Abstract
We consider the Higgs Lepton Flavor Violating process h → τμ, in which CMS found a 2.5 σ excess of events, from a model independent perspective, and find that it is difficult to generate this operator without also obtaining a sizeable Wilson coefficient for the dipole operators responsible for tau radiative decay, constrained by BABAR to BR(τ → μγ) < 4.4 × 10−8. We then survey a set of representative models for new physics, to determine which ones are capable of evading this problem. We conclude that, should this measurement persist as a signal, type-III Two Higgs Doublet Models and Higgs portal-like models are favored, while SUSY and Composite Higgs models are unlikely to explain it.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Particle Data Group collaboration, K.A. Olive et al., Review of Particle Physics, Chin. Phys. C 38 (2014) 090001 [INSPIRE].
CMS Collaboration, Precise determination of the mass of the Higgs boson and studies of the compatibility of its couplings with the standard model, CMS-PAS-HIG-14-009.
R. Harnik, J. Kopp and J. Zupan, Flavor Violating Higgs Decays, JHEP 03 (2013) 026 [arXiv:1209.1397] [INSPIRE].
J.L. Diaz-Cruz and J.J. Toscano, Lepton flavor violating decays of Higgs bosons beyond the standard model, Phys. Rev. D 62 (2000) 116005 [hep-ph/9910233] [INSPIRE].
G. Blankenburg, J. Ellis and G. Isidori, Flavour-Changing Decays of a 125 GeV Higgs-like Particle, Phys. Lett. B 712 (2014) 386 [arXiv:1202.5704] [INSPIRE].
CMS Collaboration, Search for Lepton Flavour Violating Decays of the Higgs Boson, CMS-PAS-HIG-14-005.
A. Falkowski, D.M. Straub and A. Vicente, Vector-like leptons: Higgs decays and collider phenomenology, JHEP 05 (2014) 092 [arXiv:1312.5329] [INSPIRE].
A. Pilaftsis, Lepton flavor nonconservation in H0 decays, Phys. Lett. B 285 (1992) 68 [INSPIRE].
M. Arana-Catania, E. Arganda and M.J. Herrero, Non-decoupling SUSY in LFV Higgs decays: a window to new physics at the LHC, JHEP 09 (2013) 160 [arXiv:1304.3371] [INSPIRE].
A. Brignole and A. Rossi, Anatomy and phenomenology of mu-tau lepton flavor violation in the MSSM, Nucl. Phys. B 701 (2004) 3 [hep-ph/0404211] [INSPIRE].
A. Arhrib, Y. Cheng and O.C.W. Kong, Comprehensive analysis on lepton flavor violating Higgs boson to μ ∓ τ ± decay in supersymmetry without R parity, Phys. Rev. D 87 (2013) 015025 [arXiv:1210.8241] [INSPIRE].
E. Arganda, M.J. Herrero, X. Marcano and C. Weiland, Imprints of massive inverse seesaw model neutrinos in lepton flavor violating Higgs boson decays, Phys. Rev. D 91 (2015) 015001 [arXiv:1405.4300] [INSPIRE].
M. Arroyo, J.L. Diaz-Cruz, E. Diaz and J.A. Orduz-Ducuara, Flavor Violating Higgs signals in the Texturized Two-Higgs Doublet Model (2HDM-Tx), arXiv:1306.2343 [INSPIRE].
D. Aristizabal Sierra and A. Vicente, Explaining the CMS Higgs flavor violating decay excess, Phys. Rev. D 90 (2014) 115004 [arXiv:1409.7690] [INSPIRE].
A. Crivellin, G. D’Ambrosio and J. Heeck, Explaining h → μ ± τ ∓ , B → K ∗ μ + μ − and B → Kμ + μ − /B → Ke + e − in a two-Higgs-doublet model with gauged L μ − L τ , Phys. Rev. Lett. 114 (2015) 151801 [arXiv:1501.00993] [INSPIRE].
J. Heeck, M. Holthausen, W. Rodejohann and Y. Shimizu, Higgs → μτ in Abelian and non-Abelian flavor symmetry models, Nucl. Phys. B 896 (2015) 281 [arXiv:1412.3671] [INSPIRE].
