Abstract
An important tool for interpreting LHC searches for new physics are simplified models. They are characterized by a small number of parameters and thus often rely on a simplified description of particle production and decay dynamics. Considering the production of squarks of the first two generations we compare the interpretation of current LHC searches for hadronic jets plus missing energy signatures within simplified models with the interpretation within a complete supersymmetric model. Although we find sizable differences in the signal efficiencies, in particular for large supersymmetric particle masses, the differences between the mass limits derived from a simplified model and from the complete supersymmetric model are moderate given the current LHC sensitivity. We conclude that simplified models provide a reliable tool to interpret the current hadronic jets plus missing energy searches at the LHC in a more model-independent way.
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References
N. Arkani-Hamed et al., MARMOSET: the path from LHC data to the new standard model via on-shell effective theories, hep-ph/0703088 [INSPIRE].
J. Alwall, P. Schuster and N. Toro, Simplified models for a first characterization of new physics at the LHC, Phys. Rev. D 79 (2009) 075020 [arXiv:0810.3921] [INSPIRE].
LHC New Physics Working Group collaboration, D. Alves et al., Simplified models for LHC new physics searches, J. Phys. G 39 (2012) 105005 [arXiv:1105.2838] [INSPIRE].
D.S.M. Alves, E. Izaguirre and J.G. Wacker, Where the sidewalk ends: jets and missing energy search strategies for the 7 TeV LHC, JHEP 10 (2011) 012 [arXiv:1102.5338] [INSPIRE].
S. Kraml et al., SModelS: a tool for interpreting simplified-model results from the LHC and its application to supersymmetry, Eur. Phys. J. C 74 (2014) 2868 [arXiv:1312.4175] [INSPIRE].
M. Papucci, K. Sakurai, A. Weiler and L. Zeune, Fastlim: a fast LHC limit calculator, arXiv:1402.0492 [INSPIRE].
ATLAS collaboration, Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using \( \sqrt{s}=8 \) TeV proton-proton collision data, JHEP 09 (2014) 176 [arXiv:1405.7875] [INSPIRE].
CMS collaboration, Search for supersymmetry in hadronic final states with missing transverse energy using the variables α T and b-quark multiplicity in pp collisions at \( \sqrt{s}=8 \) TeV, Eur. Phys. J. C 73 (2013) 2568 [arXiv:1303.2985] [INSPIRE].
CMS collaboration, Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at \( \sqrt{s}=8 \) TeV, JHEP 06 (2014) 055 [arXiv:1402.4770] [INSPIRE].
CMS collaboration, Interpretation of searches for supersymmetry with simplified models, Phys. Rev. D 88 (2013) 052017 [arXiv:1301.2175] [INSPIRE].
J. Jaeckel, V.V. Khoze, T. Plehn and P. Richardson, Travels on the squark-gluino mass plane, Phys. Rev. D 85 (2012) 015015 [arXiv:1109.2072] [INSPIRE].
W. Beenakker, R. Hopker, M. Spira and P.M. Zerwas, Squark and gluino production at hadron colliders, Nucl. Phys. B 492 (1997) 51 [hep-ph/9610490] [INSPIRE].
J. Alwall, M. Herquet, F. Maltoni, O. Mattelaer and T. Stelzer, MadGraph 5: going beyond, JHEP 06 (2011) 128 [arXiv:1106.0522] [INSPIRE].
L. Randall and D. Tucker-Smith, Dijet searches for supersymmetry at the LHC, Phys. Rev. Lett. 101 (2008) 221803 [arXiv:0806.1049] [INSPIRE].
CMS collaboration, Search for supersymmetry in pp collisions at 7 TeV in events with jets and missing transverse energy, Phys. Lett. B 698 (2011) 196 [arXiv:1101.1628] [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 physics and manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].
J. Alwall et al., Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions, Eur. Phys. J. C 53 (2008) 473 [arXiv:0706.2569] [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].
M. Cacciari, G.P. Salam and G. Soyez, FastJet user manual, Eur. Phys. J. C 72 (2012) 1896 [arXiv:1111.6097] [INSPIRE].
CMS collaboration, Identification of b-quark jets with the CMS experiment, 2013 JINST 8 P04013 [arXiv:1211.4462] [INSPIRE].
W. Beenakker et al., Soft-gluon resummation for squark and gluino hadroproduction, JHEP 12 (2009) 041 [arXiv:0909.4418] [INSPIRE].
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ArXiv ePrint: 1410.0965
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Edelhäuser, L., Heisig, J., Krämer, M. et al. Constraining supersymmetry at the LHC with simplified models for squark production. J. High Energ. Phys. 2014, 22 (2014). https://doi.org/10.1007/JHEP12(2014)022
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DOI: https://doi.org/10.1007/JHEP12(2014)022