High Energy Physics - Experiment
Results from high-energy/particle physics experiments and prospects for future experimental results, including tests of the standard model, measurements of standard model parameters, searches for physics beyond the standard model, and astroparticle physics experimental results. Does not include: detectors and instrumentation nor analysis methods to conduct experiments.
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A six-form-factor pQCD calculation matched to lattice data yields SM predictions for branching fractions and angular observables.
· “Investigation of Λ_(b)to Λ_(c) ell^-overlineν_ell Decays in Perturbative QCD Approach”
ATLAS full Run 2 search excludes electron- and muon-mixing heavy neutrinos in the 15-30 GeV window at 95% confidence
A b c anti-s anti-d molecule in Upsilon weak decay would leave a peak plus a tell-tale threshold dip.
· “T_(bcbar s) states in the process Upsilon to D⁻ bar B⁰ D_s⁺”
Combining 13 and 13.6 TeV data, ATLAS finds the rare decay rate matches the Standard Model prediction.
With the shower fixed, switching string vs cluster hadronization now quantifies a key non-perturbative uncertainty.
· “Herwig 7 with the Lund String Model: Tuning and Comparative Hadronization Studies”
Two GNN branches separate stable kinematics from systematics; profiling keeps 68% coverage in 50,000 trials.
· “Higgs Signal Strength Estimation with Machine Learning under Systematic Uncertainties”
Conventional quarkonia fit potential models below threshold; the charged, near-threshold XYZ states do not.
Superconducting sensors, atom interferometers, and spin sensors could push fundamental-physics experiments beyond classical sensitivity limi
· “Quantum measurement systems and applications to particle physics and cosmology”
The upgrade makes mixed QCD and electroweak corrections a standard, user-level step in collider simulations.
New NICA data match JAM and extend equation-of-state tests to a new system.
· “Analysis Note: Directed flow v₁ of protons in the Xe+Cs(I) collisions at 3.8 AGeV”
Standard Model benchmarks for the excited Omega_b's b-to-c weak decay, testable at hadron colliders.
· “Semileptonic Ω_(b)^(*)rightarrowΩ_(c)^(*) ell bar{ν}_(ell) transition in QCD”
The pT spectrum matches FONLL, GM-VFNS, kt-factorisation, and TAMU within uncertainties
Because proton decay is doubly suppressed, the new scalars stay at TeV masses and the LHC can produce them.
· “A Baryon and Lepton Number Violation Model Testable at the LHC”
In Pb+O and Pb+Ne collisions, v2/v3 in the 2<η<5 window best separates spherical, deformed, and alpha-clustered 16O and 20Ne.
· “A comparison study of collisions at relativistic energies involving light nuclei”
Using archived ALEPH data, the strong force now has a single measurement reaching the back-to-back limit.
Measure the Zc(3900) pole: it tells whether the three-hadron DDD* state is bound or not.
· “Constraining the DDD^* three-body bound state via the Z_c(3900) pole”
The predicted rate is too small for today's data, but a super tau-charm factory could catch a few events per year.
Two model-agnostic designs pick rare decays with up to 100% purity, enabling new-physics searches and upper limits.
· “AI-powered full-data set search for new physics in ultraperipheral and diffractive events”
For spin-1 and spin-3/2 hadrons, the quark-gluon force gains quadrupole terms that a single c-bar(t) cannot capture.
· “Quadrupole forces between quark/gluon subsystems inside higher-spin particles”
Nuclear-recoil tracks preserved for a billion years could record dark matter, neutrinos, and cosmic rays.
· “Mineral Detection of Neutrinos and Dark Matter 2025 Proceedings”
Spherocity-split EPOS-LHC runs tie the narrowing to radial flow, a candidate collective signal in small systems.
Machine-learning unfolding yields per-event weights, letting physicists rebin 91 GeV e+e- data and revisit alpha_s.
Predicted masses 8.87–9.36 GeV and 12.13–12.45 GeV come with golden decay channels for experiments.
· “Triply heavy tetraquarks bar{b}cbar{q}c and bar{c}bbar{q}b in a constituent quark model”
Fully showered events now match fixed-order NNLO rates for the Higgs-pair mass, sharpening self-coupling searches.
· “NNLO+PS Double Higgs boson production with top-quark mass corrections in GENEVA”
A Mach-Zehnder interferometer with one arm underground would reveal a phase shift if relic neutrinos carry charge.
