Hep-Ph explores the fundamental forces that govern how particles interact and behave at the smallest scales imaginable. This field bridges the gap between theoretical predictions and experimental reality, helping scientists understand the building blocks of our universe without getting lost in complex mathematics. Whether investigating the Higgs boson or searching for new physics beyond current models, these studies push the boundaries of human knowledge about matter and energy.

At Gist.Science, we process every new preprint in this category as soon as it appears on arXiv. We strip away the dense jargon to offer both accessible plain-language explanations and detailed technical summaries, ensuring that groundbreaking research is understandable to everyone from students to seasoned experts. Below are the latest papers in this dynamic field, ready for you to explore with clarity and depth.

⚛️ general relativity

Can we live in a baby universe formed by a delayed first-order phase transition?

This paper proposes that our universe originated as a baby universe within a classically conformal gauged U(1)BLU(1)_{B-L} extension of the Standard Model, demonstrating that this scenario is highly probable, consistent with cosmological data, and testable via the detection of a heavy neutral gauge boson at colliders.

Qing-Hong Cao, Masanori Tanaka, Jun-Chen Wang, Ke-Pan Xie, Jing-Jun Zhang2026-02-17
⚛️ phenomenology

Electroweak Phase Transition, Gravitational Waves and Collider Probes in Multi-Scalar Dark Matter Scenarios

This paper demonstrates that extending the Standard Model with two or three real singlet scalars stabilized by a Z2\mathbb{Z}_2 symmetry not only allows for viable dark matter candidates with larger Higgs portal couplings than the minimal single-scalar model but also induces a strong first-order electroweak phase transition capable of generating observable gravitational waves at future detectors like LISA and DECIGO.

Tripurari Srivastava, Jaydeb Das, Anupam Ghosh, Arnab Chaudhuri2026-02-17
⚛️ phenomenology

Neutrino oscillations and PMNS matrix in gauge-Higgs unification

This paper demonstrates that in an SO(5)×U(1)×SU(3)SO(5) \times U(1) \times SU(3) gauge-Higgs unification model within Randall-Sundrum warped space, neutrino oscillations and the PMNS matrix naturally arise from ultraviolet brane Majorana mass terms via an inverse seesaw mechanism, yielding a normal ordering with δCP=π\delta_{CP}=\pi that is consistent with NuFit-6.0 data.

Yutaka Hosotani2026-02-17
⚛️ phenomenology

Comprehensive investigation on baryon number violating nucleon decays involving an axion-like particle

This paper systematically investigates baryon number violating nucleon decays into axion-like particles using a complete set of dimension-eight effective operators and chiral perturbation theory to derive new decay expressions, which are then constrained by reanalyzing Super-Kamiokande data to establish significantly more stringent limits on effective scales and predict bounds on neutron and hyperon decays.

Wei-Qi Fan, Yi Liao, Xiao-Dong Ma, Hao-Lin Wang2026-02-17