Two component dark matter: a possible explanation of 130 GeV γ-ray line from the galactic centre

Recently there has been a hint of a gamma-ray line at 130 GeV originated from the galactic centre after the analysis of the Fermi-LAT satellite data. Being monochromatic in nature, it rules out the possibility of having its astrophysical origin and there has been a speculation that this line could be originated from dark matter annihilation. In this work, we propose a two component dark matter scenario where an extension of the Standard Model by an inert Higgs doublet and a gauge singlet scalar concocted with Z{sub 2} × Z'{sub 2} symmetry, is considered. We find that our scenario can not only explain the 130 GeV gamma-ray line through dark matter annihilation but also produce the correct dark matter relic density. We have used the Standard Model Higgs mass around 125 GeV as intimated by the LHC data.

[1]  D. Borah,et al.  Inert doublet dark matter with strong electroweak phase transition , 2012, 1204.4722.

[2]  Are Lines From Unassociated Gamma-Ray Sources Evidence For Dark Matter Annihilation? , 2012, 1208.0828.

[3]  J. Chiang,et al.  Fermi LAT search for dark matter in gamma-ray lines and the inclusive photon spectrum , 2012, Physical Review D.

[4]  G. M. Pruna,et al.  Phenomenology of charged scalars in the CP-violating inert-doublet model , 2013, 1302.3713.

[5]  A. Hektor,et al.  Fermi 130 GeV gamma-ray excess and dark matter annihilation in sub-haloes and in the Galactic centre , 2012, 1205.1045.

[6]  U. Washington,et al.  The inner structure of ΛCDM haloes – III. Universality and asymptotic slopes , 2003, astro-ph/0311231.

[7]  A. Goudelis,et al.  Dark matter in the inert doublet model after the discovery of a Higgs-like boson at the LHC , 2013, 1303.3010.

[8]  L. Lopez-Honorez,et al.  A new viable region of the inert doublet model , 2010, 1011.1411.

[9]  D. Majumdar,et al.  Real gauge singlet scalar extension of the Standard Model: A possible candidate for cold dark matter , 2011, 1102.3024.

[10]  D. Das,et al.  A 130 GeV photon line from dark matter annihilation in the NMSSM , 2012, 1206.2639.

[11]  M. Dolan,et al.  Neutralino dark matter and the Fermi gamma-ray lines , 2012, 1211.5154.

[12]  A. Boyarsky,et al.  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 , 2012, 1205.4700.

[13]  M. Tytgat,et al.  WIMP dark matter, Higgs exchange and DAMA , 2008, 0808.0255.

[14]  J. Chiang,et al.  THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION , 2009, 0902.1089.

[15]  F. Ling,et al.  Light scalar WIMP through the Higgs portal and CoGeNT , 2010, 1003.2595.

[16]  G. Aldazabal,et al.  U-dual fluxes and Generalized Geometry , 2010, 1007.5509.

[17]  A. Hektor,et al.  Fermi-LAT gamma-ray signal from Earth limb, systematic detector effects and their implications for the 130 GeV gamma-ray excess , 2012, 1209.4548.

[18]  R. Young,et al.  Dark matter, constrained minimal supersymmetric standard model, and lattice QCD. , 2009, Physical review letters.

[19]  Richard J. K. Taylor,et al.  Precise determination of the Z resonance parameters at LEP: "Zedometry" , 2001 .

[20]  Paul Langacker,et al.  CERN LHC phenomenology of an extended standard model with a real scalar singlet , 2007, 0706.4311.

[21]  X. He,et al.  The simplest dark-matter model, CDMS II results, and Higgs detection at LHC , 2009, 0912.4722.

[22]  E. Kolb,et al.  Reopening the window on charged dark matter , 2008, 0809.0436.

[23]  Z. Trocsanyi,et al.  t $ \bar{\mathrm{t}} $ W± + t $ \bar{\mathrm{t}} $ Z hadroproduction at NLO accuracy in QCD with Parton Shower and Hadronization effects , 2012, 1208.2665.

[24]  P. Gondolo,et al.  Neutralino relic density including coannihilations , 1997 .

[25]  W. Buchmuller,et al.  Decaying vs Annihilating Dark Matter in Light of a Tentative Gamma-Ray Line , 2012, 1206.7056.

