Abstract
We consider axion-mediated dark matter models motivated by Fermi gamma ray line at 130 GeV, where an axion-like scalar couples to a singlet Dirac fermion dark matter (DM) so its anomaly interactions with electroweak gauge bosons allow the DM to annihilate into monochromatic photon(s). In these models, extra vector-like leptons generate the necessary anomaly interactions for the axion and can also modify the Higgs-to-diphoton rate by their Yukawa couplings to the SM Higgs boson. We can distinguish models by the branching fraction of the DM annihilation into a photon pair, favoring the model with a triplet fermion. From the condition that the lighter charged extra lepton must be heavier than dark matter for no tree-level DM annihilations, we also show that the ratio of Higgs-to-diphoton rate to the SM value is constrained by vacuum stability to 1.4 (1.5) for the cutoff scale of 10 (1) TeV.
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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 [arXiv: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 [arXiv:1207.7235] [INSPIRE].
LAT collaboration, W. Atwood et al., The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission, Astrophys. J. 697 (2009) 1071 [arXiv:0902.1089] [INSPIRE].
A. Abdo et al., Fermi LAT search for photon lines from 30 to 200 GeV and dark matter implications, Phys. Rev. Lett. 104 (2010) 091302 [arXiv:1001.4836] [INSPIRE].
Fermi-LAT collaboration, M. Ackermann et al., Constraining dark matter models from a combined analysis of Milky Way satellites with the Fermi Large Area Telescope, Phys. Rev. Lett. 107 (2011) 241302 [arXiv:1108.3546] [INSPIRE].
LAT collaboration, M. Ackermann et al., Fermi LAT search for dark matter in gamma-ray lines and the inclusive photon spectrum, Phys. Rev. D 86 (2012) 022002 [arXiv:1205.2739] [INSPIRE].
C. Weniger, A tentative gamma-ray line from dark matter annihilation at the Fermi Large Area Telescope, JCAP 08 (2012) 007 [arXiv:1204.2797] [INSPIRE].
T. Bringmann, X. Huang, A. Ibarra, S. Vogl and C. Weniger, Fermi LAT search for internal bremsstrahlung signatures from dark matter annihilation, JCAP 07 (2012) 054 [arXiv:1203.1312] [INSPIRE].
E. Tempel, A. Hektor and M. Raidal, Fermi 130 GeV gamma-ray excess and dark matter annihilation in sub-haloes and in the galactic centre, JCAP 09 (2012) 032 [Addendum ibid. 11 (2012) A01] [arXiv:1205.1045] [INSPIRE].
M. Su and D.P. Finkbeiner, Strong evidence for gamma-ray line emission from the inner galaxy, arXiv:1206.1616 [INSPIRE].
A. Ibarra, S. Lopez Gehler and M. Pato, Dark matter constraints from box-shaped gamma-ray features, JCAP 07 (2012) 043 [arXiv:1205.0007] [INSPIRE].
E. Dudas, Y. Mambrini, S. Pokorski and A. Romagnoni, Extra U(1) as natural source of a monochromatic gamma ray line, JHEP 10 (2012) 123 [arXiv:1205.1520] [INSPIRE].
J.M. Cline, 130 GeV dark matter and the Fermi gamma-ray line, Phys. Rev. D 86 (2012) 015016 [arXiv:1205.2688] [INSPIRE].
K.-Y. Choi and O. Seto, A Dirac right-handed sneutrino dark matter and its signature in the gamma-ray lines, Phys. Rev. D 86 (2012) 043515 [Erratum ibid. D 86 (2012) 089904] [arXiv:1205.3276] [INSPIRE].
B. Kyae and J.-C. Park, 130 GeV gamma-ray line from dark matter decay, arXiv:1205.4151 [INSPIRE].
B.S. Acharya, G. Kane, P. Kumar, R. Lu and B. Zheng, Mixed wino-axion dark matter in string/M theory and the 130 GeV gamma-line ‘signal’, arXiv:1205.5789 [INSPIRE].
M.R. Buckley and D. Hooper, Implications of a 130 GeV gamma-ray line for dark matter, Phys. Rev. D 86 (2012) 043524 [arXiv:1205.6811] [INSPIRE].
D. Das, U. Ellwanger and P. Mitropoulos, A 130 GeV photon line from dark matter annihilation in the NMSSM, JCAP 08 (2012) 003 [arXiv:1206.2639] [INSPIRE].
