Author:
Bélanger Geneviève,Kumar Jacky,London David,Pukhov Alexander
Abstract
Abstract
The present-day B-anomalies involving b → sμ+μ− or b → cτ−$$ \overline{\nu} $$
ν
¯
transitions can all be explained with the addition of a vector U1 leptoquark with a mass of $$ {M}_{U_1} $$
M
U
1
≳ 1.8 TeV. In the scalar singlet dark matter model (SSDMM), the DM is a scalar S that couples to the Higgs via λhSS2|H|2. We update the fit to the data and find that the SSDMM is now viable only for MS ≳ 1.6 TeV. In this paper, we assume that the DM also couples to the U1 via $$ {\lambda}_{U_1S}{S}^2{U}_{1\mu}^{\dagger }{U}_1^{\mu } $$
λ
U
1
S
S
2
U
1
μ
†
U
1
μ
. In addition to leading to DM annihilation via SS →$$ {U}_1{\overline{U}}_1 $$
U
1
U
¯
1
, this coupling generates SSgg and SSγγ couplings at one loop. Although naively divergent, these loop diagrams can be calculated under the assumption that the U1 is a gauge boson of a group broken at the TeV scale. With this DM-U1 coupling term, there are additional contributions to the various DM observables (relic density, direct and indirect detection). We find that the constraints on the SSDMM are relaxed for both heavy DM (MS ≳ $$ {M}_{U_1} $$
M
U
1
) and light DM (MS<$$ {M}_{U_1} $$
M
U
1
).
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Cited by
1 articles.
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