Results 61 to 70 of about 165,969,103 (172)

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

The quality/cosmology tension for a post-inflation QCD axion

Journal of High Energy Physics
It is difficult to construct a post-inflation QCD axion model that solves the axion quality problem (and hence the Strong CP problem) without introducing a cosmological disaster. In a post-inflation axion model, the axion field value is randomized during
Qianshu Lu, Matthew Reece, Zhiquan Sun
doaj   +1 more source

Freeze-in dark matter via lepton portal: Hubble tension and stellar cooling

Journal of High Energy Physics, 2023
We propose a new freeze-in dark matter candidate which feebly couples to the standard model charged leptons. The feeble interactions allow it (i) to freeze-in from the Standard Model thermal bath with its relic density being either a fraction or the ...
Zixuan Xu, Shuai Xu, Ruopeng Zhang, Sibo Zheng   +3 more
doaj   +1 more source

Bioanthropological analysis of human remains from the archaic and classic period discovered in Puyil cave, Mexico

American Journal of Biological Anthropology, Volume 184, Issue 2, June 2024.
Geographic distribution of shared mtDNA haplotypes between. This map shows the geographic distribution of shared mtDNA haplotypes between the human remains of Puyil Cave and those reported previously from ancient and contemporary people. Additionally, in the bottom right corner are shown the skulls on the surface of Chamber 4, discovered in this cave ...
María Teresa Navarro‐Romero, María de Lourdes Muñoz, Ben Krause‐Kyora, Javiera Cervini‐Silva, Enrique Alcalá‐Castañeda, Randy E. David   +5 more
wiley   +1 more source

Beyond Standard Model Searches in the MiniBooNE Experiment

Advances in High Energy Physics, Volume 2015, Issue 1, 2015., 2015
The MiniBooNE experiment has contributed substantially to beyond standard model searches in the neutrino sector. The experiment was originally designed to test the Δm2 ~ 1 eV2 region of the sterile neutrino hypothesis by observing νe(ν-e) charged current quasielastic signals from a νμ(ν-μ) beam.
Teppei Katori, Janet M. Conrad, Abhijit Samanta   +2 more
wiley   +1 more source

Scalar field couplings to quadratic curvature and decay into gravitons

Journal of High Energy Physics, 2022
Any field, even if it lives in a completely hidden sector, interacts with the visible sector at least via the gravitational interaction. In this paper, we show that a scalar field in such a hidden sector generically couples to the quadratic curvature via
Yohei Ema, Kyohei Mukaida, Kazunori Nakayama   +2 more
doaj   +1 more source

Phenomenological Hints from a Class of String Motivated Model Constructions

Advances in High Energy Physics, Volume 2015, Issue 1, 2015., 2015
We use string theory constructions towards the generalisation of the supersymmetric standard model of strong and electroweak interactions. Properties of the models depend crucially on the location of fields in extradimensional compact space. This allows us to extract some generic lessons for the phenomenological properties of the low energy effective ...
Hans Peter Nilles, Michal Malinský
wiley   +1 more source

“The most philosophically of all the sciences”: Karl Popper and physical cosmology [PDF]

, 2012
Problems of scientific cosmology only rarely occur in the works of Karl Popper. Nevertheless, it was a subject that interested him and which he occasionally commented on.
Kragh, Helge
core  

Self consistent thermal resummation: a case study of the phase transition in 2HDM

Journal of High Energy Physics
An accurate description of the scalar potential at finite temperature is crucial for studying cosmological first-order phase transitions (FOPT) in the early Universe.
Pedro Bittar, Subhojit Roy, Carlos E. M. Wagner   +2 more
doaj   +1 more source