· “Probing Terrestrial Relic Neutrino Charge with Mach-Zehnder Interferometer”
A 3 mJ subrelativistic pulse makes single-cycle THz surface waves at 2.4% conversion, the highest reported.
· “Efficiently Laser Driven Terahertz Surface Plasmon Polaritons on Long Metal Wire”
Measured with MeV protons across 50, 100, and 150 µm sensors; suppression grows with bias voltage.
· “Measured gain suppression in FBK LGADs with different active thicknesses”
Bottomonium masses, decay widths, and the 10.71 GeV bump all fall out of one quark model with meson-pair loops.
Including neutrino-electron scattering in the CONUS+ fit sets the tightest light-scalar limit above 6 MeV
· “Probing Standard Model and Beyond with Reactor CEνNS Data of CONUS+ experiment”
A QED Coulomb calculation predicts bound and resonant states from −30 to −1 eV, a clean analog of tetraquark physics.
· “Trilepton and tetralepton bound and resonant states: the QED counterpart of multiquark states”
Two germanium crystals near a 3.4 GW reactor would beat beam-dump limits; a tenfold upgrade closes the cosmological triangle.
· “Hunting for Axions in REactor neutrino COherent scattering Detection Experiment”
320 atoms per run let the team clock velocities and binding energies; ~50 slow ground-state atoms per run could enable a 50-hour measurement
A unified transformer with energy-conserving assignments beats hand-tuned and learned baselines on CLIC dijet events.
CelloAI pairs syntax-aware code retrieval with callgraph hints to lift open-model porting coverage to 8/8.
· “CelloAI: Leveraging Large Language Models for HPC Software Development in High Energy Physics”
A machine-learning scan of 13 TeV ATLAS collisions constrains models with extra dimensions and composite Higgs.
Light-front form factors put the Omega_c electron-to-pion ratio near 1.3, below the current measurement.
Forward neutrinos at 300-600 GeV outnumber all generators, while charm-driven neutrinos above 1 TeV come up short.
First estimates for ppμ−μ− and ppτ−τ− give concrete energies that muon and tau facilities could search for.
Offline tag and 4 m of argon shielding lift sensitivity 100x, if unmeasured gammas stay low.
· “Opportunities and challenges to study solar neutrinos with a Q-Pix pixel readout”
A Geant4 model matchup narrows a key neutrino-detector uncertainty and sharpens the search for supernova neutrinos.
In strong fields, Z0 decay pairs could leave the reaction plane and push antimuons to higher momentum than muons.
First uncertainty-quantified EFT value for the elementary decay process could shrink nuclear matrix element errors.
· “Next-to-leading-order prediction for the neutrinoless double-beta decay”
It also predicts near-unity polarization and a χ_c0 ratio open to future data.
· “Study of B_c to chi_(cJ)\ (P, V) decays in the improved perturbative QCD formalism”
Blast-wave model with flow and temperature fluctuations explains the new v0(pT) data and yields hotter freeze-out than pT-spectra fits.
· “Study of p_T-differential radial flow in blast-wave model”
The same runs would sharpen tau and charm CP searches and improve kaon CPT limits tenfold.
A 42-parameter network cuts reduced chi-square from 1.28 to 0.97 on Drell-Yan data, a first for TMD extraction.
· “A Neural-Network Extraction of Unpolarised Transverse-Momentum-Dependent Distributions”
Low-threshold germanium detectors turn reactor neutrinos into a precision electroweak probe.
· “Reactor antineutrinos CEνNS on germanium: CONUS+ and TEXONO as a new gateway to SM and BSM physics”
A single six b-jet analysis, rescaled once, constrains any model with two narrow heavy scalars.
· “Triple Higgs Boson Production with Two Heavy Scalars at the LHC via a Simplified Approach”
Large 200-mm scintillator keeps its fast component while suppressing the slow one, promising sub-100 ps detectors.
· “Scintillation and Timing Performance of a 3at% Yttrium-Doped Barium Fluoride Crystal”
Shockwave-based amplitudes include transversely polarized meson production at small x, with no endpoint singularities.
· “Exclusive leptoproduction of a light vector meson at the twist-3 in a GTMD framework”
Comparing forward electrons with muons and positrons reaches 0.6e-5 statistical sensitivity at the Z pole.
