Clay weekly context brief for the High Energy Physics category (ISO week 2026-W42).

Clay tracks publications from the High Energy Physics feed list. Below are recent items from this category, each with its source and a short description of what the publication covers when one is available in the source feed.

Recent publications:
1. Hot and dense medium effects on the $B_s^*$ and $B^*$ multiplets
   Source: hep-lat (High Energy Physics - Lattice)
   Link: https://arxiv.org/abs/2607.22419
   We present an extensive analysis of the in-medium masses and decay constants of the $B_s^*(5415)$ and $B^*(5325)$ multiplets, including both particles and antiparticles, using QCD sum rules at finite temperature and density.
2. Prescriptive Master Integrals of Maximal Weight at Two Loops
   Source: hep-th (High Energy Physics - Theory)
   Link: https://arxiv.org/abs/2610.10672
   We describe the construction of a spanning set of individually pure, planar master integrals involving massless particles in four dimensions which include all maximal-weight contributions at two loops.
3. Geometrothermodynamics of Black Hole Shadows: A Review
   Source: gr-qc (General Relativity and Quantum Cosmology)
   Link: https://arxiv.org/abs/2610.10638
   Black-hole shadows and geometrothermodynamics (GTD) are defined in different spaces but depend on the same macroscopic black-hole parameters.
4. Observation of single top-quark production in the $s$-channel in proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
   Source: hep-ex (High Energy Physics - Experiment)
   Link: https://arxiv.org/abs/2610.11465
   The first single-experiment observation of single top-quark production in the $s$-channel is presented.
5. Dark matter in the x-channel
   Source: hep-ph (High Energy Physics - Phenomenology)
   Link: https://arxiv.org/abs/2610.08724
   In this paper I study a class of scenarios in which a scalar singlet dark matter candidate interacts with the Standard Model in such a way that the Higgs portal is strongly suppressed, even at loop level, through a specific mechanism involving scalar mediators.
6. Symbolic Density Estimators for Unnormalized Distributions
   Source: hep-lat (High Energy Physics - Lattice)
   Link: https://arxiv.org/abs/2610.10807
   Estimating the symbolic or analytical form of probability density functions (PDFs) from observed samples is a fundamental challenge in statistical and computational modelling.
7. Gluons and Knots
   Source: hep-th (High Energy Physics - Theory)
   Link: https://arxiv.org/abs/2610.10673
   We argue that the scattering amplitude of a single minus helicity gluon with arbitrarily many positive helicity gluons is topological.
8. High-Accuracy Semi-Analytic Mode Functions, Ultraviolet Regularity, and Particle Creation in the Hybrid Approach to mLQC-I
   Source: gr-qc (General Relativity and Quantum Cosmology)
   Link: https://arxiv.org/abs/2610.10802
   We construct high-accuracy semi-analytic mode functions for scalar cosmological perturbations in mLQC-I within the hybrid approach to study ultraviolet regularity and gravitational particle creation.
9. Short-Baseline Near Detector (SBND): Design and Initial Performance
   Source: hep-ex (High Energy Physics - Experiment)
   Link: https://arxiv.org/abs/2610.11782
   The Short-Baseline Near Detector (SBND) is a 112 tonne active mass liquid argon time projection chamber (LArTPC) situated in the Booster Neutrino Beam at Fermilab, forming part of the Short-Baseline Neutrino (SBN) Program.
10. Testing Dark Matter Coscattering with the High-Energy LZ Recoil
   Source: hep-ph (High Energy Physics - Phenomenology)
   Link: https://arxiv.org/abs/2610.08648
   We investigate whether the high-energy nuclear recoil recently reported by LZ can probe dark matter (DM) whose relic abundance is set by coscattering, or conversion-driven freeze-out.
11. Electromagnetic isospin breaking in hadronic vacuum polarization within a VMD model
   Source: hep-lat (High Energy Physics - Lattice)
   Link: https://arxiv.org/abs/2610.11861
   One of the challenging components of modern lattice-QCD computations of the leading hadronic vacuum polarization contribution to the muon $(g-2)_\mu$ is the isospin-breaking correction due to electromagnetism.
