Abstract
We study the monojet and dijet channels at the LHC as a tool for searching for squarks and gluinos. We consider two separate R-parity conserving supersymmetric scenarios. In the first scenario we postulate a large mass hierarchy between squarks (\( \overset{\sim }{q} \)) and winos (\( \overset{\sim }{W} \)), and wino-like neutralino is assumed to be the lightest supersymmetric particle (LSP). The associated squark-wino production, pp → \( \overset{\sim }{q}\overset{\sim }{W} \), then leads to a monojet-like signature, where the high pT jet is originated from the squark decay, \( \overset{\sim }{q} \) → q + \( \overset{\sim }{W} \). We demonstrate that this associated production, as well as the pp → \( \overset{\sim }{W}\overset{\sim }{W} \) + jets production, have a significant impact on the exclusion limit in the squark-neutralino mass plane. The second scenario postulates that the lighter of the squark and gluino is only a few GeV heavier than the LSP neutralino. The associated squark-gluino production, pp → \( \overset{\sim }{q}\overset{\sim }{g} \), then leads to a distinctive monojet signature, where the high pT jet is produced from the decay of the heavier coloured particle into the lighter one (\( \overset{\sim }{q} \) → q+\( \overset{\sim }{g} \) for \( {m}_{\tilde{q}} \) > \( {m}_{\tilde{g}} \) and \( \overset{\sim }{g} \) → q+\( \overset{\sim }{q} \) for \( {m}_{\tilde{g}} \) > \( {m}_{\tilde{q}} \)). The lighter coloured particle is effectively regarded as an invisible particle since the decay products are soft due to the approximate mass degeneracy. We recast existing monojet and dijet analyses and find a non-trivial exclusion limit in the squark-gluino mass plane in this scenario.
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G.R. Farrar and P. Fayet, Phenomenology of the production, decay, and detection of new hadronic states associated with supersymmetry, Phys. Lett. B 76 (1978) 575 [INSPIRE].
S. Weinberg, Upper bound on gauge fermion masses, Phys. Rev. Lett. 50 (1983) 387 [INSPIRE].
J.R. Ellis, J.S. Hagelin, D.V. Nanopoulos, K.A. Olive and M. Srednicki, Supersymmetric relics from the big bang, Nucl. Phys. B 238 (1984) 453 [INSPIRE].
J. Alwall, M.-P. Le, M. Lisanti and J.G. Wacker, Model-independent jets plus missing energy searches, Phys. Rev. D 79 (2009) 015005 [arXiv:0809.3264] [INSPIRE].
ATLAS collaboration, Search for new phenomena in events with an energetic jet and missing transverse momentum in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector, Phys. Rev. D 103 (2021) 112006 [arXiv:2102.10874] [INSPIRE].
CMS collaboration, Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at \( \sqrt{s} \) = 13 TeV, JHEP 11 (2021) 153 [arXiv:2107.13021] [INSPIRE].
ATLAS collaboration, Search for new phenomena in monojet plus missing transverse momentum final states using 1 fb−1 of pp collisions at \( \sqrt{s} \) = 7 TeV with the ATLAS detector, Tech. Rep. ATLAS-CONF-2011-096, CERN, Geneva, Switzerland (2011).
CMS collaboration, Search for new physics with a monojet and missing transverse energy in pp collisions at \( \sqrt{s} \) = 7 TeV, Tech. Rep. CMS-PAS-EXO-11-059, CERN, Geneva, Switzerland (2011).
H.K. Dreiner, M. Krämer and J. Tattersall, How low can SUSY go? Matching, monojets and compressed spectra, EPL 99 (2012) 61001 [arXiv:1207.1613] [INSPIRE].
ATLAS collaboration, Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb−1 of \( \sqrt{s} \) = 13 TeV pp collision data with the ATLAS detector, JHEP 02 (2021) 143 [arXiv:2010.14293] [INSPIRE].
A. De Simone, G.F. Giudice and A. Strumia, Benchmarks for dark matter searches at the LHC, JHEP 06 (2014) 081 [arXiv:1402.6287] [INSPIRE].
S. Profumo and C.E. Yaguna, Gluino coannihilations and heavy bino dark matter, Phys. Rev. D 69 (2004) 115009 [hep-ph/0402208] [INSPIRE].
K. Harigaya, K. Kaneta and S. Matsumoto, Gaugino coannihilations, Phys. Rev. D 89 (2014) 115021 [arXiv:1403.0715] [INSPIRE].
J. Ellis, F. Luo and K.A. Olive, Gluino coannihilation revisited, JHEP 09 (2015) 127 [arXiv:1503.07142] [INSPIRE].
CMS collaboration, Search for supersymmetry in proton-proton collisions at 13 TeV in final states with jets and missing transverse momentum, JHEP 10 (2019) 244 [arXiv:1908.04722] [INSPIRE].
