Clay weekly context brief for the High Energy Physics category (ISO week 2026-W38). 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. Lattice 2-group symmetries: operators, defects, and gauging Source: hep-th (High Energy Physics - Theory) Link: https://arxiv.org/abs/2609.10682 We construct and study lattice realizations of finite 2-group symmetries in ${2+1}$d quantum lattice systems with finite-dimensional tensor-product Hilbert spaces. 2. Might the radiation era extend back to the Big Bang? On dark matter production and the relic graviton background in quadratic gravity Source: hep-ph (High Energy Physics - Phenomenology) Link: https://arxiv.org/abs/2609.11750 Naive estimates based on Einstein gravity with Lagrangian $\frac{1}{2}M_{pl}^{2}(R-2\Lambda)$ suggest that, if the radiation era extended back to the Big Bang (i.e., as far back as the classical spacetime background makes sense), this would result in an over-production of dark matter and a relic cosmic background of thermal gravitons. 3. Causal-Horizon Effects on Quarkonium Fragmentation in Jets Source: hep-ex (High Energy Physics - Experiment) Link: https://arxiv.org/abs/2604.11847 We reassess a horizon-inspired description of quarkonium formation in jets, distinguishing momentum redistribution from loss of spin alignment. 4. GW Explorer: A Beginner's Guide -- Developing a Computational Gravitational-Wave Outreach Curriculum for High School Students Source: gr-qc (General Relativity and Quantum Cosmology) Link: https://arxiv.org/abs/2609.10717 We present GW Explorer: A Beginner's Guide, an outreach curriculum designed to introduce high school students to gravitational-wave (GW) astrophysics through interactive Python Jupyter notebooks. 5. Predicting the spectrum and decay constants of positive-parity heavy-strange mesons using domain-wall fermions Source: hep-lat (High Energy Physics - Lattice) Link: https://arxiv.org/abs/2501.17846 We present a lattice-QCD calculation of the masses and decay constants of the positive-parity heavy-strange mesons $D^*_{s0}$, $D_{s1}$, $B^*_{s0}$, and $B_{s1}$. 6. Non-invertible Selection Rules from Generalized Discrete Gauging of Finite Non-Abelian Symmetries Source: hep-th (High Energy Physics - Theory) Link: https://arxiv.org/abs/2609.11895 We investigate non-invertible selection rules originating from the discrete $H$-gauging of theories with an underlying discrete global symmetry group $G$. 7. Precise bubble wall velocity in a specific phase transition pattern in the CxSM and beyond Source: hep-ph (High Energy Physics - Phenomenology) Link: https://arxiv.org/abs/2609.11747 The bubble wall velocity is a key quantity in cosmological first-order phase transitions, with important implications for electroweak baryogenesis, gravitational wave signals, the dark matter relic density and primordial black holes formed during the phase transition, and so on. 8. Measure charge transport in high-energy nuclear collisions with an energy scan of isobaric collisions Source: hep-ex (High Energy Physics - Experiment) Link: https://arxiv.org/abs/2604.02825 We present a method to measure electric-charge transport in high-energy nuclear collisions using a beam-energy scan of isobaric systems. 9. Quantum State of a Gravitating Spacetime Region Source: gr-qc (General Relativity and Quantum Cosmology) Link: https://arxiv.org/abs/2609.10684 We associate a gravitational Hilbert space $\mathbf{H}_\sigma$ to any closed compact $(d-1)$-manifold $\sigma$ with real metric. 10. Vector charmonium(-like) states in the energy range of 4.1-4.6 GeV Source: hep-lat (High Energy Physics - Lattice) Link: https://arxiv.org/abs/2606.06180 The spectrum of vector charmonium(-like) states in the 4.1\dash4.6~GeV energy region exhibits a long-standing tension between inclusive and exclusive measurements. 11. Chiral Spin(7) Sigma Models and Topological Modular Forms Source: hep-th (High Energy Physics - Theory) Link: https://arxiv.org/abs/2609.11856 We construct canonical chiral $\mathcal N=(0,1)$ sigma models on Spin(7) manifolds. 