Results 31 to 40 of about 465 (109)

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

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

Moduli inflation from modular flavor symmetries

Journal of High Energy Physics, 2023
We study slow-roll inflation model controlled by the modular flavor symmetry. In the model, the modulus field plays a role of inflaton and the introduction of the stabilizer field coupled to a modular form in the superpotential produces the inflaton ...
Yoshihiko Abe, Tetsutaro Higaki, Fumiya Kaneko, Tatsuo Kobayashi, Hajime Otsuka   +4 more
doaj   +1 more source

Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures

Advances in High Energy Physics, Volume 2019, Issue 1, 2019., 2019
The standard model of elementary particles (SM) suffers from various problems, such as power‐law ultraviolet (UV) sensitivity, exclusion of general relativity (GR), and absence of a dark matter candidate. The LHC experiments, according to which the TeV domain appears to be empty of new particles, started sidelining TeV‐scale SUSY and other known cures ...
Durmuş Demir, Michele Arzano
wiley   +1 more source

Inflation with vector fields revisited: non-Gaussianities

Journal of High Energy Physics
We revisit the resulting bispectrum of inflation with kinetic-coupled vector fields by organizing the dynamics in terms of h, which measures the vector kinetic contribution relative to that of the scalar field.
Chong-Bin Chen
doaj   +1 more source

Cosmological phase transitions in composite Higgs models

Journal of High Energy Physics, 2023
We investigate cosmological phase transitions in various composite Higgs models consisting of four-dimensional asymptotically-free gauge field theories. Each model may lead to a confinement-deconfinement transition and a phase transition associated with ...
Kohei Fujikura, Yuichiro Nakai, Ryosuke Sato, Yaoduo Wang   +3 more
doaj   +1 more source

Complementary Probes of the Dimension‐6 Operator via Gravitational Waves and Multi‐Higgs Production

Advances in High Energy Physics, Volume 2026, Issue 1, 2026.
We investigate the phenomenological consequences of a dimension‐6 operator H†H3/Λ2, Λ is the effective scale at which new physics takes over, which modifies the scalar potential of the standard model and can induce a strong first‐order electroweak phase transition (SFOEWPT). We estimate the lower limit on the effective scale Λ to be 515 GeV from the di‐
Dilruba Gazi, Abhi Mukherjee, Saurabh Niyogi, Sujoy Poddar, Subhash Singha   +4 more
wiley   +1 more source

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

Phase information in cosmological collider signals

Journal of High Energy Physics, 2022
Massive particles produced during the cosmic inflation can imprint in the primordial non-Gaussianities as characteristic oscillating functions of various momentum ratios, known as cosmological collider signals.
Zhehan Qin, Zhong-Zhi Xianyu
doaj   +1 more source

Characterization and Transformation of Affine and Homothetic Motions in the Framework of Fifth‐Order Recurrent Finsler Manifolds

Journal of Mathematics, Volume 2026, Issue 1, 2026.
The study of affine and homothetic motions in Finsler geometry plays a crucial role in understanding the intrinsic symmetries of geometric structures. In particular, recurrent Finsler spaces provide a rich framework for analyzing higher‐order geometric properties.
Adel M. Al-Qashbari, S. Saleh, Alaa M. Abd El-latif, Saeedah M. Baleedi, M. I. Elashiry, Mohamed Said Mohamed, Khaled A. Aldwoah, Hanan H. Sakr, Smritijit Sen   +8 more
wiley   +1 more source