Z. Kang, T. Li, J. Li and Y. Liu, Brightening the (130 GeV) gamma-ray line, arXiv:1206.2863 [INSPIRE].
J.-C. Park and S.C. Park, Radiatively decaying scalar dark matter through U(1) mixings and the Fermi 130 GeV gamma-ray line, arXiv:1207.4981 [INSPIRE].
S. Tulin, H.-B. Yu and K.M. Zurek, Three exceptions for thermal dark matter with enhanced annihilation to γγ, arXiv:1208.0009 [INSPIRE].
T. Li, J.A. Maxin, D.V. Nanopoulos and J.W. Walker, A 125.5 GeV Higgs boson in F-SU(5): imminently observable proton decay, a 130 GeV gamma-ray line and SUSY multijets & light stops at the LHC8, arXiv:1208.1999 [INSPIRE].
J.M. Cline, A.R. Frey and G.D. Moore, Composite magnetic dark matter and the 130 GeV line, arXiv:1208.2685 [INSPIRE].
Y. Bai and J. Shelton, Gamma lines without a continuum: thermal models for the Fermi-LAT 130 GeV gamma line, arXiv:1208.4100 [INSPIRE].
L. Bergstrom, The 130 GeV fingerprint of right-handed neutrino dark matter, Phys. Rev. D 86 (2012) 103514 [arXiv:1208.6082] [INSPIRE].
L. Wang and X.-F. Han, 130 GeV gamma-ray line and enhancement of h → γγ in the Higgs triplet model plus a scalar dark matter, arXiv:1209.0376 [INSPIRE].
H.M. Lee, M. Park and W.-I. Park, Fermi gamma ray line at 130 GeV from axion-mediated dark matter, Phys. Rev. D 86 (2012) 103502 [arXiv:1205.4675] [INSPIRE].
A. Rajaraman, T.M.P. Tait and D. Whiteson, Two lines or not two lines? That is the question of gamma ray spectra, JCAP 09 (2012) 003 [arXiv:1205.4723] [INSPIRE].
S. Profumo and T. Linden, Gamma-ray lines in the Fermi data: is it a bubble?, JCAP 07 (2012) 011 [arXiv:1204.6047] [INSPIRE].
A. Boyarsky, D. Malyshev and O. Ruchayskiy, Spectral and spatial variations of the diffuse gamma-ray background in the vicinity of the galactic plane and possible nature of the feature at 130 GeV, arXiv:1205.4700 [INSPIRE].
PAMELA collaboration, O. Adriani et al., PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy, Phys. Rev. Lett. 105 (2010) 121101 [arXiv:1007.0821] [INSPIRE].
X. Chu, T. Hambye, T. Scarna and M.H.G. Tytgat, What if dark matter gamma-ray lines come with gluon lines?, Phys. Rev. D 86 (2012) 083521 [arXiv:1206.2279] [INSPIRE].
W. Buchmüller and M. Garny, Decaying vs annihilating dark matter in light of a tentative gamma-ray line, JCAP 08 (2012) 035 [arXiv:1206.7056] [INSPIRE].
T. Cohen, M. Lisanti, T.R. Slatyer and J.G. Wacker, Illuminating the 130 GeV gamma line with continuum photons, JHEP 10 (2012) 134 [arXiv:1207.0800] [INSPIRE].
I. Cholis, M. Tavakoli and P. Ullio, Searching for the continuum spectrum photons correlated to the 130 GeV gamma-ray line, Phys. Rev. D 86 (2012) 083525 [arXiv:1207.1468] [INSPIRE].
X.-Y. Huang, Q. Yuan, P.-F. Yin, X.-J. Bi and X.-L. Chen, Constraints on the dark matter annihilation scenario of Fermi 130 GeV γ-ray line emission by continuous gamma-rays, Milky Way halo, galaxy clusters and dwarf galaxies observations, JCAP 11 (2012) 048 [arXiv:1208.0267] [INSPIRE].
R. Laha, K.C.Y. Ng, B. Dasgupta and S. Horiuchi, Galactic center radio constraints on gamma-ray lines from dark matter annihilation, arXiv:1208.5488 [INSPIRE].
A. Joglekar, P. Schwaller and C.E.M. Wagner, Dark matter and enhanced Higgs to di-photon rate from vector-like leptons, arXiv:1207.4235 [INSPIRE].
M. Carena, I. Low and C.E.M. Wagner, Implications of a modified Higgs to diphoton decay width, JHEP 08 (2012) 060 [arXiv:1206.1082] [INSPIRE].