[26]  Myeonghun Park,et al.  Fermi Gamma Ray Line at 130 GeV from Axion-Mediated Dark Matter , 2012, 1205.4675.

[27]  M. Halpern,et al.  SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP *) OBSERVATIONS: SKY MAPS, SYSTEMATIC ERRORS, AND BASIC RESULTS , 2011 .

[28]  G. Senjanovic,et al.  Inert Doublet Dark Matter and Mirror/Extra Families after Xenon100 , 2011, 1105.4611.

[29]  M. Buckley,et al.  Implications of a 130 GeV gamma-ray line for dark matter , 2012, 1205.6811.

[30]  P. Salucci,et al.  The dark matter density at the Sun’s location , 2010, 1003.3101.

[31]  Significant gamma lines from inert Higgs dark matter. , 2007, Physical review letters.

[32]  V. M. Ghete,et al.  Search for heavy bottom-like quarks in 4.9 fb−1 of pp collisions at $ \sqrt {s} = 7 $ TeV , 2012 .

[33]  Xiaofang Han,et al.  130 GeV gamma-ray line and enhancement of h→γγ in the Higgs triplet model plus a scalar dark matter , 2012, 1209.0376.

[34]  Jong-Chul Park,et al.  Assisted freeze-out , 2011, 1112.4491.

[35]  O. Bertolami,et al.  Self-interacting dark matter and the Higgs boson , 2000 .

[36]  G. Vertongen,et al.  e+ and p̄ from inert doublet model dark matter , 2009, 0901.2556.

[37]  Jinmian Li,et al.  Brightening the (130 GeV) Gamma-Ray Line , 2012, 1206.2863.

[38]  Nicola De Filippis,et al.  Search for charged Higgs bosons : combined results using LEP data , 2013 .

[39]  E. Dudas,et al.  Extra U(1) as natural source of a monochromatic gamma ray line , 2012, 1205.1520.

[40]  J. Edsjo,et al.  Inert Doublet Model and LEP II Limits , 2008, 0810.3924.

[41]  S. Kraml,et al.  The number density of a charged relic , 2008, 0807.0211.

[42]  Yamagata,et al.  Search for anomalously heavy hydrogen in deep sea water at 4000 m. , 1993, Physical review. D, Particles and fields.

[43]  R. Barbieri,et al.  Dark Matter Neutralinos in Supergravity Theories , 1989 .

[44]  Mario Kadastik,et al.  PPPC 4 DM ID: a poor particle physicist cookbook for dark matter indirect detection , 2010, 1012.4515.

[45]  R. Young,et al.  Dark Matter, the MCSSM and lattice QCD , 2009, 0907.4177.

[46]  Dark matter as the signal of grand unification , 2009 .

[47]  D.R.T. Jones,et al.  Bounds on scalar masses in two Higgs doublet models , 2009, 0903.2856.

[48]  Ernest Ma.  Verifiable radiative seesaw mechanism of neutrino mass and dark matter , 2006 .

[49]  N. Mirabal.  The dark knight falters. , 2012, 1208.1693.

[50]  E Aprile,et al.  Dark matter results from 225 live days of XENON100 data. , 2012, Physical review letters.

[51]  D. Whiteson.  Disentangling instrumental features of the 130 GeV Fermi line , 2012, 1208.3677.

[52]  S. Chakraborty,et al.  Constraining scalar singlet dark matter with CDMS, XENON and DAMA and prediction for direct detection rates , 2010, 1003.0809.

[53]  D O Caldwell,et al.  Dark Matter Search Results from the CDMS II Experiment , 2009, Science.

[54]  Christoph Weniger,et al.  A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope , 2012, 1204.2797.

[55]  Y. Mambrini.  Higgs searches and singlet scalar dark matter: Combined constraints from XENON 100 and the LHC , 2011, 1108.0671.

[56]  D. Finkbeiner,et al.  Is the 130 GeV line real? A search for systematics in the Fermi-LAT data , 2012, 1209.4562.

[57]  Mcdonald.  Gauge singlet scalars as cold dark matter. , 1994, Physical review. D, Particles and fields.

