Accidental Dark Matter: Case in the Scale Invariant Local $B-L$ Models

Abstract

We explore the idea of accidental dark matter (aDM) stability in the scale invariant local $U(1{)}_{B-L}$ model, which is a theory for neutrino and at the same time radiatively breaks scale invariance via quantum mechanical dynamics in the $U(1{)}_{B-L}$ sector. A real singlet scalar can be accidental DM with an accidental $Z_2$, by virtue of both extended symmetries. A $U(1{)}_{B-L}$ charged complex scalar can also be a viable accidental DM due to an accidental (or remanent) $Z_3$. They can reproduce correct relic density via the annihilations through the conventional Higgs portal or dark Higgs portal. The dark Higgs portal scenario is in tension with the LHC bound on $Z_{B-L}$, and only heavy DM of a few TeVs can have correct relic density. In particular, DM may trigger spontaneous breaking of scale Invariance (SISB). The situation is relaxed significantly in the $Z_3$ case due to the effective semi-annihilation mode and then light DM can be accommodated easily. In addition, the $Z_3$ model can accommodate the GeV scale $\gamma -$ray excess from the galactic center (GC) via semi-annihilation into pseudo Goldstone boson (PGSB). The best fit is achieved at a DM about 52 GeV, with annihilation cross section consistent with the thermal relic density. The invisible Higgs branching ratio is negligible because the Higgs portal quartic coupling is very small ${\lambda }_{h\varphi }\lesssim 10^{-3}$.

Journal version, including more remarks in particular about the the condition for the accidental Z2 surviving; 29 pages

References in corpus (20)

• Background model systematics for the Fermi GeV excess
• Conformal Symmetry and the Standard Model
• Unbroken B-L Symmetry
• Scale invariant extension of the standard model with strongly interacting hidden sector
• Electroweak Higgs as a pseudo-Goldstone boson of broken scale invariance
• Shadow Higgs from a scale-invariant hidden $U(1{)}_s$ model
• The Minimal Scale Invariant Extension of the Standard Model
• Search for heavy narrow dilepton resonances in pp collisions at sqrt(s) = 7 TeV and sqrt(s) = 8 TeV
• Closing in on singlet scalar dark matter: LUX, invisible Higgs decays and gamma-ray lines
• Z_3 Dark Matter and Two-Loop Neutrino Mass
• Neutrino mass in radiatively-broken scale-invariant models
• A weighty interpretation of the Galactic Centre excess
• Dynamical generation of the weak and Dark Matter scales from strong interactions
• Galactic center $\gamma$-ray excess in hidden sector DM models with dark gauge symmetries: local $Z_3$ symmetry as an example
• Softened Gravity and the Extension of the Standard Model up to Infinite Energy
• Neutrino Masses and Conformal Electro-Weak Symmetry Breaking
• Majorana dark matter in a classically scale invariant model
• Higgs Partner Searches and Dark Matter Phenomenology in a Classically Scale Invariant Higgs Boson Sector
• Galactic Centre GeV Photons from Dark Technicolor
• Higgs vacua with potential barriers

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