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Unitarity-controlled resonances after the Higgs boson discovery

Christoph Englert1,*, Philip Harris2,†, Michael Spannowsky3,‡, and Michihisa Takeuchi4,§

  • 1SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom
  • 2CERN, CH-1211 Geneva 23, Switzerland
  • 3Institute for Particle Physics Phenomenology, Department of Physics, Durham University, Durham DH1 3LE, United Kingdom
  • 4Kavli IPMU (WPI), The University of Tokyo, Kashiwa 277-8583, Japan

  • *christoph.englert@glasgow.ac.uk
  • philip.coleman.harris@cern.ch
  • michael.spannowsky@durham.ac.uk
  • §michihisa.takeuchi@kcl.ac.uk

Phys. Rev. D 92, 013003 – Published 7 July, 2015

DOI: https://doi.org/10.1103/PhysRevD.92.013003

Abstract

If the recently discovered Higgs boson’s couplings deviate from the Standard Model expectation, we may anticipate new resonant physics in the weak boson fusion channels resulting from high scale unitarity sum rules of longitudinal gauge boson scattering. Motivated by excesses in analyses of multi-leptons + missing energy + jets final states during run 1, we perform a phenomenological investigation of these channels at the LHC bounded by current Higgs coupling constraints. Such an approach constrains the prospects to observe such new physics at the LHC as a function of very few and generic parameters and allows the investigation of the strong requirement of probability conservation in the electroweak sector to high energies.

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References (41)

