Abstract
We investigate the sensitivity at current and future hadron colliders to a heavy electrically-charged particle with a proper decay length below a centimetre, whose decay products are invisible due to below-threshold energies and/or small couplings to the Standard Model. A cosmologically-motivated example of a framework that contains such a particle is the Minimal Supersymmetric Standard Model in the limit of pure Higgsinos. The current hadron-collider search strategy has no sensitivity to the upper range of pure-Higgsino masses that are consistent with the thermal relic density, even at a future collider with 100 TeV centre-of-mass energy. We show that performing a disappearing track search within the inner 10 cm of detector volume would improve the reach in lifetime by a factor of 3 at the 14 TeV LHC and a further factor of 5 at a 100 TeV collider, resulting in around 10 events for 1.1 TeV thermal Higgsinos. In order to include the particles with the largest boost in the analysis, we furthermore propose a purely track-based search in both the central and forward regions, each of which would increase the number of events by another factor of 5, improving our reach at small lifetimes. This would allow us to definitively discover or exclude the experimentally-elusive pure-Higgsino thermal relic at a 100 TeV collider. Our results illustrate the importance of varying detector design when assessing the reach of future high energy colliders.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
Change history
10 October 2017
An erratum to this article has been published.
References
M.J. Strassler and K.M. Zurek, Echoes of a hidden valley at hadron colliders, Phys. Lett. B 651 (2007) 374 [hep-ph/0604261] [INSPIRE].
Z. Chacko, H.-S. Goh and R. Harnik, The twin Higgs: Natural electroweak breaking from mirror symmetry, Phys. Rev. Lett. 96 (2006) 231802 [hep-ph/0506256] [INSPIRE].
G. Burdman, Z. Chacko, H.-S. Goh and R. Harnik, Folded supersymmetry and the LEP paradox, JHEP 02 (2007) 009 [hep-ph/0609152] [INSPIRE].
J.P. Chou, D. Curtin and H.J. Lubatti, New Detectors to Explore the Lifetime Frontier, Phys. Lett. B 767 (2017) 29 [arXiv:1606.06298] [INSPIRE].
M. Low and L.-T. Wang, Neutralino dark matter at 14 TeV and 100 TeV, JHEP 08 (2014) 161 [arXiv:1404.0682] [INSPIRE].
M. Cirelli, F. Sala and M. Taoso, Wino-like Minimal Dark Matter and future colliders, JHEP 10 (2014) 033 [Erratum ibid. 1501 (2015) 041] [arXiv:1407.7058] [INSPIRE].
J. Halverson, N. Orlofsky and A. Pierce, Vectorlike Leptons as the Tip of the Dark Matter Iceberg, Phys. Rev. D 90 (2014) 015002 [arXiv:1403.1592] [INSPIRE].
S. Jung and H.-S. Lee, Constraining Higgsino Kink Tracks from Existing LHC Searches, Int. J. Mod. Phys. A 32 (2017) 1750070 [arXiv:1503.00414] [INSPIRE].
B. Ostdiek, Constraining the minimal dark matter fiveplet with LHC searches, Phys. Rev. D 92 (2015) 055008 [arXiv:1506.03445] [INSPIRE].
V.V. Khoze, A.D. Plascencia and K. Sakurai, Simplified models of dark matter with a long-lived co-annihilation partner, JHEP 06 (2017) 041 [arXiv:1702.00750] [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].
S. Gori, S. Jung and L.-T. Wang, Cornering electroweakinos at the LHC, JHEP 10 (2013) 191 [arXiv:1307.5952] [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].
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].
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].
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].
S. Gori, S. Jung, L.-T. Wang and J.D. Wells, Prospects for Electroweakino Discovery at a 100 TeV Hadron Collider, JHEP 12 (2014) 108 [arXiv:1410.6287] [INSPIRE].
T. Liu, L. Wang and J.M. Yang, Pseudo-goldstino and electroweakinos via VBF processes at LHC, JHEP 02 (2015) 177 [arXiv:1411.6105] [INSPIRE].
