Journal of High Energy Physics

, 2013:90 | Cite as

Higgs mixing and diphoton rate enhancement in NMSSM models

  • Kiwoon Choi
  • Sang Hui Im
  • Kwang Sik Jeong
  • Masahiro Yamaguchi
Article
First Online:
Received:
Accepted:

Abstract

We study the implications of the LHC Higgs signals on the Higgs mixing in the next-to-minimal supersymmetric standard model (NMSSM). The Higgs couplings can depart from their values in the standard model (SM) due to mixing effects. However the Higgs signal rate in the WW and ZZ channels can remain close to the SM values, as observed at the LHC, even if the SM-like Higgs boson with a mass near 125 GeV has a large singlet component. This allows to get a sizable enhancement in the Higgs to diphoton rate through the charged-higgsino loop contribution, as well as a sizable reduction of the Higgs to \( b\overline{b} \) and ττ rates through the mixing effects, with little deviation in the WW and ZZ signal rates from the SM prediction. We find that an enhancement of diphoton signals by a factor of 1.5 or more, and also a reduction of \( b\overline{b} \) and ττ signals by a factor of 0.5, can be obtained in the region of parameter space consistent with the constraints on the higgsino mass parameter and the singlet coupling to the Higgs doublets, which determine the Higgs mixing.

Keywords

Higgs Physics Supersymmetric Standard Model 
This is a preview of subscription content, log in to check access.