  1. F. Englert and R. Brout, Broken Symmetry and the Mass of Gauge Vector Mesons, Phys. Rev. Lett. 13, 321 (1964); P. W. Higgs, Broken symmetries, massless particles and gauge fields, Phys. Lett. 12, 132 (1964); Broken Symmetries and the Masses of Gauge Bosons, Phys. Rev. Lett. 13, 508 (1964); G. S. Guralnik, C. R. Hagen, and T. W. B. Kibble, Global Conservation Laws and Massless Particles, 13, 585 (1964).
  2. G. Aad et al. (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, 1 (2012).
  3. S. Chatrchyan et al. (CMS Collaboration), Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Phys. Lett. B 716, 30 (2012).
  4. M. Duhrssen, S. Heinemeyer, H. Logan, D. Rainwater, G. Weiglein, and D. Zeppenfeld, Extracting Higgs boson couplings from CERN LHC data, Phys. Rev. D 70, 113009 (2004); B. A. Dobrescu and J. D. Lykken, Coupling spans of the Higgs-like boson, J. High Energy Phys. 02 (2013) 073; P. Bechtle, S. Heinemeyer, O. Stal, T. Stefaniak, and G. Weiglein, Probing the Standard Model with Higgs signal rates from the Tevatron, the LHC and a future ILC, 11 (2014) 039; J. Ellis, V. Sanz, and T. You, Complete Higgs sector constraints on dimension-6 operators, 07 (2014) 036; The effective Standard Model after LHC Run I, 03 (2015) 157.
  5. D. Lopez-Val, T. Plehn, and M. Rauch, Measuring extended Higgs sectors as a consistent free couplings model, J. High Energy Phys. 10 (2013) 134; C. Englert, A. Freitas, M. M. Mhlleitner, T. Plehn, M. Rauch, M. Spira, and K. Walz, Precision measurements of Higgs couplings: Implications for new physics scales, J. Phys. G 41, 113001 (2014).
  6. G. F. Giudice, C. Grojean, A. Pomarol, and R. Rattazzi, The strongly-interacting light Higgs, J. High Energy Phys. 06 (2007) 045.
  7. C. Englert, J. Jaeckel, V. V. Khoze, and M. Spannowsky, Emergence of the electroweak scale through the Higgs portal, J. High Energy Phys. 04 (2013) 060; M. Heikinheimo, A. Racioppi, M. Raidal, and C. Spethmann, Twin peak Higgs, Phys. Lett. B 726, 781 (2013); J. D. Clarke, R. Foot, and R. R. Volkas, Phenomenology of a very light scalar (100MeV<mh<10GeV) mixing with the SM Higgs, J. High Energy Phys. 02 (2014) 123; A. Farzinnia and J. Ren, Higgs partner searches and dark matter phenomenology in classically scale invariant Higgs sector, Phys. Rev. D 90, 015019 (2014).
  8. B. Bellazzini, C. Csaki, J. Hubisz, J. Serra, and J. Terning, Composite Higgs sketch, J. High Energy Phys. 11 (2012) 003.
  9. G. Cacciapaglia, C. Csaki, G. Marandella, and J. Terning, The gaugephobic Higgs, J. High Energy Phys. 02 (2007) 036; J. Galloway, B. McElrath, J. McRaven, and J. Terning, Gaugephobic Higgs signals at the LHC, 11 (2009) 031.
  10. J. M. Cornwall, D. N. Levin, and G. Tiktopoulos, Uniqueness of Spontaneously Broken Gauge Theories, Phys. Rev. Lett. 30, 1268 (1973); 31, 572(E) (1973); Derivation of gauge invariance from high-energy unitarity bounds on the s matrix, Phys. Rev. D 10, 1145 (1974); 11, 972(E) (1975).
  11. V. D. Barger, K.-m. Cheung, T. Han, and D. Zeppenfeld, Single forward jet tagging and central jet vetoing to identify the leptonic WW decay mode of a heavy Higgs boson, Phys. Rev. D 44, 2701 (1991); 48, 5444(E) (1993); J. Bagger, V. D. Barger, K.-m. Cheung, J. F. Gunion, T. Han, G. A. Ladinsky, R. Rosenfeld, and C.-P. Yuan, CERN LHC analysis of the strongly interacting WW system: Gold-plated modes, 52, 3878 (1995); D. L. Rainwater and D. Zeppenfeld, Observing HW*W*e±μpT in weak boson fusion with dual forward jet tagging at the LHC, 60, 113004 (1999); 61, 099901(E) (2000); N. Kauer, T. Plehn, D. L. Rainwater, and D. Zeppenfeld, HW+W as the discovery mode for a light Higgs boson, Phys. Lett. B 503, 113 (2001); C. Englert, B. Jager, M. Worek, and D. Zeppenfeld, Observing strongly interacting vector boson systems at the CERN Large Hadron Collider, Phys. Rev. D 80, 035027 (2009).
  12. A. Ballestrero, D. B. Franzosi, L. Oggero, and E. Maina, Vector boson scattering at the LHC: Counting experiments for unitarized models in a full six fermion approach, J. High Energy Phys. 03 (2012) 031; P. Borel, R. Franceschini, R. Rattazzi, and A. Wulzer, Probing the scattering of equivalent electroweak bosons, 06 (2012) 122; A. Freitas and J. S. Gainer, High energy WW scattering at the LHC with the matrix element method, Phys. Rev. D 88, 017302 (2013).
