Two component dark matter with multi-Higgs portals

Bian, Ligong; Li, Tianjun; Shu, Jing; Wang, Xiaochuan

doi:10.1007/jhep03(2015)126

Cited by 34 publications

(18 citation statements)

References 105 publications

(153 reference statements)

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“…In the situation where solid signals come from direct detection and indirect dark matter searches, twocomponent dark matter arises as a promising framework. Several publications in the past have focused on two-or multi-component dark matter [88,[114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129][130][131][132][133].…”

Section: Mixed Dark Matter Scenariomentioning

confidence: 99%

NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model

2017

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Baryon and lepton numbers being accidental global symmetries of the Standard Model (SM), it is natural to promote them to local symmetries. However, to preserve anomaly-freedom, only combinations of B-L are viable. In this spirit, we investigate possible dark matter realizations in the context of the U (1) B−L model: (i) Dirac fermion with unbroken B-L; (ii) Dirac fermion with broken B-L; (iii) scalar dark matter; (iv) two-component dark matter. We compute the relic abundance, direct and indirect detection observables and confront them with recent results from Planck, LUX-2016, and Fermi-LAT and prospects from XENON1T. In addition to the well-known LEP bound M Z /g BL 7 TeV, we include often ignored LHC bounds using 13 TeV dilepton (dimuon + dielectron) data at next-to-leading order plus nextto-leading logarithmic accuracy. We show that, for gauge couplings smaller than 0.4, the LHC gives rise to the strongest collider limit. In particular, we find M Z /g BL > 8.7 TeV for g BL = 0.3. We conclude that the NLO+NLL corrections improve the dilepton bounds on the Z mass and that both dark matter candidates are only viable in the Z resonance region, with the parameter space for scalar dark matter being fully probed by XENON1T. Lastly, we show that one can successfully have a minimal two-component dark matter model.

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Section: Mixed Dark Matter Scenariomentioning

confidence: 99%

NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model

2017

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“…Though a single component DM is a very minimal and predictive scenario to begin with, a richer dark sector may in fact be natural given the complicated visible sector. There have been several proposals for multi-component WIMP dark matter during last few years, some of which can be found in [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51]. Going from single component to multi-component DM sector can significantly alter the direct as well as indirect detection rates for DM.…”

Section: Introductionmentioning

confidence: 99%

Type III seesaw for neutrino masses in U(1)B−L model with multi-component dark matter

Biswas

Borah

Nanda

2019

J. High Energ. Phys.

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We propose a B − L gauged extension of the Standard Model where light neutrino masses arise from type III seesaw mechanism. Unlike the minimal B −L model with three right handed neutrinos having unit lepton number each, the model with three fermion triplets is however not anomaly free. We show that the leftover triangle anomalies can be cancelled by two neutral Dirac fermions having fractional B − L charges, both of which are naturally stable by virtue of a remnant Z 2 × Z 2 symmetry, naturally leading to a two component dark matter scenario without any ad-hoc symmetries. We constrain the model from all relevant phenomenological constraints including dark matter properties. Light neutrino mass and collider prospects are also discussed briefly. Due to additional neutral gauge bosons, the fermion triplets in type III seesaw can have enhanced production cross section in collider experiment.

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“…This light scalar field can be a viable FImP (denoted FImP instead of FIMP for being less massive) type dark matter candidate by assuming it has a sufficiently tiny interaction strength with other particles in the model. A study of thermal two component dark matter has been performed in the literature [136][137][138][139][140]. There is also work relating non-thermal multi component dark matter models explored to address the GC gamma ray excess or dwarf galaxy excess along with 3.55 keV X-ray results [90,141].…”

Section: Introductionmentioning

confidence: 99%

Two component WIMP–FImP dark matter model with singlet fermion, scalar and pseudo scalar

et al. 2017

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We explore a two component dark matter model with a fermion and a scalar. In this scenario the Standard Model (SM) is extended by a fermion, a scalar and an additional pseudo scalar. The fermionic component is assumed to have a global U(1) DM and interacts with the pseudo scalar via Yukawa interaction while a Z 2 symmetry is imposed on the other component -the scalar. These ensure the stability of both dark matter components. Although the Lagrangian of the present model is CP conserving, the CP symmetry breaks spontaneously when the pseudo scalar acquires a vacuum expectation value (VEV). The scalar component of the dark matter in the present model also develops a VEV on spontaneous breaking of the Z 2 symmetry. Thus the various interactions of the dark sector and the SM sector occur through the mixing of the SM like Higgs boson, the pseudo scalar Higgs like boson and the singlet scalar boson. We show that the observed gamma ray excess from the Galactic Centre as well as the 3.55 keV X-ray line from Perseus, Andromeda etc. can be simultaneously explained in the present two component dark matter model and the dark matter self interaction is found to be an order of magnitude smaller than the upper limit estimated from the observational results.

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Two component dark matter with multi-Higgs portals

Cited by 34 publications

References 105 publications

NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model

NLO+NLL collider bounds, Dirac fermion and scalar dark matter in the B–L model

Type III seesaw for neutrino masses in U(1)B−L model with multi-component dark matter

Two component WIMP–FImP dark matter model with singlet fermion, scalar and pseudo scalar

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