A status review shows pion-pion, nuclear, and Big Bang results all still need the chiral QCD framework.
A singlet fermion rescues the sub-TeV triplet window and drives the strong transition whose GW signal passes SNR>10 at future space…
· “Prospecting bipartite Dark Matter through Gravitational Waves”
Mass-window and energy-scaling ratios separate a heavy pseudoscalar from toponium.
· “Contrasting Pseudoscalar Higgs and Toponium States at the LHC and Beyond”
Branching fraction of B0→π0π0 measured to (1.25±0.23)×10⁻⁶, tightening the CKM angle φ2 constraint.
A trained Hough-style algorithm treats arrival time as a coordinate and fits particle mass directly.
· “A space-time tracking algorithm for high occupancy events at future colliders”
A TeV muon beam on heavy ions reaches leptoquarks, Z' bosons, ALPs, and sterile neutrinos beyond today's experiments.
· “New Physics at the Muon (Synchrotron) Ion Collider: MuSIC for several scales”
New power corrections are as big as the NLL terms, tightening SM rare-decay rates to ~10%.
Flowing helium gas keeps a MADMAX booster cold for 29 hours in a 1.6 T field, enabling a first dark-matter search.
· “Non-magnetic glass-fiber cryostat for MADMAX prototype tests”
In the data-driven (g-2) test, a vector that decays to hadrons leaves almost no trace; the lattice-vs-dispersion HVP test takes over.
· “Searching for hadronic scale baryonic and dark forces at (g-2)_μ's lattice-vs-dispersion front”
Eight years of DAMPE data show a secondary cosmic-ray break twice as strong as in protons and helium.
· “Observation of a spectral hardening in cosmic ray boron spectrum with the DAMPE space mission”
Review says final-state interactions set threshold shapes and vector-meson models set the continuum; the open problems are experimental.
· “Electromagnetic form factors of hyperons in the timelike region: A short review”
ML anomaly scans of 138 fb-1 of 13 TeV data find no bumps; several benchmark limits are firsts.
A reanalysis finds four-lepton yield in Run 2 search exceeds a strict bound; mass limits soften from 1065 to ~950 GeV.
Suppression grows from peripheral to central, with hints of stronger quenching than at mid-rapidity.
First per-event muon angles from a millikelvin array; flux matches dedicated detectors.
A factor-of-four gap between rho-N and omega-N couplings that hadron-structure models will have to explain.
· “rho-Meson Nucleon Scattering Length from CLAS Threshold Photoproduction Measurements”
One experiment would look for the thermal photon and its entangled partner, testing how black-hole information is preserved.
CREX's calcium measurement plus a tight calcium-argon correlation gives CEvNS experiments a 1% coherence-loss baseline.
First gradient-flow lattice test on the pion matches global fits for moment ratios through ⟨x^5⟩.
· “Gradient flow for parton distribution functions: first application to the pion”
ARIMA whitening turns one calorimeter pixel's noise into bits that pass all applicable randomness tests.
· “Time Series Analysis of DECAL Sensor Noise for the Generation of Truly Random Numbers”
First evidence of epoch- and model-wise double descent in particle physics data
· “Double Descent and Overparameterization in Particle Physics Data”
Nine νμ+ντ events per day would test probability conservation; per-mille precision could expose CP violation.
Review ranks X(3872), T_cc, and open-charm states with the deuteron—and predicts a new state, W_c1.
A two-point energy correlator of heavy hadrons cleanly isolates the g→QQbar splitting, in vacuum and in quark–gluon plasma.
Radon-pair flow maps let LZ predict where each 214Pb atom will decay and veto it — already running in its 2024 WIMP search.
· “Flow-dependent tagging of ²¹⁴Pb decays in the LZ dark matter detector”
A 745,000-event analysis moves the 2 GeV phase signal to a conventional 1++ wave, testing hybrid mesons.
· “Partial-wave decomposition of the diffractively produced π^-π^+π^-η final state at COMPASS”
A -9.1 ppm result clashes with the near-zero high-energy value, hinting two-photon exchange grows at low energy.
First search sets 90% upper limits on ΣcΣ̄c and Λc+Σ̄c− production at five energies; all signals absent.
Test facility measures how residual gas coats 10–15 K silicon mirrors and how to clean them in place.