12. Hawking Amplitudes: Subtle Points About Saddle Points
   Source: hep-th (High Energy Physics - Theory)
   Link: https://arxiv.org/abs/2610.10678
   Hawking amplitudes provide a new way of determining the Hawking spectrum of black holes, using on-shell techniques borrowed from the literature on scattering amplitudes.
13. Constitutive Geometry of the Effective Vacuum Sector of Pseudo-Complex General Relativity
   Source: gr-qc (General Relativity and Quantum Cosmology)
   Link: https://arxiv.org/abs/2610.10836
   Effective vacuum sectors in modified theories of gravity are often represented by anisotropic stress-energy tensors, even when the underlying source is geometric rather than material.
14. Observation of $\chi_{cJ}\to \Lambda K^0_S\bar \Xi^0 + c.c.$ and improved measurements of $\chi_{cJ}\to \Lambda K^-\bar \Xi^+ + c.c.$
   Source: hep-ex (High Energy Physics - Experiment)
   Link: https://arxiv.org/abs/2610.11981
   By analyzing $(2712. 4\pm14. 3)\times10^6$ $\psi(3686)$ events collected with the BESIII detector operating at the BEPCII collider, we report the first observation of $\chi_{cJ}\to \Lambda K^0_S\bar \Xi^0 + c. c.
15. Energy-momentum tensor at small $x$ from gravitational transverse-momentum distributions
   Source: hep-ph (High Energy Physics - Phenomenology)
   Link: https://arxiv.org/abs/2610.08456
   We investigate the momentum-space mechanical properties of small-$x$ gluons and sea quarks using gravitational transverse-momentum distributions (gravitational TMDs).
16. Asymptotic Safety in Gauge Theories beyond Four Dimensions: Perturbative Tests and Fixed-Point Mergers
   Source: hep-lat (High Energy Physics - Lattice)
   Link: https://arxiv.org/abs/2610.12225
   Non-Abelian gauge theories above four dimensions may admit an interacting ultraviolet fixed point through the competition between canonical scaling and gauge-field antiscreening.
17. Covariant BCFW for All Masses
   Source: hep-th (High Energy Physics - Theory)
   Link: https://arxiv.org/abs/2610.10686
   We use the massive spinor-helicity formalism to describe a novel construction for massive spinors which allows one to connect the many choices of bases useful in the representation of amplitudes involving massive particles, and we use this to derive a new formulation for the general BCFW shift that is valid regardless whether or which of the particles involved are massive or massless.
18. Probing the Black Hole Singularity with a Quantum String
   Source: gr-qc (General Relativity and Quantum Cosmology)
   Link: https://arxiv.org/abs/2610.10861
   In this paper, we investigate the quantum behaviour near the classical singularity of a black hole.
19. Using Geometric Deep Learning for the Detection of the Diffuse Supernova Neutrino Background in Water-Cherenkov Detectors
   Source: hep-ex (High Energy Physics - Experiment)
   Link: https://arxiv.org/abs/2610.12042
   The study of the Diffuse Supernova Neutrino Background (DSNB) is an essential approach to improve our understanding of the formation of Core-Collapse Supernovae, as well as investigating fundamental neutrino properties.
20. Exploring asymmetries in three-body cLFV lepton decays: probing CP violation in HNL extensions of the SM
   Source: hep-ph (High Energy Physics - Phenomenology)
   Link: https://arxiv.org/abs/2610.08366
   In extensions of the Standard Model with Majorana sterile fermions, additional Dirac and Majorana CP-violating phases can have a significant impact on charged lepton flavour violating (cLFV) transitions and decays.
21. Machine Learning Meets High-Energy Nuclear Physics: From Pattern Recognition to Physics-Integrated Discovery
   Source: hep-lat (High Energy Physics - Lattice)
   Link: https://arxiv.org/abs/2610.12293
   Machine learning (ML) in high-energy nuclear physics (HENP) is entering a new stage in which physical knowledge is incorporated more directly into data analysis, simulation, and physics inference.