12. NLO corrections to the NEik DIS structure functions Source: hep-ph (High Energy Physics - Phenomenology) Link: https://arxiv.org/abs/2609.11700 We summarize the next-to-leading order (NLO) corrections to next-to-eikonal (NEik) quark background contributions to DIS structure functions. 13. CP Violation in $D \to KK$ Decays: A Comparative Analysis of Triplet and Sextet Diquarks Source: hep-ex (High Energy Physics - Experiment) Link: https://arxiv.org/abs/2602.21181 Recent measurements of the CP asymmetry in the decay $D^0 \rightarrow K_S^0 K_S^0$ by the CMS collaboration, $A_{CP}(K_S^0 K_S^0) = (6.2 \pm 3.0 \pm 0.2 \pm 0.8)\%$, and by LHCb, $A_{CP}(D^0 \to K_S^0 K_S^0) = (1.86 \pm 1.04 \pm 0.41)\%$, suggest possible deviations from Standard Model (SM) expectations, which predict asymmetries below the percent level. 14. Stokes Phenomena between AdS/CFT and dS/CFT Source: gr-qc (General Relativity and Quantum Cosmology) Link: https://arxiv.org/abs/2609.10677 As parameters are varied, the set of saddle points contributing to a (path) integral may change discontinuously, leading to a corresponding change in the asymptotic expansion of the integral. 15. The HALO Engine: $\mathcal{O}(1)$-Step Compilation and Localized String Rupture for Lattice Gauge Theories on Quantum Hardware Source: hep-lat (High Energy Physics - Lattice) Link: https://arxiv.org/abs/2608.19243 Simulating real-time dynamics in lattice gauge theories (LGTs) is severely constrained by the circuit depth overhead of standard fermion-to-qubit mappings, which scale linearly or quadratically with system size. 16. Optimizing the dilaton potential in holographic QCD via phase-transition constraints Source: hep-th (High Energy Physics - Theory) Link: https://arxiv.org/abs/2609.11800 In bottom-up holographic QCD (HQCD), two primary approaches are commonly employed: the potential reconstruction method, where the background geometry is fixed a priori and the dilaton potential is derived, and the direct method, where the potential is specified explicitly. 17. Hunting the Unseen: Deep Learning Analysis for Semi-Visible Jet Tagging Source: hep-ph (High Energy Physics - Phenomenology) Link: https://arxiv.org/abs/2609.11692 Semi-Visible Jets (SVJs) constitute a distinctive collider signature of strongly interacting dark sectors, embedding Dark Matter candidates, wherein jets contain both visible Standard Model objects and invisible dark hadrons, giving rise to correlated jet activity and missing transverse momentum. 18. Prospective study of light dark matter search in positron beam mode with DarkSHINE experiment initiative Source: hep-ex (High Energy Physics - Experiment) Link: https://arxiv.org/abs/2609.05900 We perform the prospective study on searching for invisibly decayed dark photons ($A^{\prime}$) in positron-on-fixed-target (POT) scheme with the DarkSHINE experiment simulation setup. 19. Entanglement entropy in topological tensor networks Source: gr-qc (General Relativity and Quantum Cosmology) Link: https://arxiv.org/abs/2609.10667 We derive an entropy formula for recently proposed tensor network models which prepare diffeomorphism invariant states of topological quantum field theories with non-compact and/or continuous gauge groups. 20. An improved partial-wave projection of the one-particle exchange in relativistic three-body scattering Source: hep-lat (High Energy Physics - Lattice) Link: https://arxiv.org/abs/2609.10306 A critical component of relativistic three-body scattering amplitudes is the one-particle exchange (OPE) process, wherein a single particle is exchanged between incoming and outgoing two-body subsystems. 21. Logarithmic supertranslations as asymptotic symmetries of gravity at null infinity Source: hep-th (High Energy Physics - Theory) Link: https://arxiv.org/abs/2609.11785 Logarithmic supertranslations have been shown recently to be symmetries of the gravitational field at spatial infinity. 