moroi and L. Randall, Wino cold dark matter from anomaly mediated SUSY breaking, Nucl. Phys. B 570 (2000) 455 [hep-ph/9906527] [INSPIRE].
B.S. Acharya, P. Kumar, K. Bobkov, G. Kane, J. Shao and S. Watson, Non-thermal Dark Matter and the Moduli Problem in String Frameworks, JHEP 06 (2008) 064 [arXiv:0804.0863] [INSPIRE].
K.M. Zurek, Multi-Component Dark Matter, Phys. Rev. D 79 (2009) 115002 [arXiv:0811.4429] [INSPIRE].
L. Roszkowski, E.M. Sessolo and S. Trojanowski, WIMP dark matter candidates and searches — current issues and future prospects, arXiv:1707.06277 [INSPIRE].
J.F. Gunion and S. Mrenna, A study of SUSY signatures at the Tevatron in models with near mass degeneracy of the lightest chargino and neutralino, Phys. Rev. D 62 (2000) 015002 [hep-ph/9906270] [INSPIRE].
G.F. Giudice, T. Han, K. Wang and L.-T. Wang, Nearly Degenerate Gauginos and Dark Matter at the LHC, Phys. Rev. D 81 (2010) 115011 [arXiv:1004.4902] [INSPIRE].
J. Goodman, M. Ibe, A. Rajaraman, W. Shepherd, T.M.P. Tait and H.-B. Yu, Constraints on Dark Matter from Colliders, Phys. Rev. D 82 (2010) 116010 [arXiv:1008.1783] [INSPIRE].
P.J. Fox, R. Harnik, J. Kopp and Y. Tsai, Missing Energy Signatures of Dark Matter at the LHC, Phys. Rev. D 85 (2012) 056011 [arXiv:1109.4398] [INSPIRE].
C. Han, A. Kobakhidze, N. Liu, A. Saavedra, L. Wu and J.M. Yang, Probing Light Higgsinos in Natural SUSY from Monojet Signals at the LHC, JHEP 02 (2014) 049 [arXiv:1310.4274] [INSPIRE].
P. Schwaller and J. Zurita, Compressed electroweakino spectra at the LHC, JHEP 03 (2014) 060 [arXiv:1312.7350] [INSPIRE].
H. Baer, A. Mustafayev and X. Tata, Monojets and mono-photons from light higgsino pair production at LHC14, Phys. Rev. D 89 (2014) 055007 [arXiv:1401.1162] [INSPIRE].
A. Anandakrishnan, L.M. Carpenter and S. Raby, Degenerate gaugino mass region and mono-boson collider signatures, Phys. Rev. D 90 (2014) 055004 [arXiv:1407.1833] [INSPIRE].
D. Barducci, A. Belyaev, A.K.M. Bharucha, W. Porod and V. Sanz, Uncovering Natural Supersymmetry via the interplay between the LHC and Direct Dark Matter Detection, JHEP 07 (2015) 066 [arXiv:1504.02472] [INSPIRE].
K. Rolbiecki and K. Sakurai, Constraining compressed supersymmetry using leptonic signatures, JHEP 10 (2012) 071 [arXiv:1206.6767] [INSPIRE].
Z. Han, G.D. Kribs, A. Martin and A. Menon, Hunting quasidegenerate Higgsinos, Phys. Rev. D 89 (2014) 075007 [arXiv:1401.1235] [INSPIRE].
J. Bramante, A. Delgado, F. Elahi, A. Martin and B. Ostdiek, Catching sparks from well-forged neutralinos, Phys. Rev. D 90 (2014) 095008 [arXiv:1408.6530] [INSPIRE].
H. Baer, A. Mustafayev and X. Tata, Monojet plus soft dilepton signal from light higgsino pair production at LHC14, Phys. Rev. D 90 (2014) 115007 [arXiv:1409.7058] [INSPIRE].
C. Han, L. Wu, J.M. Yang, M. Zhang and Y. Zhang, New approach for detecting a compressed bino/wino at the LHC, Phys. Rev. D 91 (2015) 055030 [arXiv:1409.4533] [INSPIRE].
C. Han, D. Kim, S. Munir and M. Park, Accessing the core of naturalness, nearly degenerate higgsinos, at the LHC, JHEP 04 (2015) 132 [arXiv:1502.03734] [INSPIRE].