J. Bramante et al., Relic Neutralino Surface at a 100 TeV Collider, Phys. Rev. D 91 (2015) 054015 [arXiv:1412.4789] [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].
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].
M. Badziak, A. Delgado, M. Olechowski, S. Pokorski and K. Sakurai, Detecting underabundant neutralinos, JHEP 11 (2015) 053 [arXiv:1506.07177] [INSPIRE].
A. Ismail, E. Izaguirre and B. Shuve, Illuminating New Electroweak States at Hadron Colliders, Phys. Rev. D 94 (2016) 015001 [arXiv:1605.00658] [INSPIRE].
R. Mahbubani and J. Zurita, To appear.
ATLAS collaboration, Search for charginos nearly mass degenerate with the lightest neutralino based on a disappearing-track signature in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, Phys. Rev. D 88 (2013) 112006 [arXiv:1310.3675] [INSPIRE].
CMS collaboration, Search for disappearing tracks in proton-proton collisions at \( \sqrt{s}=8 \) TeV, JHEP 01 (2015) 096 [arXiv:1411.6006] [INSPIRE].
S.D. Thomas and J.D. Wells, Phenomenology of Massive Vectorlike Doublet Leptons, Phys. Rev. Lett. 81 (1998) 34 [hep-ph/9804359] [INSPIRE].
M. Cirelli, N. Fornengo and A. Strumia, Minimal dark matter, Nucl. Phys. B 753 (2006) 178 [hep-ph/0512090] [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].
M.L. Mangano, M. Moretti, F. Piccinini, R. Pittau and A.D. Polosa, ALPGEN, a generator for hard multiparton processes in hadronic collisions, JHEP 07 (2003) 001 [hep-ph/0206293] [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, FastJet User Manual, Eur. Phys. J. C 72 (2012) 1896 [arXiv:1111.6097] [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].
E. Conte, B. Dumont, B. Fuks and C. Wymant, Designing and recasting LHC analyses with MadAnalysis 5, Eur. Phys. J. C 74 (2014) 3103 [arXiv:1405.3982] [INSPIRE].
B. Dumont et al., Toward a public analysis database for LHC new physics searches using MADANALYSIS 5, Eur. Phys. J. C 75 (2015) 56 [arXiv:1407.3278] [INSPIRE].
W. Beenakker, M. Klasen, M. Krämer, T. Plehn, M. Spira and P.M. Zerwas, The production of charginos/neutralinos and sleptons at hadron colliders, Phys. Rev. Lett. 83 (1999) 3780 [Erratum ibid. 100 (2008) 029901] [hep-ph/9906298] [INSPIRE].
ATLAS collaboration, Search for winos using a disappearing track signature in ATLAS, ATL-PHYS-SLIDE-2017-104 (2017).
P. Schwaller, D. Stolarski and A. Weiler, Emerging Jets, JHEP 05 (2015) 059 [arXiv:1502.05409] [INSPIRE].
C.H. Chen, M. Drees and J.F. Gunion, A nonstandard string/SUSY scenario and its phenomenological implications, Phys. Rev. D 55 (1997) 330 [Erratum ibid. D 60 (1999) 039901] [hep-ph/9607421] [INSPIRE].
C.H. Chen, M. Drees and J.F. Gunion, Addendum/erratum for ‘searching for invisible and almost invisible particles at e+ e- colliders’ [hep-ph/9512230] and ‘a nonstandard string/SUSY scenario and its phenomenological implications’ [hep-ph/9607421], hep-ph/9902309.
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: 1703.05327
An erratum to this article can be found online at http://dx.doi.org/10.1007/JHEP10(2017)061.
An erratum to this article is available at https://doi.org/10.1007/JHEP10(2017)061.
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
Mahbubani, R., Schwaller, P. & Zurita, J. Closing the window for compressed dark sectors with disappearing charged tracks. J. High Energ. Phys. 2017, 119 (2017). https://doi.org/10.1007/JHEP06(2017)119
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP06(2017)119