22. An event generator for $h\to b\bar{b}$ decays at NLO in SMEFT matched to a parton shower Source: hep-ph (High Energy Physics - Phenomenology) Link: https://arxiv.org/abs/2609.11681 We present a Sherpa implementation of NLO corrections in dimension-six Standard Model Effective Field Theory (SMEFT) to the benchmark process $h\to b\bar b$. 23. A Reusable Four-Port S-Parameter to Link-Level Signal-Integrity Analysis Framework for High-Speed Detector Interconnects Source: hep-ex (High Energy Physics - Experiment) Link: https://arxiv.org/abs/2608.09462 A reusable MATLAB signal-integrity (SI) framework is presented that converts compatible four-port S-parameter data, measured by VNA or obtained from electromagnetic simulation, into traceable link-level evidence rather than a single loss metric. 24. An Effective $S$-Matrix Approach to Low-Frequency Waveforms from Black Hole Mergers Source: gr-qc (General Relativity and Quantum Cosmology) Link: https://arxiv.org/abs/2609.10329 We develop an on-shell description of low-frequency gravitational waveforms from black-hole mergers beyond leading order. 25. Faster Quantum Monte Carlo Simulation by Random Compilation Source: hep-lat (High Energy Physics - Lattice) Link: https://arxiv.org/abs/2609.10486 Quantum Monte Carlo (QMC) algorithms are among the most powerful classical methods for simulating quantum systems, yet their accuracy is often limited by the systematic errors in the approximations used, such as Trotterization. 26. Fermion quantum field theory on curved and non-inertial backgrounds in standard-Minkowski form Source: hep-th (High Energy Physics - Theory) Link: https://arxiv.org/abs/2609.11738 Quantum field theory on curved and non-inertial backgrounds contains background- and foliation-dependent quantities in the canonical Lagrangian, the hypersurface inner product and bilinear form, as well as in the equal-time anti-commutation relations. 27. Distinguishing a pseudoscalar from a vector $t\bar t$ resonance with top-quark spin correlations at the HL-LHC Source: hep-ph (High Energy Physics - Phenomenology) Link: https://arxiv.org/abs/2609.11641 Top-quark spin correlations provide a direct probe of the quantum numbers of a resonance decaying to $t\bar t$. 28. Signatures of Invisible Fermions in $\Lambda_b^0 \to \Lambda_c^+ \ell^- \bar{X}_{\rm inv}$ Decays Source: hep-ex (High Energy Physics - Experiment) Link: https://arxiv.org/abs/2609.11840 We investigate the effects of a massive invisible fermion in $\Lambda_b^0 \to \Lambda_c^+ \ell^- \bar{X}_{\rm inv}$ decays using a model-independent weak effective theory. 29. The Geometry of Gravitational Radiation Source: gr-qc (General Relativity and Quantum Cosmology) Link: https://arxiv.org/abs/2609.09954 We consider 4-dimensional asymptotically flat vacuum spacetimes near future null infinity endowed with the most general allowable Carroll geometry. 30. Realization of all-to-all fermion propagator for the first principle high accuracy strong interaction prediction Source: hep-lat (High Energy Physics - Lattice) Link: https://arxiv.org/abs/2505.01719 We propose a ``blending" algorithm that projects the all-to-all fermion propagator onto spatial low-frequency modes (LFM) combines the projection with a stochastic estimate of spatial high-frequency modes (SHFM) at each time slice. 31. Effective Dynamics of Inflationary End-of-the-World Branes in AdS$_3$ Source: hep-th (High Energy Physics - Theory) Link: https://arxiv.org/abs/2609.11643 We develop an effective description of a two-dimensional cosmological end-of-the-world brane embedded in AdS$_3$, with a scalar field localized on the brane. 32. Cosmic ray boosted dark matter with momentum dependent interactions can explain the LZ 248 keV event Source: hep-ph (High Energy Physics - Phenomenology) Link: https://arxiv.org/abs/2609.11600 The LZ experiment has recently reported an observation of a single event with characteristics of a nuclear recoil at a high recoil energy of 248 keV, where no background events are expected. 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 32 of 420 available items for this weekly brief.