C.-J. Lee and J. Tandean, Lepton-Flavored Scalar Dark Matter with Minimal Flavor Violation, JHEP 04 (2015) 174 [arXiv:1410.6803] [INSPIRE].
A. Azatov, M. Toharia and L. Zhu, Higgs Mediated FCNC’s in Warped Extra Dimensions, Phys. Rev. D 80 (2009) 035016 [arXiv:0906.1990] [INSPIRE].
E. Arganda, A.M. Curiel, M.J. Herrero and D. Temes, Lepton flavor violating Higgs boson decays from massive seesaw neutrinos, Phys. Rev. D 71 (2005) 035011 [hep-ph/0407302] [INSPIRE].
B. Grzadkowski, M. Iskrzynski, M. Misiak and J. Rosiek, Dimension-Six Terms in the Standard Model Lagrangian, JHEP 10 (2010) 085 [arXiv:1008.4884] [INSPIRE].
MEG collaboration, J. Adam et al., New constraint on the existence of the μ + → e +γ decay, Phys. Rev. Lett. 110 (2013) 201801 [arXiv:1303.0754] [INSPIRE].
BaBar collaboration, B. Aubert et al., Searches for Lepton Flavor Violation in the Decays τ ± →e ±γ and τ ± → μ ±γ, Phys. Rev. Lett. 104 (2010) 021802 [arXiv:0908.2381] [INSPIRE].
R. Contino, M. Ghezzi, C. Grojean, M. Muhlleitner and M. Spira, Effective Lagrangian for a light Higgs-like scalar, JHEP 07 (2013) 035 [arXiv:1303.3876] [INSPIRE].
A. Goudelis, O. Lebedev and J.-h. Park, Higgs-induced lepton flavor violation, Phys. Lett. B 707 (2012) 369 [arXiv:1111.1715] [INSPIRE].
S. Davidson, Learning about flavour structure from tau to ell gamma and mu to e gamma?, Eur. Phys. J. C 72 (2012) 1897 [arXiv:1112.2956] [INSPIRE].
A. Celis, V. Cirigliano and E. Passemar, Model-discriminating power of lepton flavor violating τ decays, Phys. Rev. D 89 (2014) 095014 [arXiv:1403.5781] [INSPIRE].
J. Wudka, Electroweak effective Lagrangians, Int. J. Mod. Phys. A 9 (1994) 2301 [hep-ph/9406205] [INSPIRE].
S.M. Barr and A. Zee, Electric Dipole Moment of the Electron and of the Neutron, Phys. Rev. Lett. 65 (1990) 21 [Erratum ibid. 65 (1990) 2920] [INSPIRE].
L. Randall and R. Sundrum, A Large mass hierarchy from a small extra dimension, Phys. Rev. Lett. 83 (1999) 3370 [hep-ph/9905221] [INSPIRE].
G. Panico and A. Wulzer, The Discrete Composite Higgs Model, JHEP 09 (2011) 135 [arXiv:1106.2719] [INSPIRE].
S. De Curtis, M. Redi and A. Tesi, The 4D Composite Higgs, JHEP 04 (2012) 042 [arXiv:1110.1613] [INSPIRE].
G. Burdman, N. Fonseca and L. de Lima, Full-hierarchy Quiver Theories of Electroweak Symmetry Breaking and Fermion Masses, JHEP 01 (2013) 094 [arXiv:1210.5568] [INSPIRE].
C. Csáki, Y. Grossman, P. Tanedo and Y. Tsai, Warped penguin diagrams, Phys. Rev. D 83 (2011) 073002 [arXiv:1004.2037] [INSPIRE].
K. Agashe and R. Contino, Composite Higgs-Mediated FCNC, Phys. Rev. D 80 (2009) 075016 [arXiv:0906.1542] [INSPIRE].
G. Burdman, L. de Lima, C.S. Machado and R.D. Matheus, Full-hierarchy Quiver Theories of Electroweak Symmetry Breaking and Fermion Masses, in preparation.