22. General Spin-1 Dynamics During Inflation: Microcausality Constraints and Cosmological Collider Signals
   Source: hep-th (High Energy Physics - Theory)
   Link: https://arxiv.org/abs/2610.10693
   We construct the general theory of a spin-1 field propagating on an inflationary background consistent with scale invariance, rotations, Bunch-Davies conditions and microcausality.
23. Observational Signatures of Dyonic Black Holes in Non-Linear Electrodynamics
   Source: gr-qc (General Relativity and Quantum Cosmology)
   Link: https://arxiv.org/abs/2610.10866
   We study the observational features of thin-disk accretion and emission spectra for static, spherically symmetric dyonic black holes in non-linear electrodynamics (NLED).
24. Optimising Geometric Deep Learning for Varied Reconstruction Tasks in High Granularity Calorimeters
   Source: hep-ex (High Energy Physics - Experiment)
   Link: https://arxiv.org/abs/2610.12058
   In the recent years, high energy physics discoveries have been driven by the increasing of luminosity and/or detector granularity.
25. Compositeness of near-threshold exotic hadrons in systems with Coulomb and short-range interactions
   Source: hep-ph (High Energy Physics - Phenomenology)
   Link: https://arxiv.org/abs/2610.08340
   We study the universal properties of near-threshold $s$-wave eigenstates in systems with Coulomb plus short-range interactions by analyzing their compositeness.
26. Nucleon Parton Distribution Functions from Boosted Correlations in the Coulomb gauge
   Source: hep-lat (High Energy Physics - Lattice)
   Link: https://arxiv.org/abs/2602.11283
   Recently, a novel approach has been proposed to compute parton distributions through the use of boosted correlators fixed in the Coulomb gauge from lattice QCD, within the framework of Large-Momentum Effective Theory (LaMET).
27. Scattering entanglement entropy between one particle species and the others
   Source: hep-th (High Energy Physics - Theory)
   Link: https://arxiv.org/abs/2610.10704
   We construct the entanglement entropy of a general scattering process between one particle species (denoted as $A$) and the rest of the final state.
28. Chameleon Gravity with an Environmental Frequency Dependent on Density
   Source: gr-qc (General Relativity and Quantum Cosmology)
   Link: https://arxiv.org/abs/2610.11207
   Scalar field theories of modified gravity are strongly constrained by the absence of detectable long range fifth forces in laboratory and Solar System environments.
29. Evidence for Normal Neutrino Ordering with Combined Atmospheric Neutrino Experiments
   Source: hep-ex (High Energy Physics - Experiment)
   Link: https://arxiv.org/abs/2610.12208
   We present a combined analysis of the latest publicly available atmospheric neutrino data from Super-Kamiokande including all data-taking stages previous to the gadolinium phase, IceCube-DeepCore, and the six-detection-unit configuration of KM3NeT/ORCA.
30. Relations between electroweak parameters to order $\alpha_s^3$
   Source: hep-ph (High Energy Physics - Phenomenology)
   Link: https://arxiv.org/abs/2610.08282
   Relations between electroweak parameters can be measured with ever-increasing precision and a future lepton collider will require major advances in the theoretical predictions.
31. Continuum limit of a qubit-regularized SU(3) lattice gauge theory on a plaquette chain
   Source: hep-lat (High Energy Physics - Lattice)
   Link: https://arxiv.org/abs/2603.01215
   We show that a simple qubit-regularized $\mathrm{SU}(3)$ lattice gauge theory on a plaquette chain admits a continuum limit with massive gauge-invariant excitations, providing a minimal toy model of strong interactions without quarks.

Sources in this brief: gr-qc (General Relativity and Quantum Cosmology); hep-ex (High Energy Physics - Experiment); hep-lat (High Energy Physics - Lattice); hep-ph (High Energy Physics - Phenomenology); hep-th (High Energy Physics - Theory).
Selected 31 of 394 available items for this weekly brief.