[58]  D. Finkbeiner,et al.  Strong Evidence for Gamma-ray Line Emission from the Inner Galaxy , 2012, 1206.1616.

[59]  D. Finkbeiner,et al.  Double Gamma-ray Lines from Unassociated Fermi-LAT Sources , 2012, 1207.7060.

[60]  J. Cline.  130 GeV dark matter and the Fermi gamma-ray line , 2012, 1205.2688.

[61]  K. Schmidt-Hoberg,et al.  Enhanced diphoton rates at Fermi and the LHC , 2012, 1211.2835.

[62]  D. Finkbeiner,et al.  Closing in on the Fermi Line with a New Observation Strategy , 2013, 1305.4710.

[63]  S. Profumo,et al.  Singlet scalar dark matter: Monochromatic gamma rays and metastable vacua , 2010, 1009.5377.

[64]  M. Tytgat,et al.  Neutrinos from Inert Doublet dark matter , 2009, 0901.1750.

[65]  Riccardo Barbieri,et al.  Improved naturalness with a heavy Higgs boson: An alternative road to CERN LHC physics , 2006, hep-ph/0603188.

[66]  J. Einasto.  On the Construction of a Composite Model for the Galaxy and on the Determination of the System of Galactic Parameters , 1965 .

[67]  C. Yaguna.  Gamma rays from the annihilation of singlet scalar dark matter. , 2008, 0810.4267.

[68]  S. Park,et al.  Radiatively decaying scalar dark matter through U(1) mixings and the Fermi 130 GeV gamma-ray line , 2012, 1207.4981.

[69]  X. He,et al.  Constraints on scalar dark matter from direct experimental searches , 2008, 0811.0658.

[70]  Aleph,et al.  Search for Charged Higgs bosons: Combined Results Using LEP Data , 2013 .

[71]  Wan-lei Guo,et al.  The real singlet scalar dark matter model , 2010, 1006.2518.

[72]  Xiaoyuan Huang,et al.  Fermi LAT Search for Internal Bremsstrahlung Signatures from Dark Matter Annihilation , 2012, 1203.1312.

[73]  R. Catena,et al.  A novel determination of the local dark matter density , 2009, 0907.0018.

[74]  J. Wudka,et al.  Multipartite dark matter , 2007, 0711.3881.

[75]  A. Albert,et al.  Search for gamma-ray spectral lines with the Fermi Large Area Telescope and dark matter implications , 2013, 1305.5597.

[76]  A. Hektor,et al.  EVIDENCE FOR INDIRECT DETECTION OF DARK MATTER FROM GALAXY CLUSTERS IN FERMI γ-RAY DATA , 2012, 1207.4466.

[77]  The minimal model of nonbaryonic dark matter: A singlet scalar , 2000, hep-ph/0011335.

[78]  F. Ling,et al.  IDM & iDM or the inert doublet model and inelastic dark matter , 2009, 0907.0430.

[79]  Jong-Chul Park,et al.  130 GeV Fermi gamma-ray line from dark matter decay , 2012, 1205.4151.

[80]  D. Seckel,et al.  Three exceptions in the calculation of relic abundances. , 1991, Physical review. D, Particles and fields.

[81]  J. Shelton,et al.  Gamma lines without a continuum: thermal models for the Fermi-LAT 130 GeV Gamma line , 2012, 1208.4100.

[82]  Kiwoon Choi,et al.  Dirac right-handed sneutrino dark matter and its signature in the gamma-ray lines , 2012, 1205.3276.

[83]  Ernest Ma,et al.  Observing the dark scalar doublet and its impact on the standard-model Higgs boson at colliders , 2007, 0708.2939.

[84]  Carlos E. Yaguna,et al.  The inert doublet model of dark matter revisited , 2010, 1003.3125.

[85]  B. Paul,et al.  Final results of the EDELWEISS-II WIMP search using a 4-kg array of cryogenic germanium detectors with interleaved electrodes , 2011, 1103.4070.

[86]  S. White,et al.  A Universal Density Profile from Hierarchical Clustering , 1996, astro-ph/9611107.

[87]  Ryszard S. Romaniuk,et al.  Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC , 2012 .

[88]  M. Kadastik,et al.  Matter parity as the origin of scalar Dark Matter , 2009, 0903.2475.