⚛️ Category

hep-ex

2101 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

Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from $pp$ collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector

Using 140 fb−1^{-1} of 13 TeV proton-proton collision data collected by the ATLAS detector, this paper reports the first observation of electroweak diboson production in association with a high-mass dijet system in semileptonic final states with a significance of 7.4σ\sigma, measures the corresponding cross-sections and signal strengths consistent with Standard Model predictions, and establishes the first ATLAS exclusion limits on anomalous quartic gauge couplings in this channel using a dimension-8 effective field theory.

ATLAS Collaboration2026-07-16
⚛️ high-energy experiments

Search for decays of the Higgs boson into scalar particles decaying into four or six bb-quarks using $pp$ collisions at s=13 TeV\sqrt{s}= 13\,\mathrm{TeV} with the ATLAS detector

Using 140 fb⁻¹ of 13 TeV proton-proton collision data collected by the ATLAS detector, this study searches for exotic Higgs boson decays into new scalar particles that subsequently decay into four or six bb-quarks, finding no significant excess over Standard Model predictions and setting 95% confidence level upper limits on the relevant production cross-sections and branching ratios.

ATLAS Collaboration2026-07-16
⚛️ high-energy experiments

Search for long-lived particles using displaced vertices of oppositely charged leptons in 140 fb−1^{-1} of pp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector

Using 140 fb−1^{-1} of 13 TeV proton-proton collision data, the ATLAS experiment conducted a search for long-lived particles decaying into displaced oppositely charged lepton pairs within the inner tracker, observing no candidates and setting leading upper limits on production cross-sections for several benchmark models involving Z′Z' bosons and R-parity violating supersymmetry.

ATLAS Collaboration2026-07-16
⚛️ lattice

Examining possible doubly topped baryon configurations

This paper utilizes two-point QCD sum rules to theoretically predict the ground state masses of doubly topped baryon configurations (Ξttu\Xi_{ttu}, Ξttd\Xi_{ttd}, Ωtts\Omega_{tts}, Ωttc\Omega_{ttc}, and Ωttb\Omega_{ttb}), finding them slightly above the sum of their constituent quark masses to provide a reference for future experimental searches at the LHC and FCC.

M. Shekari Tousi, K. Azizi2026-07-16
⚛️ high-energy experiments

The soft volume of ultra-high energy neutrinos experiments

This paper introduces a semi-analytical framework based on a drift-diffusion equation to efficiently map ultra-high-energy neutrino fluxes to event rates by modeling the "soft volume" of through-going muon tracks, offering a fast alternative to Monte Carlo simulations that successfully fits IceCube data and reconciles KM3NeT observations.

Stefano Palmisano, Diego Redigolo, Michele Tammaro, Andrea Tesi2026-07-16
⚛️ nuclear experiments

Evidence for sequential Υ\Upsilon(nS) suppression in light ion collisions

This paper presents the first measurements of Υ\Upsilon(1S), Υ\Upsilon(2S), and Υ\Upsilon(3S) production in oxygen-oxygen and neon-neon collisions at sNN\sqrt{s_\mathrm{NN}} = 5.36 TeV, revealing a significant sequential suppression pattern where excited states are more strongly suppressed than the ground state, providing evidence for quark-gluon plasma formation in light ion collisions.

CMS Collaboration2026-07-16
⚛️ high-energy experiments

Radiation effects on surface and bulk properties of ATLAS18 silicon sensors under low- and high-dose gamma irradiation and annealing

This study comprehensively characterizes the surface and bulk radiation effects, including leakage currents, depletion voltage, and thermal annealing behavior, in ATLAS18 silicon sensors irradiated with gamma rays across a wide dose range from low operational levels to ultra-high doses to ensure their reliability for the ATLAS Inner Tracker at the HL-LHC.

Marcela Mikestikova, Vitaliy Fadeyev, Pavla Federicova, Petr Gallus, Jana Kozakova, Jiri Kroll, Magdalena Kutova, Jiri K (…)2026-07-16