D0 collaboration, S. Abachi et al., Search for \( {\tilde{W}}_1{\tilde{Z}}_2 \) Production via Trilepton Final States in \( p\overline{p} \) collisions at \( \sqrt{s}=1.8 \) TeV, Phys. Rev. Lett. 76 (1996) 2228 [hep-ex/9512004] [INSPIRE].
CDF collaboration, F. Abe et al., Search for chargino-neutralino production in \( p\overline{p} \) collisions at \( \sqrt{s}=1.8 \) TeV, Phys. Rev. Lett. 76 (1996) 4307 [hep-ex/9603001] [INSPIRE].
H. Baer, M. Drees, F. Paige, P. Quintana and X. Tata, Trilepton signal for supersymmetry at the Fermilab Tevatron revisited, Phys. Rev. D 61 (2000) 095007 [hep-ph/9906233] [INSPIRE].
CDF and D0 collaboration, M. Chertok, Trilepton searches for chargino-neutralino production at the Tevatron, in Proceedings, 16th International Workshop on Deep Inelastic Scattering and Related Subjects (DIS 2008): London, U.K., April 7-11, 2008, (2008), p. 108, [ https://doi.org/https://doi.org/10.3360/dis.2008.108].
ATLAS collaboration, Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in \( \sqrt{s}=8 \) TeV pp collisions with the ATLAS detector, JHEP 04 (2014) 169 [arXiv:1402.7029] [INSPIRE].
CMS collaboration, Searches for electroweak production of charginos, neutralinos and sleptons decaying to leptons and W, Z and Higgs bosons in pp collisions at 8 TeV, Eur. Phys. J. C 74 (2014) 3036 [arXiv:1405.7570] [INSPIRE].
ATLAS collaboration, Search for supersymmetry with two and three leptons and missing transverse momentum in the final state at \( \sqrt{s}=13 \) TeV with the ATLAS detector, ATLAS-CONF-2016-096 (2016).
CMS collaboration, Search for electroweak production of charginos and neutralinos in multilepton final states in pp collision data at \( \sqrt{s}=13 \) TeV, CMS-PAS-SUS-16-039 (2016).
ATLAS collaboration, Search for electroweak production of supersymmetric particles in the two and three lepton final state at \( \sqrt{s}=13 \) TeV with the ATLAS detector, ATLAS-CONF-2017-039 (2017).
CMS collaboration, Combined search for electroweak production of charginos and neutralinos in pp collisions at \( \sqrt{s}=13 \) TeV, CMS-PAS-SUS-17-004 (2017).
S. Gori, S. Jung and L.-T. Wang, Cornering electroweakinos at the LHC, JHEP 10 (2013) 191 [arXiv:1307.5952] [INSPIRE].
M. van Beekveld, W. Beenakker, S. Caron and R. Ruiz de Austri, The case for 100 GeV bino dark matter: A dedicated LHC tri-lepton search, JHEP 04 (2016) 154 [arXiv:1602.00590] [INSPIRE].
HFLAV collaboration, Y. Amhis et al., Averages of b-hadron, c-hadron and τ -lepton properties as of summer 2016, Eur. Phys. J. C 77 (2017) 895 [arXiv:1612.07233] [INSPIRE].
LHCb collaboration, Measurement of the B 0 s → μ + μ − branching fraction and effective lifetime and search for B 0 → μ + μ − decays, Phys. Rev. Lett. 118 (2017) 191801 [arXiv:1703.05747] [INSPIRE].
ATLAS and CMS collaborations, Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at \( \sqrt{s}=7 \) and 8 TeV, JHEP 08 (2016) 045 [arXiv:1606.02266] [INSPIRE].
W. Porod and F. Staub, SPheno 3.1: Extensions including flavour, CP-phases and models beyond the MSSM, Comput. Phys. Commun. 183 (2012) 2458 [arXiv:1104.1573] [INSPIRE].
W. Porod, SPheno, a program for calculating supersymmetric spectra, SUSY particle decays and SUSY particle production at e + e − colliders, Comput. Phys. Commun. 153 (2003) 275 [hep-ph/0301101] [INSPIRE].