ATLAS collaboration, Search for long-lived charginos based on a disappearing-track signature using 136 fb−1 of pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector, Eur. Phys. J. C 82 (2022) 606 [arXiv:2201.02472] [INSPIRE].
T. Buanes, I. Lara, K. Rolbiecki and K. Sakurai, LHC constraints on electroweakino dark matter revisited, arXiv:2208.04342 [INSPIRE].
B. Fuks, M. Klasen, D.R. Lamprea and M. Rothering, Precision predictions for electroweak superpartner production at hadron colliders with Resummino, Eur. Phys. J. C 73 (2013) 2480 [arXiv:1304.0790] [INSPIRE].
J. Fiaschi, B. Fuks, M. Klasen and A. Neuwirth, Soft gluon resummation for associated squark-electroweakino production at the LHC, JHEP 06 (2022) 130 [arXiv:2202.13416] [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].
A. Kulesza and L. Motyka, Threshold resummation for squark-antisquark and gluino-pair production at the LHC, Phys. Rev. Lett. 102 (2009) 111802 [arXiv:0807.2405] [INSPIRE].
A. Kulesza and L. Motyka, Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC, Phys. Rev. D 80 (2009) 095004 [arXiv:0905.4749] [INSPIRE].
W. Beenakker, S. Brensing, M. Krämer, A. Kulesza, E. Laenen and I. Niessen, Soft-gluon resummation for squark and gluino hadroproduction, JHEP 12 (2009) 041 [arXiv:0909.4418] [INSPIRE].
W. Beenakker, S. Brensing, M. Krämer, A. Kulesza, E. Laenen and I. Niessen, NNLL resummation for squark-antisquark pair production at the LHC, JHEP 01 (2012) 076 [arXiv:1110.2446] [INSPIRE].
W. Beenakker et al., Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction, JHEP 10 (2013) 120 [arXiv:1304.6354] [INSPIRE].
W. Beenakker et al., NNLL resummation for squark and gluino production at the LHC, JHEP 12 (2014) 023 [arXiv:1404.3134] [INSPIRE].
W. Beenakker, C. Borschensky, M. Krämer, A. Kulesza and E. Laenen, NNLL-fast: predictions for coloured supersymmetric particle production at the LHC with threshold and Coulomb resummation, JHEP 12 (2016) 133 [arXiv:1607.07741] [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].
R.D. Ball et al., Parton distributions with LHC data, Nucl. Phys. B 867 (2013) 244 [arXiv:1207.1303] [INSPIRE].
A. Buckley et al., LHAPDF6: parton density access in the LHC precision era, Eur. Phys. J. C 75 (2015) 132 [arXiv:1412.7420] [INSPIRE].
T. Sjöstrand et al., An introduction to PYTHIA 8.2, Comput. Phys. Commun. 191 (2015) 159 [arXiv:1410.3012] [INSPIRE].
M.L. Mangano, M. Moretti, F. Piccinini and M. Treccani, Matching matrix elements and shower evolution for top-quark production in hadronic collisions, JHEP 01 (2007) 013 [hep-ph/0611129] [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, FastJet user manual, Eur. Phys. J. C 72 (2012) 1896 [arXiv:1111.6097] [INSPIRE].
M. Cacciari and G.P. Salam, Dispelling the N3 myth for the kt jet-finder, Phys. Lett. B 641 (2006) 57 [hep-ph/0512210] [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].
M. Drees, H. Dreiner, D. Schmeier, J. Tattersall and J.S. Kim, CheckMATE: confronting your favourite new physics model with LHC data, Comput. Phys. Commun. 187 (2015) 227 [arXiv:1312.2591] [INSPIRE].
D. Dercks, N. Desai, J.S. Kim, K. Rolbiecki, J. Tattersall and T. Weber, CheckMATE 2: from the model to the limit, Comput. Phys. Commun. 221 (2017) 383 [arXiv:1611.09856] [INSPIRE].
J.S. Kim, D. Schmeier, J. Tattersall and K. Rolbiecki, A framework to create customised LHC analyses within CheckMATE, Comput. Phys. Commun. 196 (2015) 535 [arXiv:1503.01123] [INSPIRE].
M. Baak, G.J. Besjes, D. Côte, A. Koutsman, J. Lorenz and D. Short, HistFitter software framework for statistical data analysis, Eur. Phys. J. C 75 (2015) 153 [arXiv:1410.1280] [INSPIRE].
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Lara, I., Buanes, T., Masełek, R. et al. Monojet signatures from gluino and squark decays. J. High Energ. Phys. 2022, 150 (2022). https://doi.org/10.1007/JHEP10(2022)150
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DOI: https://doi.org/10.1007/JHEP10(2022)150