Results 31 to 40 of about 4,933 (138)

Neutrino Mass, Coupling Unification, Verifiable Proton Decay, Vacuum Stability, and WIMP Dark Matter in SU(5)

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
Nonsupersymmetric minimal SU(5) with Higgs representations 24H and 5H and standard fermions in 5¯F⊕10F is well known for its failure in unification of gauge couplings and lack of predicting neutrino masses. Like standard model, it is also affected by the instability of the Higgs scalar potential.
Biswonath Sahoo, Mainak Chakraborty, M. K. Parida, Farinaldo Queiroz   +3 more
wiley   +1 more source

Spacetime evolution during moduli stabilization in radiation dominated era beyond 4D effective theory

Journal of High Energy Physics, 2022
We investigate the time evolution of the background spacetime during the moduli stabilization process, which is assumed to occur in the radiation dominated era. The setup is basically the Salam-Sezgin model, but we add a potential term for the dilaton in
Hajime Otsuka, Yutaka Sakamura
doaj   +1 more source

New Light Species and the CMB

, 2013
We consider the effects of new light species on the Cosmic Microwave Background. In the massless limit, these effects can be parameterized in terms of a single number, the relativistic degrees of freedom.
Brust, Christopher, Kaplan, David E., Walters, Matthew T.   +2 more
core   +1 more source

Simplified Dark Matter Models

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
I review the construction of simplified models for dark matter searches. After discussing the philosophy and some simple examples, I turn the attention to the aspect of the theoretical consistency and to the implications of the necessary extensions of these models.
Enrico Morgante, Farinaldo Queiroz
wiley   +1 more source

Large spin-2 signals at the cosmological collider

Journal of High Energy Physics, 2022
We study the theory and phenomenology of massive spin-2 fields during the inflation with nonzero background chemical potential, and extend the cosmological collider physics to tensor modes.
Xi Tong, Zhong-Zhi Xianyu
doaj   +1 more source

Complementarity of the CERN Large Hadron Collider and the $e^+e^-$ International Linear Collider

, 2008
The next-generation high-energy facilities, the CERN Large Hadron Collider (LHC) and the prospective $e^+e^-$ International Linear Collider (ILC), are expected to unravel new structures of matter and forces from the electroweak scale to the TeV scale. In
A. Alves, A. Bartl, A. Datta, A. Djouadi, A. Freitas, A. Freitas, A. Freitas, A. Freitas, A. Freitas, A.J. Barr, B.K. Gjelsten, B.K. Gjelsten, C. Amsler, C. Athanasiou, C. Giunti, C.P. Buszello, D.J. Miller, D.J.H. Chung, E. Accomando, E. Boos, E.A. Baltz, F. Deppisch, G. Weiglein, G.A. Blair, G.A. Moortgat-Pick, G.F. Giudice, G.L. Kane, H. Murayama, H. Pagels, H.U. Martyn, J.A. Aguilar-Saavedra, J.A. Aguilar-Saavedra, J.I. Kamoshita, J.L. Feng, J.L. Feng, J.L. Feng, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Ellis, J.R. Espinosa, J.R. Espinosa, K. Desch, K. Hamaguchi, K. Inoue, K. Inoue, L. Alvarez-Gaume, L.E. Ibanez, L.E. Ibanez, M. Battaglia, M. Bolz, M. Duhrssen, M. Fukugita, M. Misiak, M.M. Muhlleitner, M.M. Nojiri, M.R. Buckley, M.S. Carena, M.S. Carena, M.S. Carena, M.Y. Khlopov, N. Arkani-Hamed, N. Arkani-Hamed, P. Bechtle, P. Bechtle, P. Langacker, R. Barbier, R. Dermisek, R.M. Barnett, S. Heinemeyer, S. Heinemeyer, S. Kraml, S. Schael, S. Y. Choi, S.F. King, S.Y. Choi, S.Y. Choi, S.Y. Choi, S.Y. Choi, S.Y. Choi, S.Y. Choi, S.Y. Choi, S.Y. Choi, T. Becher, U. Amaldi, U. Ellwanger, U. Ellwanger, U. Ellwanger, V. Barger, W. Buchmuller, W. Buchmuller, W. Kilian, W.Y. Keung   +93 more
core   +2 more sources

The Discreet Charm of Higgsino Dark Matter: A Pocket Review

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
We give a brief review of the current constraints and prospects for detection of higgsino dark matter in low‐scale supersymmetry. In the first part we argue, after performing a survey of all potential dark matter particles in the MSSM, that the (nearly) pure higgsino is the only candidate emerging virtually unscathed from the wealth of observational ...
Kamila Kowalska, Enrico Maria Sessolo, Yann Mambrini   +2 more
wiley   +1 more source

Cosmological Perturbations in Double Field Theory

Journal of High Energy Physics, 2023
We explore perturbative double field theory about time-dependent (cosmological) backgrounds to cubic order. To this order the theory is consistent in a weakly constrained sense, so that for a toroidal geometry it encodes both momentum and genuine winding
Olaf Hohm, Allison F. Pinto
doaj   +1 more source

Visible GeV ALP from TeV Vector‐Like Leptons

Fortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi, Marta Fuentes Zamoro, Luca Merlo   +2 more
wiley   +1 more source

Gauge‐Singlet Vector‐Like Fermion Dark Matter, LHC Diphoton Rate, and Direct Detection

Advances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017
We study a gauge‐singlet vector‐like fermion hidden sector dark matter model, in which the communication between the dark matter and the visible standard model sector is via the Higgs‐portal scalar‐Higgs mixing and also via a hidden sector scalar with loop‐level couplings to two gluons and also to two hypercharge gauge bosons induced by a vector‐like ...
Shrihari Gopalakrishna, Tuhin Subhra Mukherjee, Anna Cimmino   +2 more
wiley   +1 more source