Abstract
It was proposed recently that different chiralities of the dark matter (DM) fermion under a broken dark U(1) gauge group can lead to distinguishable signatures at the LHC through shower patterns, which may reveal the mass origin of the dark sector. We study this subject further by examining the dark shower of two simplified models, the dubbed Chiral Model and the Vector Model. We derive a more complete set of collinear splitting functions with power corrections, specifying the helicities of the initial DM fermion and including the contribution from an extra degree of freedom, the dark Higgs boson. The dark shower is then implemented with these splitting functions, and the new features resulting from its correct modelling are emphasized. It is shown that the DM fermion chirality can be differentiated by measuring dark shower patterns, especially the DM jet energy profile, which is almost independent of the DM energy.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
B.W. Lee and S. Weinberg, Cosmological Lower Bound on Heavy Neutrino Masses, Phys. Rev. Lett. 39 (1977) 165 [INSPIRE].
G. Jungman, M. Kamionkowski and K. Griest, Supersymmetric dark matter, Phys. Rept. 267 (1996) 195 [hep-ph/9506380] [INSPIRE].
PAMELA collaboration, An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV, Nature 458 (2009) 607 [arXiv:0810.4995] [INSPIRE].
D.N. Spergel and P.J. Steinhardt, Observational evidence for selfinteracting cold dark matter, Phys. Rev. Lett. 84 (2000) 3760 [astro-ph/9909386] [INSPIRE].
N. Arkani-Hamed, D.P. Finkbeiner, T.R. Slatyer and N. Weiner, A Theory of Dark Matter, Phys. Rev. D 79 (2009) 015014 [arXiv:0810.0713] [INSPIRE].
M. Cirelli, M. Kadastik, M. Raidal and A. Strumia, Model-independent implications of the e ± , \( \overline{p} \) cosmic ray spectra on properties of Dark Matter, Nucl. Phys. B 813 (2009) 1 [Addendum ibid. B 873 (2013) 530] [arXiv:0809.2409] [INSPIRE].
N. Arkani-Hamed and N. Weiner, LHC Signals for a SuperUnified Theory of Dark Matter, JHEP 12 (2008) 104 [arXiv:0810.0714] [INSPIRE].
J. Alexander et al., Dark Sectors 2016 Workshop: Community Report, 2016, arXiv:1608.08632 [INSPIRE].
S. Baek, P. Ko and W.-I. Park, Singlet Portal Extensions of the Standard Seesaw Models to a Dark Sector with Local Dark Symmetry, JHEP 07 (2013) 013 [arXiv:1303.4280] [INSPIRE].
P. Ko, Hidden Sector DM Models with Local Dark Gauge Symmetries: Higgs Portal DM Models and Beyond, New Phys. Sae Mulli 66 (2016) 966 [INSPIRE].
B. Holdom, Two U(1)’s and Epsilon Charge Shifts, Phys. Lett. B 166 (1986) 196 [INSPIRE].
T. Cohen, M. Lisanti, H.K. Lou and S. Mishra-Sharma, LHC Searches for Dark Sector Showers, JHEP 11 (2017) 196 [arXiv:1707.05326] [INSPIRE].
J. Chen, T. Han and B. Tweedie, Electroweak Splitting Functions and High Energy Showering, JHEP 11 (2017) 093 [arXiv:1611.00788] [INSPIRE].
M. Buschmann, J. Kopp, J. Liu and P.A.N. Machado, Lepton Jets from Radiating Dark Matter, JHEP 07 (2015) 045 [arXiv:1505.07459] [INSPIRE].
M. Zhang, M. Kim, H.-S. Lee and M. Park, Examining the origin of dark matter mass at colliders, Phys. Rev. D 98 (2018) 055027 [arXiv:1612.02850] [INSPIRE].
N.F. Bell, Y. Cai and R.K. Leane, Impact of mass generation for spin-1 mediator simplified models, JCAP 01 (2017) 039 [arXiv:1610.03063] [INSPIRE].
H. Ruegg and M. Ruiz-Altaba, The Stueckelberg field, Int. J. Mod. Phys. A 19 (2004) 3265 [hep-th/0304245] [INSPIRE].
F. Kahlhoefer, K. Schmidt-Hoberg, T. Schwetz and S. Vogl, Implications of unitarity and gauge invariance for simplified dark matter models, JHEP 02 (2016) 016 [arXiv:1510.02110] [INSPIRE].
T. Sjöstrand et al., An Introduction to PYTHIA 8.2, Comput. Phys. Commun. 191 (2015) 159 [arXiv:1410.3012] [INSPIRE].
S. Alekhin et al., A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case, Rept. Prog. Phys. 79 (2016) 124201 [arXiv:1504.04855] [INSPIRE].
Y. Kitadono and H.-n. Li, Jet substructures of boosted polarized top quarks, Phys. Rev. D 89 (2014) 114002 [arXiv:1403.5512] [INSPIRE].
Y. Kitadono and H.-n. Li, Jet substructures of boosted polarized hadronic top quarks, Phys. Rev. D 93 (2016) 054043 [arXiv:1511.08675] [INSPIRE].
H.-n. Li, Z. Li and C.-P. Yuan, QCD resummation for jet substructures, Phys. Rev. Lett. 107 (2011) 152001 [arXiv:1107.4535] [INSPIRE].
H.-n. Li, Z. Li and C.-P. Yuan, QCD resummation for light-particle jets, Phys. Rev. D 87 (2013) 074025 [arXiv:1206.1344] [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: 1807.00530
Rights and permissions
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, 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 licence, and indicate if changes were made.
The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/.
About this article
Cite this article
Chen, J., Ko, P., Li, Hn. et al. Light dark matter showering under broken dark U(1) — revisited. J. High Energ. Phys. 2019, 141 (2019). https://doi.org/10.1007/JHEP01(2019)141
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP01(2019)141