  13. C. Englert and M. Spannowsky, Limitations and opportunities of off-shell coupling measurements, Phys. Rev. D 90, 053003 (2014); A. Biekoetter, A. Knochel, M. Kraemer, D. Liu, and F. Riva, Vices and virtues of Higgs EFTs at large energy, 91, 055029 (2015).
  14. B. Grzadkowski, M. Iskrzynski, M. Misiak, and J. Rosiek, Dimension-six terms in the Standard Model Lagrangian, J. High Energy Phys. 10 (2010) 085.
  15. A. Birkedal, K. Matchev, and M. Perelstein, Collider Phenomenology of the Higgsless Models, Phys. Rev. Lett. 94, 191803 (2005).
  16. C. Csaki, C. Grojean, H. Murayama, L. Pilo, and J. Terning, Gauge theories on an interval: Unitarity without a Higgs, Phys. Rev. D 69, 055006 (2004); C. Csaki, C. Grojean, L. Pilo, and J. Terning, Towards a Realistic Model of Higgsless Electroweak Symmetry Breaking, Phys. Rev. Lett. 92, 101802 (2004); C. Csaki, J. Hubisz, and P. Meade, TASI lectures on electroweak symmetry breaking from extra dimensions, arXiv:hep-ph/0510275.
  17. G. Bhattacharyya, D. Das, and P. B. Pal, Modified Higgs couplings and unitarity violation, Phys. Rev. D 87, 011702 (2013).
  18. S. Chatrchyan et al. (CMS Collaboration), Search for anomalous production of events with three or more leptons in pp collisions at s=8TeV, Phys. Rev. D 90, 032006 (2014); G. Aad et al. (ATLAS Collaboration), Search for supersymmetry in events containing a same-flavour opposite-sign dilepton pair, jets, and large missing transverse momentum in s=8TeV pp collisions with the ATLAS detector, arXiv:1503.03290; S. Chatrchyan et al. (CMS Collaboration), Report No. CMS-PAS-HIG-14-008, 2015; (CMS Collaboration)Report No. CMS-PAS-EXO-12-041, 2014.
  19. A. Alboteanu, W. Kilian, and J. Reuter, Resonances and unitarity in weak boson scattering at the LHC, J. High Energy Phys. 11 (2008) 010.
  20. T. Binoth and J. J. van der Bij, Influence of strongly coupled, hidden scalars on Higgs signals, Z. Phys. C 75, 17 (1997); M. Bowen, Y. Cui, and J. D. Wells, Narrow trans-TeV Higgs bosons and Hhh decays: Two LHC search paths for a hidden sector Higgs boson, J. High Energy Phys. 03 (2007) 036; C. Englert, T. Plehn, D. Zerwas, and P. M. Zerwas, Exploring the Higgs portal, Phys. Lett. B 703, 298 (2011); E. Weihs and J. Zurita, Dark Higgs models at the 7 TeV LHC, J. High Energy Phys. 02 (2012) 041.
  21. S. Godfrey and K. Moats, Exploring Higgs triplet models via vector boson scattering at the LHC, Phys. Rev. D 81, 075026 (2010); R. Killick, K. Kumar, and H. E. Logan, Learning what the Higgs boson is mixed with, 88, 033015 (2013); C. Englert, E. Re, and M. Spannowsky, Pinning down Higgs triplets at the LHC, 88, 035024 (2013); C. W. Chiang, A. L. Kuo, and K. Yagyu, Enhancements of weak gauge boson scattering processes at the CERN LHC, J. High Energy Phys. 10 (2013) 072.
  22. M. S. Chanowitz, M. A. Furman, and I. Hinchliffe, Weak interactions of ultraheavy fermions, Phys. Lett. 78B, 285 (1978); Weak interactions of ultraheavy fermions. 2, Nucl. Phys. B153, 402 (1979).
  23. H.-J. He, Y.-P. Kuang, Y.-H. Qi, B. Zhang, A. Belyaev, R. S. Chivukula, N. D. Christensen, A. Pukhov, and E. H. Simmons, CERN LHC signatures of new gauge bosons in minimal Higgsless model, Phys. Rev. D 78, 031701 (2008); T. Ohl and C. Speckner, Production of almost fermiophobic gauge bosons in the minimal Higgsless model at the LHC, 78, 095008 (2008).
  24. D. Pappadopulo, A. Thamm, R. Torre, and A. Wulzer, Heavy vector triplets: Bridging theory and data, J. High Energy Phys. 09 (2014) 060.
  25. V. D. Barger, R. J. N. Phillips, and D. Zeppenfeld, Mini-jet veto: A tool for the heavy Higgs search at the LHC, Phys. Lett. B 346, 106 (1995); J. R. Andersen, K. Arnold, and D. Zeppenfeld, Azimuthal angle correlations for Higgs boson plus multi-jet events, J. High Energy Phys. 06 (2010) 091; J. R. Andersen, C. Englert, and M. Spannowsky, Extracting precise Higgs couplings by using the matrix element method, Phys. Rev. D 87, 015019 (2013).
