Direct Detection Portals for Self-interacting Dark Matter

Long-lived light mediator to dark matter and primordial small scale spectrum

“…3 The momentum exchange for DM scattering on xenon nucleus is roughly 50 MeV. Thus for mediator lighter than this value, the cross section will get saturated by the momentum exchange, and the bound could be slightly weakened [15]. We find this only slightly affects the lower bound on the mediator mass.…”

Long-lived light mediator to dark matter and primordial small scale spectrum

“…3 The momentum exchange for DM scattering on xenon nucleus is roughly 50 MeV. Thus for mediator lighter than this value, the cross section will get saturated by the momentum exchange, and the bound could be slightly weakened [15]. We find this only slightly affects the lower bound on the mediator mass.…”

Complementary test of the dark matter self-interaction in dark U(1) model by direct and indirect dark matter detection

“…It is seen that σ χp depends on ε γ , α χ and m φ . However, α χ is related to m χ by α χ ≈ 3.3 × 10 −5 (m χ /GeV) from the thermal relic density of symmetric DM [38,62].…”

“…and neutrinos are the only decay products of φ and the corresponding decay widths through photon and Z mixings are given in Ref. [38]. The branching ratio for φ → ν ν is determined by the relative magnitudes of mixing parameters ε γ and ε Z .…”

“…Furthermore, although φ is produced on-shell in the solar center, it does not decay instantly but instead propagates for a certain distance. The lifetime of φ is constrained by BBN, τ φ O(1) s [38,61]. Considering a 30…”

Daily modulation as a smoking gun of dark matter with significant stopping rate

“…This is achieved if we demand that the mediator decays before the universe was 3 seconds old. Following [27] we find the minimum value of ε that leads to decays without affecting BBN. The solid green line shows that value for m φ = 1 MeV.…”

Long-lived light mediator to dark matter and primordial small scale spectrum

“…3 The momentum exchange for DM scattering on xenon nucleus is roughly 50 MeV. Thus for mediator lighter than this value, the cross section will get saturated by the momentum exchange, and the bound could be slightly weakened [15]. We find this only slightly affects the lower bound on the mediator mass.…”

Complementary test of the dark matter self-interaction in dark U(1) model by direct and indirect dark matter detection

“…It is seen that σ χp depends on ε γ , α χ and m φ . However, α χ is related to m χ by α χ ≈ 3.3 × 10 −5 (m χ /GeV) from the thermal relic density of symmetric DM [38,62].…”

“…and neutrinos are the only decay products of φ and the corresponding decay widths through photon and Z mixings are given in Ref. [38]. The branching ratio for φ → ν ν is determined by the relative magnitudes of mixing parameters ε γ and ε Z .…”

“…Furthermore, although φ is produced on-shell in the solar center, it does not decay instantly but instead propagates for a certain distance. The lifetime of φ is constrained by BBN, τ φ O(1) s [38,61]. Considering a 30…”

Daily modulation as a smoking gun of dark matter with significant stopping rate

“…This is achieved if we demand that the mediator decays before the universe was 3 seconds old. Following [27] we find the minimum value of ε that leads to decays without affecting BBN. The solid green line shows that value for m φ = 1 MeV.…”

Long-lived light mediator to dark matter and primordial small scale spectrum

“…3 The momentum exchange for DM scattering on xenon nucleus is roughly 50 MeV. Thus for mediator lighter than this value, the cross section will get saturated by the momentum exchange, and the bound could be slightly weakened [15]. We find this only slightly affects the lower bound on the mediator mass.…”

Complementary test of the dark matter self-interaction in dark U(1) model by direct and indirect dark matter detection

“…It is seen that σ χp depends on ε γ , α χ and m φ . However, α χ is related to m χ by α χ ≈ 3.3 × 10 −5 (m χ /GeV) from the thermal relic density of symmetric DM [38,62].…”

“…and neutrinos are the only decay products of φ and the corresponding decay widths through photon and Z mixings are given in Ref. [38]. The branching ratio for φ → ν ν is determined by the relative magnitudes of mixing parameters ε γ and ε Z .…”

“…Furthermore, although φ is produced on-shell in the solar center, it does not decay instantly but instead propagates for a certain distance. The lifetime of φ is constrained by BBN, τ φ O(1) s [38,61]. Considering a 30…”

Daily modulation as a smoking gun of dark matter with significant stopping rate

“…This is achieved if we demand that the mediator decays before the universe was 3 seconds old. Following [27] we find the minimum value of ε that leads to decays without affecting BBN. The solid green line shows that value for m φ = 1 MeV.…”