N. Arkani-Hamed, K. Blum, R.T. D’Agnolo and J. Fan, 2:1 for naturalness at the LHC?, arXiv:1207.4482 [INSPIRE].
L.G. Almeida, E. Bertuzzo, P.A.N. Machado and R.Z. Funchal, Does H → γγ taste like vanilla new physics?, JHEP 11 (2012) 085 [arXiv:1207.5254] [INSPIRE].
J. Kearney, A. Pierce and N. Weiner, Vectorlike fermions and Higgs couplings, arXiv:1207.7062 [INSPIRE].
S. Weinberg, Mixing angle in renormalizable theories of weak and electromagnetic interactions, Phys. Rev. D 5 (1972) 1962 [INSPIRE].
S. Dimopoulos and D.E. Kaplan, The weak mixing angle from an SU(3) symmetry at a TeV, Phys. Lett. B 531 (2002) 127 [hep-ph/0201148] [INSPIRE].
T.-j. Li and W. Liao, Weak mixing angle and the SU(3)C × SU(3) model on M4 ×S1/(Z2 ×Z2), Phys. Lett. B 545 (2002) 147 [hep-ph/0202090] [INSPIRE].
S. Dimopoulos, D.E. Kaplan and N. Weiner, Electroweak unification into a five-dimensional SU(3) at a TeV, Phys. Lett. B 534 (2002) 124 [hep-ph/0202136] [INSPIRE].
H.-D. Kim, J.E. Kim and H.M. Lee, TeV scale 5D SU(3)W unification and the fixed point anomaly cancellation with chiral split multiplets, JHEP 06 (2002) 048 [hep-th/0204132] [INSPIRE].
S.-W. Baek, P. Ko and W.-I. Park, Search for the Higgs portal to a singlet fermionic dark matter at the LHC, JHEP 02 (2012) 047 [arXiv:1112.1847] [INSPIRE].
CDF collaboration, T. Aaltonen et al., Precise measurement of the W -boson mass with the CDF II detector, Phys. Rev. Lett. 108 (2012) 151803 [arXiv:1203.0275] [INSPIRE].
D0 collaboration, V.M. Abazov et al., Measurement of the W boson mass with the D0 detector, Phys. Rev. Lett. 108 (2012) 151804 [arXiv:1203.0293] [INSPIRE].
J.R. Espinosa, C. Grojean, M. Muhlleitner and M. Trott, First glimpses at Higgs’ face, arXiv:1207.1717 [INSPIRE].
L. Lavoura and J.P. Silva, The oblique corrections from vector-like singlet and doublet quarks, Phys. Rev. D 47 (1993) 2046 [INSPIRE].
J. Baglio, A. Djouadi and R.M. Godbole, The apparent excess in the Higgs to di-photon rate at the LHC: new physics or QCD uncertainties?, Phys. Lett. B 716 (2012) 203 [arXiv:1207.1451] [INSPIRE].
H. Arason et al., Renormalization group study of the standard model and its extensions. 1. The standard model, Phys. Rev. D 46 (1992) 3945 [INSPIRE].
M. Pospelov, Particle physics catalysis of thermal big bang nucleosynthesis, Phys. Rev. Lett. 98 (2007) 231301 [hep-ph/0605215] [INSPIRE].
J. Pradler and F.D. Steffen, Implications of catalyzed BBN in the CMSSM with gravitino dark matter, Phys. Lett. B 666 (2008) 181 [arXiv:0710.2213] [INSPIRE].
S. Bailly, K. Jedamzik and G. Moultaka, Gravitino dark matter and the cosmic lithium abundances, Phys. Rev. D 80 (2009) 063509 [arXiv:0812.0788] [INSPIRE].
CMS collaboration, Search for heavy long-lived charged particles in pp collisions at \( \sqrt{s}=7\,TeV \), Phys. Lett. B 713(2012) 408 [arXiv:1205.0272] [INSPIRE].
ATLAS collaboration, Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at \( \sqrt{s}=7\,TeV \), ATLAS Note ATLAS-CONF-2012-075 (2012).
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Lee, H.M., Park, M. & Park, WI. Axion-mediated dark matter and Higgs diphoton signal. J. High Energ. Phys. 2012, 37 (2012). https://doi.org/10.1007/JHEP12(2012)037
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DOI: https://doi.org/10.1007/JHEP12(2012)037