کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5494697 | 1528784 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Asymmetric dark matter in extended exo-Higgs scenarios
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
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چکیده انگلیسی
The exo-Higgs model can accommodate a successful baryogenesis mechanism that closely mirrors electroweak baryogenesis in the Standard Model, but avoids its shortcomings. We extend the exo-Higgs model by the addition of a singlet complex scalar Ï. In our model, Ï can be a viable asymmetric dark matter (ADM) candidate. We predict the mass of the ADM particle to be mÏâ1.3Â GeV. The leptophilic couplings of Ï can provide for efficient annihilation of the ADM pairs. We also discuss the LHC signals of our scenario, and in particular the production and decays of exo-leptons which would lead to “lepton pair plus missing energy” final states. Our model typically predicts potentially detectable gravitational waves originating from the assumed strong first order phase transition at a temperature of â¼ TeV. If the model is further extended to include new heavy vector-like fermions, e.g. from an ultraviolet extension, Ï couplings could explain the â¼3.5Ï muon gâ2 anomaly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 772, 10 September 2017, Pages 512-516
Journal: Physics Letters B - Volume 772, 10 September 2017, Pages 512-516
نویسندگان
Hooman Davoudiasl, Pier Paolo Giardino, Cen Zhang,