hep-ph papers | Gist.Science

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.

⚛️ nuclear experiments

Compatibility of recent ${\cal S}=-2$ emulsion events

This paper questions the compatibility of recent ${\cal S}=-2$ hypernuclear assignments from J-PARC E07 $\Xi^-$ -capture emulsion events with those derived from other experiments.

Avraham Gal2026-01-26

⚛️ phenomenology

Structure-Dependent QED Effects in Exclusive B Decays at Subleading Power

This paper derives the first subleading-power factorization theorem for the structure-dependent QED effects in the exclusive decay $B^-\to\ell^-\bar{\nu}_\ell$ , demonstrating that the amplitude depends on two- and three-particle light-cone distribution amplitudes and a new hadronic parameter $F(\mu,\Lambda)$ that generalizes the $B$ -meson decay constant.

Claudia Cornella, Matthias König, Matthias Neubert2026-01-23

⚛️ phenomenology

Analysis of the $q\bar q\to Z^* \to hA \to4τ$ process within the lepton-specific 2HDM at the LHC

This paper investigates the feasibility of detecting the $pp \to Z^* \to hA \to 4\tau$ process within the lepton-specific 2HDM Type-X scenario at the LHC (14 TeV, 300 fb $^{-1}$ ), demonstrating that a combination of kinematic selection and machine learning can effectively suppress Standard Model backgrounds to achieve significant sensitivity in the final state featuring same-sign leptons and hadronic tau decays.

Yan Ma, A. Arhrib, S. Moretti, S. Semlali, Y. Wang, Q. S. Yan2026-01-23

⚛️ high-energy experiments

Parton helicities at arbitrary x and Q2 in double-logarithmic approximation

This paper derives explicit expressions for parton helicities at arbitrary kinematics within the double-logarithmic approximation, advocates for $k_T$ -factorization over collinear factorization when accounting for orbital angular momentum, and demonstrates that DGLAP asymptotics are less singular at small $x$ than Regge asymptotics.

B. I. Ermolaev2026-01-23

⚛️ lattice

Quantum Bootstrap Approach to a Non-Relativistic Potential for Quarkonium systems

This paper applies the quantum bootstrap method to non-relativistic potential models, successfully validating the approach against charmonium and bottomonium data and predicting a quasi-bound toponium state with a mass of approximately 344.3 GeV that aligns with recent ATLAS and CMS observations.

Jairo Alexis Lopez, Carlos Sandoval2026-01-23

⚛️ high-energy experiments

Implementation of the Martini-Ericson-Chanfray-Marteau RPA-based neutrino and antineutrino cross-section model in the GENIE neutrino event generator

This paper presents the first implementation and validation of the Martini-Ericson-Chanfray-Marteau RPA-based model for quasielastic and multinucleon neutrino and antineutrino interactions within the GENIE event generator, demonstrating reasonable agreement with experimental data from T2K and MicroBooNE.

Lavinia Russo, Marco Martini, Stephen Dolan, Laura Munteanu, Boris Popov, Claudio Giganti2026-01-23

⚛️ nuclear theory

An improved formula for Wigner function and spin polarization in a decoupling relativistic fluid at local thermodynamic equilibrium

This paper presents an improved formula for the Wigner function and spin polarization of fermions in a decoupling relativistic fluid by introducing a new expansion method that captures geometric dependencies in the spin-shear term, naturally justifies the isothermal condition, and extends the framework to particles with arbitrary spin.

Xin-Li Sheng, Francesco Becattini, Daniele Roselli2026-01-23

⚛️ phenomenology

Branching Ratios of $H_{1,2,3} \rightarrow μ^{+}μ^{-}$ in the Broken-Phase N2HDM

This paper investigates the branching ratios of the rare decay $H \rightarrow \mu^+\mu^-$ for three CP-even Higgs bosons within the broken-phase Next-to-Two-Higgs-Doublet Model (N2HDM), incorporating one-loop corrections to identify viable parameter regions that explain the ATLAS signal strength enhancement and demonstrate the utility of dimuon precision measurements in probing extended Higgs sectors.

T. V. Obikhod, Ie. O. Petrenko2026-01-23

⚛️ phenomenology

LHC Signatures of Neutral Scalar Cascades in the $Z_3$ symmetric 3HDM

This paper investigates the LHC collider signatures of neutral scalar cascades in the $Z_3$ -symmetric Three Higgs Doublet Model, demonstrating that while the Medial Hierarchy scenario allows for discovery-level sensitivity of CP-even and CP-odd scalars via the $pp \rightarrow A \rightarrow HZ \rightarrow b \bar{b} l^+l^-$ process, the Regular Hierarchy scenario requires substantially higher luminosity to achieve similar detection prospects.

Baradhwaj Coleppa, Akshat Khanna, Santosh Kumar Rai, Agnivo Sarkar2026-01-23

⚛️ phenomenology

Unveiling a Universal Formalism for Quantum Entanglement in Arbitrary Spin Decays

This paper establishes a universal theoretical framework for quantifying quantum entanglement in the decay angular distributions of arbitrary spin particle-antiparticle pairs, deriving explicit observables and proportionality factors that reveal bosonic decays offer model-independent tests while fermionic cases require supplementary polarization information.

Junle Pei, Lina Wu, Dianwei Wang, Xiqing Hao, Tianjun Li2026-01-23

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hep-ph

Compatibility of recent S=−2{\cal S}=-2S=−2 emulsion events

Structure-Dependent QED Effects in Exclusive B Decays at Subleading Power

Analysis of the qqˉ→Z∗→hA→4τ q\bar q\to Z^* \to hA \to4τqqˉ​→Z∗→hA→4τ process within the lepton-specific 2HDM at the LHC

Parton helicities at arbitrary x and Q2 in double-logarithmic approximation

Quantum Bootstrap Approach to a Non-Relativistic Potential for Quarkonium systems

Implementation of the Martini-Ericson-Chanfray-Marteau RPA-based neutrino and antineutrino cross-section model in the GENIE neutrino event generator

An improved formula for Wigner function and spin polarization in a decoupling relativistic fluid at local thermodynamic equilibrium

Branching Ratios of H1,2,3→μ+μ−H_{1,2,3} \rightarrow μ^{+}μ^{-}H1,2,3​→μ+μ− in the Broken-Phase N2HDM

LHC Signatures of Neutral Scalar Cascades in the Z3Z_3Z3​ symmetric 3HDM

Unveiling a Universal Formalism for Quantum Entanglement in Arbitrary Spin Decays

Compatibility of recent ${\cal S}=-2$ emulsion events

Analysis of the $q\bar q\to Z^* \to hA \to4τ$ process within the lepton-specific 2HDM at the LHC

Branching Ratios of $H_{1,2,3} \rightarrow μ^{+}μ^{-}$ in the Broken-Phase N2HDM

LHC Signatures of Neutral Scalar Cascades in the $Z_3$ symmetric 3HDM