128 citations · 363 across the 20 of their papers we have counts for
20 papers
Relic density and temperature evolution of a light dark sector
Xin-Chen Duan, Raymundo Ramos, Yue-Lin Sming Tsai
We have developed a set of four fully coupled Boltzmann equations to precisely determine the relic density and temperature of dark matter by including three distinct sectors: dark…
Confronting the prediction of leptonic Dirac CP-violating phase with experiments
Yang Hwan Ahn, Sin Kyu Kang, Raymundo Ramos +1
We update and improve past efforts to predict the leptonic Dirac CP-violating phase with models that predict perturbatively modified tribimaximal or bimaximal mixing. Simple pertur…
Implications of the new CDF-II -boson mass on two-Higgs-doublet models
Yang Hwan Ahn, Sin Kyu Kang, Raymundo Ramos
We present the implications of the recent measurement of boson at CDF II on the two-Higgs-doublet model (2HDM). In the analysis, we impose theoretical bounds such as vacuum sta…
A Sub-GeV Low Mass Hidden Dark Sector of
Raymundo Ramos, Van Que Tran, Tzu-Chiang Yuan
We present a detailed study of the non-abelian vector dark matter candidate with a MeV-GeV low mass range, accompanied by a dark photon and a dark …
Shedding light on dark matter with recent muon and Higgs exotic decay measurements
Chih-Ting Lu, Raymundo Ramos, Yue-Lin Sming Tsai
Recently, we have witnessed two hints of physics beyond the standard model: A 3.3 local excess ( GeV) in the search for and…
Complementary Searches of Low Mass Non-Abelian Vector Dark Matter, Dark Photon and Dark
Raymundo Ramos, Van Que Tran, Tzu-Chiang Yuan
We present a novel study of the non-abelian vector dark matter candidate with a MeVGeV low mass range, accompanied by a dark photon and a dark o…
Predictions for the Leptonic Dirac CP-Violating Phase
Lisa L. Everett, Raymundo Ramos, Ariel B. Rock +1
We explore the theoretical constraints on the observable parameters of neutrino mixing on predictions for the leptonic Dirac CP-violating phase within a well-studied class of simpl…
Complex Scalar Dark Matter in G2HDM
Chuan-Ren Chen, Yu-Xiang Lin, Chrisna Setyo Nugroho +3
The complex scalar dark matter (DM) candidate in the gauged two Higgs doublet model (G2HDM), stabilized by a peculiar hidden parity (-parity), is studied in detail. We explore t…
Consistency of Gauged Two Higgs Doublet Model: Gauge Sector
Cheng-Tse Huang, Raymundo Ramos, Van Que Tran +2
We study the constraints on the new parameters in the gauge sector of gauged two Higgs doublet model using the electroweak precision test data collected from the Large Electron Pos…
Consistency of a gauged two-Higgs-doublet model: Scalar sector
Abdesslam Arhrib, Wei-Chih Huang, Raymundo Ramos +2
We study the theoretical and phenomenological constraints imposed on the scalar sector of the gauged two Higgs doublet model proposed recently as a variant of the popular inert Hig…
Predictions for the Dirac CP-Violating Phase from Sum Rules
Luis A. Delgadillo, Lisa L. Everett, Raymundo Ramos +1
We explore the implications of recent results relating the Dirac CP-violating phase to predicted and measured leptonic mixing angles within a standard set of theoretical scenarios…
Flavored axion-monodromy inflation
Christopher D. Carone, Raymundo Ramos, Zhen Wang
The hierarchy of fermion masses in the standard model may arise via the breaking of discrete gauge symmetries. The renormalizable interactions of the flavor-symmetry-breaking poten…
Dark chiral symmetry breaking and the origin of the electroweak scale
Christopher D. Carone, Raymundo Ramos
We study a classically scale-invariant model in which strong dynamics in a dark sector sets the scale of electroweak symmetry breaking. Our model is distinct from others of this ty…
A Permutation on Hybrid Natural Inflation
Christopher D. Carone, Joshua Erlich, Marc Sher +1
We analyze a model of hybrid natural inflation based on the smallest non-Abelian discrete group S_3. Leading invariant terms in the scalar potential have an accidental global symme…
LHC Constraints on the Lee-Wick Higgs Sector
Christopher D. Carone, Raymundo Ramos, Marc Sher
We determine constraints on the Lee-Wick Higgs sector obtained from the full LHC Higgs boson data set. We determine the current lower bound on the heavy neutral Lee-Wick scalar, as…
Charged Higgs Discovery in the W plus "Dark" Vector Boson Decay Mode
Hooman Davoudiasl, William J. Marciano, Raymundo Ramos +1
In Two Higgs doublet extensions of the Standard Model, flavor-changing neutral current constraints can be addressed by introducing a U(1)' gauge symmetry, under which the Higgs dou…
The Dark Z and Charged Higgs Decay
Raymundo Ramos, Marc Sher
If there is an additional U(1) symmetry under which Standard Model particles are singlets, then there can be mixing between the additional gauge boson and the hypercharge gauge bos…
Classical scale-invariance, the electroweak scale and vector dark matter
Christopher D. Carone, Raymundo Ramos
We consider a classically scale-invariant extension of the standard model in which a dark, non-Abelian gauge symmetry is spontaneously broken via the Coleman-Weinberg mechanism. Hi…
Model of flavor with quaternion symmetry
Alfredo Aranda, Cesar Bonilla, Raymundo Ramos +1
We present a renormalizable fermion mass model based on the symmetry that accommodates all fermion masses and mixing angles in both the quark and lepton sectors. It requires…
A renormalizable fermion mass model with the double tetrahedral group
Alfredo Aranda, Cesar Bonilla, Raymundo Ramos +1
We present a renormalizable model for fermion masses based solely on the double tetrahedral group T'. It does not include right handed neutrinos and majorana neutrino masses are ge…