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Browsing by Author "Korutlu, Beste"
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Dark matter from conformal sectors
Demir, Durmuş Ali; Frank, Mariana; Korutlu, Beste (Elsevier, 2014)We show that a conformal-invariant dark sector, interacting conformally with the Standard Model (SM) fields through the Higgs portal, provides a viable framework where cold dark matter (CDM) and invisible Higgs decays can ... -
Effects of a real singlet scalar on Veltman condition
Karahan, Canan Nurhan; Korutlu, Beste (Elsevier, 2014-05)We revisit the fine-tuning problem in the Standard Model (SM) and show the modification in the Veltman condition by virtue of a minimally-extended particle spectrum with one real SM gauge singlet scalar field. We demand ... -
Hidden spin-3/2 field in the standard model
Demir, Durmuş Ali; Karahan, Canan; Korutlu, Beste; Sargın, Ozan (Springer, 2017-09)Here we show that a massive spin-3/2 field can hide in the SM spectrum in a way revealing itself only virtually. We study collider signatures and loop effects of this field, and determine its role in Higgs inflation and ... -
Higgsed Stueckelberg vector and Higgs quadratic divergence
Demir, Durmuş Ali; Karahan, Canan Nurhan; Korutlu, Beste (Elsevier, 2015-01-05)Here we show that, a hidden vector field whose gauge invariance is ensured by a Stueckelberg scalar and whose mass is spontaneously generated by the Standard Model Higgs field contributes to quadratic divergences in the ... -
Softly fine-tuned Standard Model and the scale of inflation
Korutlu, Beste (World Scientific Publishing, 2015-11)The direct coupling between the Higgs field and the spacetime curvature, if finely tuned, is known to stabilize the Higgs boson mass. The fine-tuning is soft because the Standard Model (SM) parameters are subject to no ...