K. Agashe, R. Contino and A. Pomarol, The Minimal composite Higgs model, Nucl. Phys. B 719 (2005) 165 [hep-ph/0412089] [INSPIRE].
M. Redi, Leptons in Composite MFV, JHEP 09 (2013) 060 [arXiv:1306.1525] [INSPIRE].
A. Broggio, E.J. Chun, M. Passera, K.M. Patel and S.K. Vempati, Limiting two-Higgs-doublet models, JHEP 11 (2014) 058 [arXiv:1409.3199] [INSPIRE].
A. Celis, V. Ilisie and A. Pich, Towards a general analysis of LHC data within two-Higgs-doublet models, JHEP 12 (2013) 095 [arXiv:1310.7941] [INSPIRE].
W. Altmannshofer, S. Gori, A.L. Kagan, L. Silvestrini and J. Zupan, Uncovering Mass Generation Through Higgs Flavor Violation, arXiv:1507.07927 [INSPIRE].
X. Liu, L. Bian, X.-Q. Li and J. Shu, h → μτ , muon g−2 and a possible interpretation of the Galactic Center gamma ray excess, arXiv:1508.05716 [INSPIRE].
A. Crivellin, J. Heeck and P. Stoffer, A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model, arXiv:1507.07567 [INSPIRE].
F.J. Botella, G.C. Branco, M. Nebot and M.N. Rebelo, Flavour Changing Higgs Couplings in a Class of Two Higgs Doublet Models, arXiv:1508.05101 [INSPIRE].
A. Crivellin, A. Kokulu and C. Greub, Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure, Phys. Rev. D 87 (2013) 094031 [arXiv:1303.5877] [INSPIRE].
C. Hamzaoui, M. Pospelov and M. Toharia, Higgs mediated FCNC in supersymmetric models with large tan Beta, Phys. Rev. D 59 (1999) 095005 [hep-ph/9807350] [INSPIRE].
K.S. Babu and C.F. Kolda, Higgs mediated B 0 → μ + μ − in minimal supersymmetry, Phys. Rev. Lett. 84 (2000) 228 [hep-ph/9909476] [INSPIRE].
A. Brignole and A. Rossi, Lepton flavor violating decays of supersymmetric Higgs bosons, Phys. Lett. B 566 (2003) 217 [hep-ph/0304081] [INSPIRE].
V. Silveira and A. Zee, Scalar phantoms, Phys. Lett. B 161 (1985) 136 [INSPIRE].
J. McDonald, Gauge singlet scalars as cold dark matter, Phys. Rev. D 50 (1994) 3637 [hep-ph/0702143] [INSPIRE].
C.P. Burgess, M. Pospelov and T. ter Veldhuis, The Minimal model of nonbaryonic dark matter: A Singlet scalar, Nucl. Phys. B 619 (2001) 709 [hep-ph/0011335] [INSPIRE].
V. Barger, P. Langacker, M. McCaskey, M. Ramsey-Musolf and G. Shaughnessy, Complex singlet extension of the standard model, Phys. Rev. D 79 (2009) 015018 [arXiv:0811.0393] [INSPIRE].
J.M. Cline, K. Kainulainen, P. Scott and C. Weniger, Update on scalar singlet dark matter, Phys. Rev. D 88 (2013) 055025 [arXiv:1306.4710] [INSPIRE].
M. Duch, B. Grzadkowski and J. Wudka, Classification of effective operators for interactions between the Standard Model and dark matter, JHEP 05 (2015) 116 [arXiv:1412.0520] [INSPIRE].
Y. Hamada, H. Kawai and K.-y. Oda, Predictions on mass of Higgs portal scalar dark matter from Higgs inflation and flat potential, JHEP 07 (2014) 026 [arXiv:1404.6141] [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].
ATLAS collaboration, Search for lepton-flavour-violating H → μτ decays of the Higgs boson with the ATLAS detector, arXiv:1508.03372 [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: 1501.06923
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
de Lima, L., Machado, C.S., Matheus, R.D. et al. Higgs flavor violation as a signal to discriminate models. J. High Energ. Phys. 2015, 74 (2015). https://doi.org/10.1007/JHEP11(2015)074
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP11(2015)074