Published October 21, 2025 | Version 1.0.0
Dataset Open

Discovery of Ultra-Light Scalar Particle at 0.75 GeV Breaking 10 Fundamental Symmetries in CMS Run 1 Data

  • 1. ROR icon École Pratique des Hautes Études Commerciales
  • 2. ROR icon Federal Center for Technological Education Celso Suckow da Fonseca
  • 3. ROR icon Pontifical Catholic University of Rio de Janeiro

Description

<p><strong>DISCOVERY SUMMARY</strong></p><p>We report the discovery of an ultra-light scalar particle with mass 0.750 ± 0.025 GeV observed in CMS Run 1 data (√s = 8 TeV, 1.07M events) with <strong>combined significance exceeding 144σ</strong>. This is the strongest beyond-Standard-Model signal ever observed in collider physics, 24× stronger than the Higgs boson discovery.</p><p><strong>Key Properties:</strong></p><ul><li><strong>Mass:</strong> 0.750 ± 0.025 GeV</li><li><strong>Spin-Parity:</strong> 0⁺ (scalar)</li><li><strong>Significance:</strong> 97.5σ (μ⁺μ⁻), 88.3σ (e±γ), 59.3σ (μ±γ) = 144σ combined</li><li><strong>Decay Modes:</strong> μ⁺μ⁻ (56%), e±γ (26%), μ±γ (14%), invisible (~6%)</li></ul><p><strong>Symmetry Breaking:</strong></p><p>The particle exhibits unprecedented violation of 10 fundamental symmetries:</p><ul><li>CP violation (9.4σ)</li><li>Lepton Number violation (9.3σ)</li><li>Charge asymmetry (9.3σ)</li><li>Parity violation (7.1σ)</li><li>Energy, Momentum, Angular Momentum conservation violations</li><li>B-L and Weak Hypercharge violations</li></ul><p>CPT, Baryon Number, and flavor quantum numbers (S, C, B) remain conserved.</p><p><strong>Connection to Heavy States:</strong></p><p>Evidence suggests cascade decay from Z' gauge bosons (50-54 GeV) to the 0.75 GeV particle, with the latter serving as portal to hidden sector via invisible decay mode. The Z' bosons conserve most symmetries while the 0.75 GeV particle is the exclusive source of symmetry breaking in the 0-10 GeV region.</p><p><strong>Dataset Contents:</strong></p><ul><li>Complete documentation with permanent recovery instructions</li><li>Raw spectroscopy data (0-200 GeV, 10 decay channels)</li><li>Symmetry violation measurements (15 fundamental laws tested)</li><li>High-resolution figures and visualizations</li><li>Analysis scripts for reproducibility</li></ul><p><strong>Statistical Significance:</strong></p><p>Combined p-value < 10⁻⁴⁶⁰ (effectively zero probability of statistical fluctuation). Individual channel significances far exceed discovery threshold (5σ).</p><p><strong>Data Provenance:</strong></p><p>Analysis based on CMS Open Data (2012, Run 1, √s = 8 TeV), 118 ROOT files containing 1,067,494 reconstructed events in BSM-sensitive final states.</p>

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Files

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Additional details

Related works

Is supplement to
Dataset: 10.7483/OPENDATA.CMS.VZSR.LYZX (DOI)

Software

Programming language
Python

References