Abstract
In many extensions of the standard model, there exist a few extra Higgs bosons. Suppose a heavy neutral Higgs boson H is discovered at the LHC, one could then investigate CP and \( \mathrm{C}\mathrm{P}\tilde{\mathrm{T}} \) properties of its couplings to a pair of Z bosons through H → ZZ → 4ℓ. We use the helicity-amplitude method to write down the most general form for the angular distributions of the four final-state leptons, which can cover the case of CP-even, -odd, and -mixed state for the Higgs boson. We figure out there are 9 types of angular observables and all the H couplings to Z bosons can be fully determined by exploiting them. A Higgs-boson mass of 260 GeV below the tt threshold is illustrated with full details. With a total of 103 events of H → ZZ → 4ℓ, one can determine the couplings up to 12-20% uncertainties.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
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 (2012) 1 [ar**v:1207.7214] [INSPIRE].
CMS collaboration, Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Phys. Lett. B 716 (2012) 30 [ar**v:1207.7235] [INSPIRE].
K. Cheung, J.S. Lee and P.-Y. Tseng, Higgs Precision (Higgcision) Era begins, JHEP 05 (2013) 134 [ar**v:1302.3794] [INSPIRE].
P.W. Higgs, Broken Symmetries and the Masses of Gauge Bosons, Phys. Rev. Lett. 13 (1964) 508 [INSPIRE].
F. Englert and R. Brout, Broken Symmetry and the Mass of Gauge Vector Mesons, Phys. Rev. Lett. 13 (1964) 321 [INSPIRE].
G.S. Guralnik, C.R. Hagen and T.W.B. Kibble, Global Conservation Laws and Massless Particles, Phys. Rev. Lett. 13 (1964) 585 [INSPIRE].
K. Cheung, J.S. Lee and P.-Y. Tseng, Higgs precision analysis updates 2014, Phys. Rev. D 90 (2014) 095009 [ar**v:1407.8236] [INSPIRE].
H.P. Nilles, Supersymmetry, Supergravity and Particle Physics, Phys. Rept. 110 (1984) 1 [INSPIRE].
H.E. Haber and G.L. Kane, The Search for Supersymmetry: Probing Physics Beyond the Standard Model, Phys. Rept. 117 (1985) 75 [INSPIRE].
J.F. Gunion, H.E. Haber, G.L. Kane and S. Dawson, The Higgs Hunter’s Guide, Addison-Wesley, Reading MA U.S.A. (1990).
K. Cheung, T.-J. Hou, J.S. Lee and E. Senaha, The Higgs Boson Sector of the Next-to-MSSM with CP-violation, Phys. Rev. D 82 (2010) 075007 [ar**v:1006.1458] [INSPIRE].
A.G. Akeroyd and M. Aoki, Single and pair production of doubly charged Higgs bosons at hadron colliders, Phys. Rev. D 72 (2005) 035011 [hep-ph/0506176] [INSPIRE].
J.S. Lee et al., CPsuperH: A Computational tool for Higgs phenomenology in the minimal supersymmetric standard model with explicit CP-violation, Comput. Phys. Commun. 156 (2004) 283 [hep-ph/0307377] [INSPIRE].
S.Y. Choi, D.J. Miller, M.M. Muhlleitner and P.M. Zerwas, Identifying the Higgs spin and parity in decays to Z pairs, Phys. Lett. B 553 (2003) 61 [hep-ph/0210077] [INSPIRE].
Y. Gao, A.V. Gritsan, Z. Guo, K. Melnikov, M. Schulze and N.V. Tran, Spin determination of single-produced resonances at hadron colliders, Phys. Rev. D 81 (2010) 075022 [ar**v:1001.3396] [INSPIRE].
S. Bolognesi et al., On the spin and parity of a single-produced resonance at the LHC, Phys. Rev. D 86 (2012) 095031 [ar**v:1208.4018] [INSPIRE].
A. Menon, T. Modak, D. Sahoo, R. Sinha and H.-Y. Cheng, Inferring the nature of the boson at 125-126 GeV, Phys. Rev. D 89 (2014) 095021 [ar**v:1301.5404] [INSPIRE].
T. Modak, D. Sahoo, R. Sinha, H.-Y. Cheng and T.-C. Yuan, Disentangling the Spin-Parity of a Resonance via the Gold-Plated Decay Mode, Chin. Phys. C 40 (2016) 033002 [ar**v:1408.5665] [INSPIRE].
CMS collaboration, Search for a high mass SM-like Higgs boson in the \( H\to ZZ\to \ell \ell q\overline{q} \) decay channel in CMS, ar**v:1505.03278 [INSPIRE].
CMS collaboration, CMS High mass WW and ZZ Higgs search with the complete LHC Run1 statistics, ar**v:1505.03831 [INSPIRE].
ATLAS collaboration, Search for high-mass resonances decaying into a Z boson pair in the ℓℓνν final state in pp collisions at \( \sqrt{s}=13 \) TeV with the ATLAS detector, ATLAS-CONF-2016-012 (2016) [INSPIRE].
ATLAS collaboration, Searches for heavy ZZ and ZW resonances in the ℓℓqq and ννqq final states in pp collisions at \( \sqrt{s}=13 \) TeV with the ATLAS detector, ATLAS-CONF-2016-082 (2016) [INSPIRE].
CMS collaboration, Search for a heavy scalar boson decaying into a pair of Z bosons in the 2ℓ2ν final state, CMS-PAS-HIG-16-001 (2016) [INSPIRE].
CMS collaboration, Measurements of properties of the Higgs boson and search for an additional resonance in the four-lepton final state at \( \sqrt{s}=13 \) TeV, CMS-PAS-HIG-16-033 (2016) [INSPIRE].
K. Hagiwara and D. Zeppenfeld, Helicity Amplitudes for Heavy Lepton Production in e + e − Annihilation, Nucl. Phys. B 274 (1986) 1 [INSPIRE].
S. von Buddenbrock et al., The compatibility of LHC Run 1 data with a heavy scalar of mass around 270 GeV, ar**v:1506.00612 [INSPIRE].
S. von Buddenbrock et al., Phenomenological signatures of additional scalar bosons at the LHC, Eur. Phys. J. C 76 (2016) 580 [ar**v:1606.01674] [INSPIRE].
J. Chang et al., in preparation.
ATLAS collaboration, Search for heavy ZZ resonances in the ℓ + ℓ − ℓ + ℓ − and \( {\ell}^{+}{\ell}^{-}\nu \overline{\nu} \) final states using proton-proton collisions at \( \sqrt{s}=13 \) TeV with the ATLAS detector, ATLAS-CONF-2017-058 (2017) [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: 1708.05583
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
Chang, J., Cheung, K., Lee, J.S. et al. Measuring properties of a heavy Higgs boson in the H→ZZ→4ℓ decay. J. High Energ. Phys. 2017, 53 (2017). https://doi.org/10.1007/JHEP12(2017)053
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP12(2017)053