⚛️ Category

hep-ex

2503 papers

Hep-Ex explores the fascinating intersection where particle physics meets experimental reality. This field investigates how scientists build massive detectors and accelerate particles to test the fundamental laws of nature, turning abstract theories into measurable data. It is the rigorous process of searching for new particles or forces that could reshape our understanding of the universe, often requiring years of collaboration and engineering.

At Gist.Science, we ensure these discoveries become accessible to everyone. We process every new preprint in this category directly from arXiv, generating both plain-language explanations for curious readers and detailed technical summaries for specialists. Our goal is to bridge the gap between complex experimental results and public understanding without losing scientific nuance.

Below are the latest papers in Hep-Ex, freshly summarized and ready for you to explore.

⚛️ high-energy experiments

Combination of searches for nonresonant Higgs boson pair production in proton-proton collisions at s\sqrt{s}= 13 TeV

Using 138 fb−1^{-1} of proton-proton collision data at 13 TeV collected by the CMS experiment, this paper presents a combined search for nonresonant Higgs boson pair production that sets the most stringent limits to date on the inclusive production cross section, constrains the Higgs trilinear self-coupling and vector boson coupling modifiers, and explores various new physics scenarios within the Higgs effective field theory framework.

CMS Collaboration2026-09-09
⚛️ high-energy experiments

Reconstruction of neutrino events in the Accelerator Neutrino Neutron Interaction Experiment: Part I

This paper establishes a baseline for event reconstruction in the ANNIE detector using only conventional photomultiplier tubes and a muon spectrometer, demonstrating that a pattern-recognition-based fit achieves a 60 cm vertex uncertainty, 13.2-degree directional uncertainty, and approximately 10% energy resolution for BNB muon neutrino CC0pi events.

S. Abubakar, M. Acsencio-Sosa, D. Ajana, M. A. Aman, J. Beacom, M. Bergevin, D. Bick, M. Breisch, G. Caceres Vera, S. Da (…)2026-09-09
⚛️ high-energy experiments

First results of the NEXT-100 detector using 83m^{83m}Kr decays

The NEXT collaboration reports the first commissioning results from the NEXT-100 detector using 83m^{83m}Kr calibration data, demonstrating an energy resolution of 4.16% FWHM in a fiducial region that extrapolates to a sub-1% resolution at the double beta decay energy, thereby meeting the experiment's design target.

NEXT Collaboration, G. Martínez-Lema, C. Hervés Carrete, S. Torelli, M. Cid Laso, P. Vázquez Cabaleiro, B. Palmeiro, J. (…)2026-09-09
⚛️ high-energy experiments

Minimal Flavor Protection for TeV-scale New Physics

This paper identifies SU(2)q×U(1)XSU(2)_{q} \times U(1)_{X} as the minimal continuous symmetry required to protect TeV-scale new physics from flavor constraints, demonstrating that this framework can reproduce observed fermion hierarchies with minimal symmetry breaking while significantly expanding the viable parameter space for collider-accessible scenarios beyond standard Minimal Flavor Violation.

Admir Greljo, Ajdin Palavrić, Ben A. Stefanek2026-09-09
⚛️ high-energy experiments

Probing Dark Matter annihilation in the Galactic Centre with TRIDENT

This paper demonstrates that the TRIDENT neutrino telescope will surpass the thermal freeze-out benchmark for dark matter annihilation in the Galactic Centre by leveraging cascade events and accounting for a previously overlooked background of Galactic neutrinos, thereby probing untested regions of parameter space.

Yingwei Wang, Xinhui Chu, Andrew Cheek, Iwan Morton-Blake, Qichao Chang, Gwenael Giacinti, Samy Kaci, Xin Xiang, Donglia (…)2026-09-09
⚛️ high-energy experiments

Search for heavy scalar resonances decaying to Lorentz-boosted Higgs and Higgs-like bosons in the bbˉ\mathrm{b\bar{b}}4q final state at s\sqrt{s} = 13 TeV

Using 138 fb−1^{-1} of 13 TeV proton-proton collision data from the CMS experiment, this paper presents the first LHC search for heavy scalar resonances decaying into a Higgs boson and a Higgs-like scalar in the all-hadronic bbˉ\mathrm{b\bar{b}}4q final state, employing machine-learning techniques to identify boosted topologies and setting stringent upper limits on the production cross section without observing any significant excess over the Standard Model background.

CMS Collaboration2026-09-09
⚛️ phenomenology

Agnostic search for a vector-like top partner at a lepton collider via the recoil mass technique

This paper presents an agnostic search strategy for single vector-like top partner production at a 3 TeV lepton collider using the recoil mass technique, demonstrating a discovery potential exceeding 3σ3\sigma significance for masses at the lowest benchmarks when the coupling strength κT\kappa_{T} surpasses approximately 0.3 under realistic conditions including beam polarization and initial-state radiation.

Higinio Valle, Cristina Oropeza Barrera, Oscar Ochoa-Valeriano2026-09-09
⚛️ high-energy experiments

Measurement of CP Asymmetry Parameters and Polarization Correlations in Ω−Ωˉ+\Omega^{-}\bar{\Omega}^{+} Pairs

Using a dataset of 2.71×1092.71 \times 10^9 ψ(3686)\psi(3686) events collected by the BESIII detector, this study performs the first simultaneous measurement of the weak decay parameters and CP-sensitive observable ϕCP\phi_{\rm CP} for Ω−\Omega^- and Ωˉ+\bar{\Omega}^+ pairs, while also extracting weak and strong phase differences and polarization correlations.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, C. S. Akondi, R. Aliberti, A. Amoroso, L. P. An (…)2026-09-09
⚛️ high-energy experiments

Long-term performance of non-ALD MCP-PMTs in the high-radiation environment of ALICE

This paper demonstrates that non-ALD Planacon MCP-PMTs used in the ALICE Fast Interaction Trigger can maintain excellent time resolution up to an integrated anode charge of 2 C/cm² through low-gain operation, while also revealing that their effective aging is partially mitigated by self-recovery during beam-off periods and that pre-irradiation noise characteristics can predict faster aging outliers.

Yury Melikyan for the ALICE Collaboration2026-09-09