G. Bélanger, F. Boudjema, A. Pukhov and A. Semenov, MicrOMEGAs 2.0: A program to calculate the relic density of dark matter in a generic model, Comput. Phys. Commun. 176 (2007) 367 [hep-ph/0607059] [INSPIRE].
G. Bélanger, F. Boudjema, A. Pukhov and A. Semenov, MicrOMEGAs 3 : A program for calculating dark matter observables, Comput. Phys. Commun. 185 (2014) 960 [arXiv:1305.0237] [INSPIRE].
G. Bélanger, F. Boudjema, A. Pukhov and A. Semenov, MicrOMEGAs4.1: two dark matter candidates, Comput. Phys. Commun. 192 (2015) 322 [arXiv:1407.6129] [INSPIRE].
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].
ATLAS and CMS collaborations, Combined Measurement of the Higgs Boson Mass in pp Collisions at \( \sqrt{s}=7 \) and 8 TeV with the ATLAS and CMS Experiments, Phys. Rev. Lett. 114 (2015) 191803 [arXiv:1503.07589] [INSPIRE].
P. Bechtle, S. Heinemeyer, O. Stål, T. Stefaniak and G. Weiglein, HiggsSignals: Confronting arbitrary Higgs sectors with measurements at the Tevatron and the LHC, Eur. Phys. J. C 74 (2014) 2711 [arXiv:1305.1933] [INSPIRE].
P. Bechtle, O. Brein, S. Heinemeyer, G. Weiglein and K.E. Williams, HiggsBounds: Confronting Arbitrary Higgs Sectors with Exclusion Bounds from LEP and the Tevatron, Comput. Phys. Commun. 181 (2010) 138 [arXiv:0811.4169] [INSPIRE].
P. Bechtle, O. Brein, S. Heinemeyer, G. Weiglein and K.E. Williams, HiggsBounds 2.0.0: Confronting Neutral and Charged Higgs Sector Predictions with Exclusion Bounds from LEP and the Tevatron, Comput. Phys. Commun. 182 (2011) 2605 [arXiv:1102.1898] [INSPIRE].
P. Bechtle et al., HiggsBounds − 4: Improved Tests of Extended Higgs Sectors against Exclusion Bounds from LEP, the Tevatron and the LHC, Eur. Phys. J. C 74 (2014) 2693 [arXiv:1311.0055] [INSPIRE].
XENON collaboration, E. Aprile et al., First Dark Matter Search Results from the XENON1T Experiment, Phys. Rev. Lett. 119 (2017) 181301 [arXiv:1705.06655] [INSPIRE].
Fermi-LAT and MAGIC collaborations, M.L. Ahnen et al., 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 disappearing tracks in proton-proton collisions at \( \sqrt{s}=8 \) TeV, JHEP 01 (2015) 096 [arXiv:1411.6006] [INSPIRE].
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].
W. Beenakker, R. Hopker and M. Spira, PROSPINO: A program for the production of supersymmetric particles in next-to-leading order QCD, hep-ph/9611232 [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 Physics and Manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, The anti-k t jet clustering algorithm, JHEP 04 (2008) 063 [arXiv:0802.1189] [INSPIRE].
DELPHES 3 collaboration, J. de Favereau et al., DELPHES 3, A modular framework for fast simulation of a generic collider experiment, JHEP 02 (2014) 057 [arXiv:1307.6346] [INSPIRE].
E. Conte, B. Fuks and G. Serret, MadAnalysis 5, A User-Friendly Framework for Collider Phenomenology, Comput. Phys. Commun. 184 (2013) 222 [arXiv:1206.1599] [INSPIRE].
CMS collaboration, T. Yetkin, Operational experience with the CMS hadronic calorimeter system, J. Phys. Conf. Ser. 293 (2011) 012054 [INSPIRE].
F. Gianotti et al., Physics potential and experimental challenges of the LHC luminosity upgrade, Eur. Phys. J. C 39 (2005) 293 [hep-ph/0204087] [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
ArXiv ePrint: 1710.05536
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
About this article
Cite this article
Abdallah, W., Khalil, S., Moretti, S. et al. Closing in on the Wino LSP via trilepton searches at the LHC. J. High Energ. Phys. 2018, 155 (2018). https://doi.org/10.1007/JHEP01(2018)155
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP01(2018)155