References

  1. [1]
    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 [arXiv:1207.7214] [INSPIRE].ADSGoogle Scholar
  2. [2]
    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 [arXiv:1207.7235] [INSPIRE].ADSGoogle Scholar
  3. [3]
    M. Maniatis, The next-to-minimal supersymmetric extension of the standard model reviewed, Int. J. Mod. Phys. A 25 (2010) 3505 [arXiv:0906.0777] [INSPIRE].MathSciNetADSCrossRefGoogle Scholar
  4. [4]
    U. Ellwanger, C. Hugonie and A.M. Teixeira, The next-to-minimal supersymmetric standard model, Phys. Rept. 496 (2010) 1 [arXiv:0910.1785] [INSPIRE].MathSciNetADSCrossRefGoogle Scholar
  5. [5]
    L.J. Hall, D. Pinner and J.T. Ruderman, A natural SUSY Higgs near 126 GeV, JHEP 04 (2012) 131 [arXiv:1112.2703] [INSPIRE].ADSCrossRefGoogle Scholar
  6. [6]
    U. Ellwanger, Enhanced di-photon Higgs signal in the next-to-minimal supersymmetric standard model, Phys. Lett. B 698 (2011) 293 [arXiv:1012.1201] [INSPIRE].ADSCrossRefGoogle Scholar
  7. [7]
    U. Ellwanger, A Higgs boson near 125 GeV with enhanced di-photon signal in the NMSSM, JHEP 03 (2012) 044 [arXiv:1112.3548] [INSPIRE].ADSCrossRefGoogle Scholar
  8. [8]
    Z. Kang, J. Li and T. Li, On naturalness of the MSSM and NMSSM, JHEP 11 (2012) 024 [arXiv:1201.5305] [INSPIRE].ADSCrossRefGoogle Scholar
  9. [9]
    V. Barger, M. Ishida and W.-Y. Keung, Flavor-tuned 125 GeV SUSY Higgs boson at the LHC: MSSM and natural SUSY tests, arXiv:1207.0779 [INSPIRE].
  10. [10]
    M. Carena, I. Low and C.E. Wagner, Implications of a modified Higgs to diphoton decay width, JHEP 08 (2012) 060 [arXiv:1206.1082] [INSPIRE].ADSCrossRefGoogle Scholar
  11. [11]
    K. Blum, R.T. D’Agnolo and J. Fan, Natural SUSY predicts: Higgs couplings, JHEP 01 (2013) 057 [arXiv:1206.5303] [INSPIRE].ADSCrossRefGoogle Scholar
  12. [12]
    A. Joglekar, P. Schwaller and C.E. Wagner, Dark matter and enhanced Higgs to di-photon rate from vector-like Leptons, JHEP 12 (2012) 064 [arXiv:1207.4235] [INSPIRE].ADSCrossRefGoogle Scholar
  13. [13]
    N. Arkani-Hamed, K. Blum, R.T. D’Agnolo and J. Fan, 2 : 1 for naturalness at the LHC?, JHEP 01 (2013) 149 [arXiv:1207.4482] [INSPIRE].ADSCrossRefGoogle Scholar
  14. [14]
    L.G. Almeida, E. Bertuzzo, P.A. Machado and R.Z. Funchal, Does H → γγ taste like vanilla new physics?, JHEP 11 (2012) 085 [arXiv:1207.5254] [INSPIRE].ADSCrossRefGoogle Scholar
  15. [15]
    J.-J. Cao, Z.-X. Heng, J.M. Yang, Y.-M. Zhang and J.-Y. Zhu, A SM-like Higgs near 125 GeV in low energy SUSY: a comparative study for MSSM and NMSSM, JHEP 03 (2012) 086 [arXiv:1202.5821] [INSPIRE].ADSCrossRefGoogle Scholar
  16. [16]
    R. Benbrik et al., Confronting the MSSM and the NMSSM with the discovery of a signal in the two photon channel at the LHC, Eur. Phys. J. C 72 (2012) 2171 [arXiv:1207.1096] [INSPIRE].ADSCrossRefGoogle Scholar
  17. [17]
    M. Carena, S. Gori, N.R. Shah and C.E. Wagner, A 125 GeV SM-like Higgs in the MSSM and the γγ rate, JHEP 03 (2012) 014 [arXiv:1112.3336] [INSPIRE].ADSCrossRefGoogle Scholar
  18. [18]
    M. Carena, S. Gori, N.R. Shah, C.E.M. Wagner and L.-T. Wang, Light stau phenomenology and the Higgs γγ rate, JHEP 07 (2012) 175 [arXiv:1205.5842] [INSPIRE].ADSCrossRefGoogle Scholar
  19. [19]
    M.R. Buckley and D. Hooper, Are there hints of light stops in recent Higgs search results?, Phys. Rev. D 86 (2012) 075008 [arXiv:1207.1445] [INSPIRE].ADSGoogle Scholar
  20. [20]
    G.F. Giudice, P. Paradisi, A. Strumia and A. Strumia, Correlation between the Higgs decay rate to two photons and the muon g − 2, JHEP 10 (2012) 186 [arXiv:1207.6393] [INSPIRE].ADSCrossRefGoogle Scholar
  21. [21]
    M.A. Ajaib, I. Gogoladze and Q. Shafi, Higgs boson production and decay: effects from light third generation and vectorlike matter, Phys. Rev. D 86 (2012) 095028 [arXiv:1207.7068] [INSPIRE].ADSGoogle Scholar
  22. [22]
    R. Sato, K. Tobioka and N. Yokozaki, Enhanced diphoton signal of the Higgs boson and the muon g − 2 in gauge mediation models, Phys. Lett. B 716 (2012) 441 [arXiv:1208.2630] [INSPIRE].ADSCrossRefGoogle Scholar