  26. P. Achard et al. (L3 Collaboration), Study of the W+Wγ process and limits on anomalous quartic gauge boson couplings at LEP, Phys. Lett. B 527, 29 (2002); G. Abbiendi et al. (OPAL Collaboration), A study of W+Wγ events at LEP, 580, 17 (2004); J. Abdallah et al. (DELPHI Collaboration), Measurement of the e+eW+Wγ cross-section and limits on anomalous quartic gauge couplings with DELPHI, Eur. Phys. J. C 31, 139 (2003); G. Abbiendi et al. (OPAL Collaboration), Constraints on anomalous quartic gauge boson couplings from νν¯γγ and qq¯γγ events at CERN LEP-2, Phys. Rev. D 70, 032005 (2004).
  27. K. Arnold, M. Bahr, G. Bozzi, F. Campanario, C. Englert, T. Figy, N. Greiner, C. Hackstein et al., vbfnlo: A parton level Monte Carlo for processes with electroweak bosons, Comput. Phys. Commun. 180, 1661 (2009).
  28. B. Jager, C. Oleari, and D. Zeppenfeld, Next-to-leading order QCD corrections to W+W production via vector-boson fusion, J. High Energy Phys. 07 (2006) 015; G. Bozzi, B. Jager, C. Oleari, and D. Zeppenfeld, Next-to-leading order QCD corrections to W+Z and WZ production via vector-boson fusion, Phys. Rev. D 75, 073004 (2007).
  29. C. Englert, B. Jager, and D. Zeppenfeld, QCD Corrections to vector-boson fusion processes in warped Higgsless models, J. High Energy Phys. 03 (2009) 060.
  30. S. Willenbrock and G. Valencia, On the definition of the Z boson mass, Phys. Lett. B 259, 373 (1991); R. G. Stuart, Gauge invariance, analyticity and physical observables at the Z0 resonance, 262, 113 (1991); U. Baur and D. Zeppenfeld, Finite Width Effects and Gauge Invariance in Radiative W Productions and Decay, Phys. Rev. Lett. 75, 1002 (1995); J. Papavassiliou and A. Pilaftsis, Effective Charge of the Higgs Boson, 80, 2785 (1998); Gauge invariant resummation formalism for two point correlation functions, Phys. Rev. D 54, 5315 (1996); Y. Bai and W. Y. Keung, Dips at colliders, arXiv:1407.6355.
  31. M. Bahr, S. Gieseke, M. A. Gigg, D. Grellscheid, K. Hamilton, O. Latunde-Dada, S. Platzer, P. Richardson et al., herwig++ physics and manual, Eur. Phys. J. C 58, 639 (2008).
  32. M. L. Mangano, M. Moretti, F. Piccinini, R. Pittau, and A. D. Polosa, alpgen, a generator for hard multiparton processes in hadronic collisions, J. High Energy Phys. 07 (2003) 001.
  33. G. Aad et al. (ATLAS Collaboration), Report No. ATL-PHYS-PUB-2013-004, 2013.
  34. M. Cacciari, G. P. Salam, and G. Soyez, The anti-kt jet clustering algorithm, J. High Energy Phys. 04 (2008) 063.
  35. S. Willenbrock and G. Valencia, On the definition of the Z boson mass, Phys. Lett. B 259, 373 (1991); R. G. Stuart, Gauge invariance, analyticity and physical observables at the Z0 resonance, 262, 113 (1991); M. Nowakowski and A. Pilaftsis, On gauge invariance of Breit-Wigner propagators, Z. Phys. C 60, 121 (1993); U. Baur and D. Zeppenfeld, Finite Width Effects and Gauge Invariance in Radiative W Productions and Decay, Phys. Rev. Lett. 75, 1002 (1995).
  36. G. Aad et al. (ATLAS Collaboration), Search for Wtbqqbb decays in pp collisions at s=8TeV with the ATLAS detector, Eur. Phys. J. C 75, 165 (2015); , Search for Wtb¯ in the lepton plus jets final state in proton-proton collisions at a centre-of-mass energy of s=8TeV with the ATLAS detector, Phys. Lett. B 743, 235 (2015).
  37. S. Chatrchyan et al. (CMS Collaboration), Search for Wtb decays in the lepton + jets final state in pp collisions at s=8TeV, J. High Energy Phys. 05 (2014) 108; V. Khachatryan et al. (CMS Collaboration), Search for physics beyond the standard model in final states with a lepton and missing transverse energy in proton-proton collisions at s=8TeV, Phys. Rev. D 91, 092005 (2015).
  38. G. Aad et al. ATLAS Collaboration, Report No. ATLAS-CONF-2015-009, 2015.
  39. S. Chatrchyan et al. CMS Collaboration, Report No. CMS-PAS-B2G-12-007, 2014.
  40. S. Chatrchyan et al. CMS Collaboration, Reports No. CMS-EXO-13-009 and No. CMS-EXO-12-024, 2014.
  41. G. Aad et al. (ATLAS Collaboration), Search for resonant diboson production in the ℓℓqq¯ final state in pp collisions at s=8TeV with the ATLAS detector, Eur. Phys. J. C 75, 69 (2015); Search for production of WW/WZ resonances decaying to a lepton, neutrino and jets in pp collisions at s=8TeV with the ATLAS detector, 75, 209 (2015); Search for high-mass diboson resonances with boson-tagged jets in proton-proton collisions at s=8TeV with the ATLAS detector, arXiv:1506.00962.

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