  23. [23]
    S. King, M. Muhlleitner and R. Nevzorov, NMSSM Higgs benchmarks near 125 GeV, Nucl. Phys. B 860 (2012) 207 [arXiv:1201.2671] [INSPIRE].ADSCrossRefGoogle Scholar
  24. [24]
    E. Gabrielli, K. Kannike, B. Mele, A. Racioppi and M. Raidal, Fermiophobic Higgs boson and supersymmetry, Phys. Rev. D 86 (2012) 055014 [arXiv:1204.0080] [INSPIRE].ADSGoogle Scholar
  25. [25]
    N. Haba, K. Kaneta, Y. Mimura and R. Takahashi, Enhancement of Higgs to diphoton decay width in non-perturbative Higgs model, Phys. Lett. B 718 (2013) 1441 [arXiv:1207.5102] [INSPIRE].ADSCrossRefGoogle Scholar
  26. [26]
    D.S. Alves, P.J. Fox and N.J. Weiner, Higgs signals in a type I 2HDM or with a sister Higgs, arXiv:1207.5499 [INSPIRE].
  27. [27]
    K. Schmidt-Hoberg and F. Staub, Enhanced h → γγ rate in MSSM singlet extensions, JHEP 10 (2012) 195 [arXiv:1208.1683] [INSPIRE].ADSCrossRefGoogle Scholar
  28. [28]
    H. An, T. Liu and L.-T. Wang, 125 GeV Higgs boson, enhanced di-photon rate and gauged U(1)PQ-extended MSSM, Phys. Rev. D 86 (2012) 075030 [arXiv:1207.2473] [INSPIRE].ADSGoogle Scholar
  29. [29]
    A. Delgado, G. Nardini and M. Quirós, Large diphoton Higgs rates from supersymmetric triplets, Phys. Rev. D 86 (2012) 115010 [arXiv:1207.6596] [INSPIRE].ADSGoogle Scholar
  30. [30]
    L. Basso and F. Staub, Enhancing h → γγ with staus in SUSY models with extended gauge sector, Phys. Rev. D 87 (2013) 015011 [arXiv:1210.7946] [INSPIRE].ADSGoogle Scholar
  31. [31]
    D. Carmi, A. Falkowski, E. Kuflik, T. Volansky and J. Zupan, Higgs after the discovery: a status report, JHEP 10 (2012) 196 [arXiv:1207.1718] [INSPIRE].ADSCrossRefGoogle Scholar
  32. [32]
    Y. Okada, M. Yamaguchi and T. Yanagida, Upper bound of the lightest Higgs boson mass in the minimal supersymmetric standard model, Prog. Theor. Phys. 85 (1991) 1 [INSPIRE].ADSCrossRefGoogle Scholar
  33. [33]
    Y. Okada, M. Yamaguchi and T. Yanagida, Renormalization group analysis on the Higgs mass in the softly broken supersymmetric standard model, Phys. Lett. B 262 (1991) 54 [INSPIRE].ADSCrossRefGoogle Scholar
  34. [34]
    Particle Data Group collaboration, K. Nakamura et al., Review of particle physics, J. Phys. G 37 (2010) 075021 [INSPIRE].ADSCrossRefGoogle Scholar
  35. [35]
    R. Barbieri, L.J. Hall, Y. Nomura and V.S. Rychkov, Supersymmetry without a light Higgs boson, Phys. Rev. D 75 (2007) 035007 [hep-ph/0607332] [INSPIRE].ADSGoogle Scholar
  36. [36]
    K.S. Jeong, Y. Shoji and M. Yamaguchi, Peccei-Quinn invariant extension of the NMSSM, JHEP 04 (2012) 022 [arXiv:1112.1014] [INSPIRE].ADSCrossRefGoogle Scholar
  37. [37]
    P. Gambino and M. Misiak, Quark mass effects in \( \overline{B}\to {X_s}\gamma \), Nucl. Phys. B 611 (2001) 338 [hep-ph/0104034] [INSPIRE].ADSCrossRefGoogle Scholar
  38. [38]
    C. Panagiotakopoulos and K. Tamvakis, New minimal extension of MSSM, Phys. Lett. B 469 (1999) 145 [hep-ph/9908351] [INSPIRE].ADSCrossRefGoogle Scholar
  39. [39]
    C. Panagiotakopoulos and A. Pilaftsis, Higgs scalars in the minimal nonminimal supersymmetric standard model, Phys. Rev. D 63 (2001) 055003 [hep-ph/0008268] [INSPIRE].ADSGoogle Scholar
  40. [40]
    K.J. Bae et al., Peccei-Quinn NMSSM in the light of 125 GeV Higgs, JHEP 11 (2012) 118 [arXiv:1208.2555] [INSPIRE].ADSCrossRefGoogle Scholar
  41. [41]
    LEP Working Group for Higgs boson searches, ALEPH, DELPHI, L3, OPAL collaboration, R. Barate et al., Search for the standard model Higgs boson at LEP, Phys. Lett. B 565 (2003) 61 [hep-ex/0306033] [INSPIRE].ADSGoogle Scholar
  42. [42]
    S. Mizuta and M. Yamaguchi, Coannihilation effects and relic abundance of Higgsino dominant LSP(s), Phys. Lett. B 298 (1993) 120 [hep-ph/9208251] [INSPIRE].ADSCrossRefGoogle Scholar

Copyright information

© SISSA, Trieste, Italy 2013

Authors and Affiliations

  • Kiwoon Choi
    • 1
  • Sang Hui Im
    • 1
  • Kwang Sik Jeong
    • 2
  • Masahiro Yamaguchi
    • 2
  1. 1.Department of PhysicsKAISTDaejeonKorea
  2. 2.Department of PhysicsTohoku UniversitySendaiJapan

Personalised recommendations