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Physics#Particle Physics, Beyond Standard Model🔬 ResearchAnalyzed: Jan 3, 2026 06:14

Loop-Level Lepton Flavor Violation and Diphoton Signals in the Minimal Left-Right Symmetric Model

Published:Dec 31, 2025 18:14
1 min read
ArXiv

Analysis

This paper explores the lepton flavor violation (LFV) and diphoton signals within the minimal Left-Right Symmetric Model (LRSM). It investigates how the model, which addresses parity restoration and neutrino masses, can generate LFV effects through the mixing of heavy right-handed neutrinos. The study focuses on the implications of a light scalar, H3, and its potential for observable signals like muon and tauon decays, as well as its impact on supernova signatures. The paper also provides constraints on the right-handed scale (vR) based on experimental data and predicts future experimental sensitivities.
Reference

“The paper highlights that the right-handed scale (vR) is excluded up to 2x10^9 GeV based on the diphoton coupling of H3, and future experiments could probe up to 5x10^9 GeV (muon experiments) and 6x10^11 GeV (supernova observations).”

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Physics#Dark Matter, Higgs Physics, LHC🔬 ResearchAnalyzed: Jan 3, 2026 08:40

Probing Dark Jets from Higgs Decays at LHC

Published:Dec 31, 2025 12:00
1 min read
ArXiv

Analysis

This paper explores a novel search strategy for dark matter, focusing on a specific model where the Higgs boson decays into dark sector particles that subsequently produce gluon-rich jets. The focus on long-lived dark mesons decaying into gluons and the consideration of both cascade decays and dark showers are key aspects. The paper highlights the importance of trigger selection for detection and provides constraints on the branching ratios at the high-luminosity LHC.
Reference

“The paper finds that appropriate trigger selection constitutes a crucial factor for detecting these signal signatures in both tracker system and CMS muon system. At the high-luminosity LHC, the exotic Higgs branching ratio to cascade decays (dark showers) can be constrained below $\mathcal{O}(10^{-5}-10^{-1})$ [$\mathcal{O}(10^{-5}-10^{-2})$] for dark meson proper lifetimes $c\tau$ ranging from $1$ mm to $100$ m.”

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Physics#Superconductivity, Condensed Matter Physics🔬 ResearchAnalyzed: Jan 3, 2026 16:41

Evidence for Spontaneous Magnetic Fields in Sr2RuO4 Supporting Multicomponent Superconductivity

Published:Dec 31, 2025 03:23
1 min read
ArXiv

Analysis

This paper provides experimental evidence, using muon spin relaxation measurements, that spontaneous magnetic fields appear in the broken time reversal symmetry (BTRS) superconducting state of Sr2RuO4 around non-magnetic inhomogeneities. This observation supports the theoretical prediction for multicomponent BTRS superconductivity and is significant because it's the first experimental demonstration of this phenomenon in any BTRS superconductor. The findings are crucial for understanding the relationship between the superconducting order parameter, the BTRS transition, and crystal structure inhomogeneities.
Reference

“The study allowed us to conclude that spontaneous fields in the BTRS superconducting state of Sr2RuO4 appear around non-magnetic inhomogeneities and, at the same time, decrease with the suppression of Tc.”

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Physics#Particle Physics, Detector Development🔬 ResearchAnalyzed: Jan 3, 2026 16:45

LYSO Converter for Photon Detection in Muon Decay Search

Published:Dec 30, 2025 13:22
1 min read
ArXiv

Analysis

This paper is significant because it addresses the critical need for high-precision photon detection in future experiments searching for the rare muon decay μ+ → e+ γ. The development of a LYSO-based active converter with optimized design and excellent performance is crucial for achieving the required sensitivity of 10^-15 in branching ratio. The successful demonstration of the prototype's performance, exceeding design requirements, is a promising step towards realizing these ambitious experimental goals.
Reference

“The prototypes exhibited excellent performance, achieving a time resolution of 25 ps and a light yield of 10^4 photoelectrons, both substantially surpassing the design requirements.”

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Physics#Particle Physics, SMEFT🔬 ResearchAnalyzed: Jan 3, 2026 19:05

Constraints on SMEFT Operators from Z Decay

Published:Dec 29, 2025 06:05
1 min read
ArXiv

Analysis

This paper is significant because it explores a less-studied area of SMEFT, specifically mixed leptonic-hadronic Z decays. It provides complementary constraints to existing SMEFT studies and offers the first process-specific limits on flavor-resolved four-fermion operators involving muons and bottom quarks from Z decays. This contributes to a more comprehensive understanding of potential new physics beyond the Standard Model.
Reference

“The paper derives constraints on dimension-six operators that affect four-fermion interactions between leptons and bottom quarks, as well as Z-fermion couplings.”

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Research Paper#Dark Matter, Muon Collider, Particle Physics🔬 ResearchAnalyzed: Jan 3, 2026 19:09

Muonphilic Dark Matter at a Muon Collider

Published:Dec 29, 2025 02:46
1 min read
ArXiv

Analysis

This paper investigates the potential of future muon colliders to probe asymmetric dark matter (ADM) models that interact with muons. It explores various scenarios, including effective operators and UV models with different couplings, and assesses their compatibility with existing constraints and future sensitivities. The focus on muon-specific interactions makes it relevant to the unique capabilities of a muon collider.
Reference

“The paper explores both WEFT-level dimension-6 effective operators and two UV models based on gauged $L_μ- L_τ$.”

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Research#Physics🔬 ResearchAnalyzed: Jan 4, 2026 06:49

Total decay rate of a muon bound to a light nucleus

Published:Dec 28, 2025 17:51
1 min read
ArXiv

Analysis

This article title suggests a focus on theoretical physics, specifically the study of muon decay within the context of atomic nuclei. The 'ArXiv' source indicates this is a pre-print publication, likely a research paper. The title is concise and descriptive, clearly indicating the subject matter.

Key Takeaways

    Reference

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    Physics#Neutrino Physics, Flavor Physics, Beyond the Standard Model🔬 ResearchAnalyzed: Jan 3, 2026 20:09

    Minimal A4 Seesaw Model with Testable Neutrino Mass Sum Rules

    Published:Dec 26, 2025 19:00
    1 min read
    ArXiv

    Analysis

    This paper presents a flavor model using A4 symmetry and a type-II seesaw mechanism. The key significance lies in its ability to predict the absolute neutrino mass spectrum based on a sum rule, linking it to lepton mixing parameters and potentially observable phenomena like neutrinoless double beta decay. The model's constrained nature makes it experimentally testable, offering a framework to connect neutrino properties with lepton mixing and lepton-number-violating processes.
    Reference

    “The model's sum rule fully determines the absolute neutrino mass spectrum, and the model provides a tightly constrained and experimentally testable framework.”

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    Research#Physics🔬 ResearchAnalyzed: Jan 10, 2026 07:15

    Spin Asymmetries in Deep-Inelastic Scattering Examined

    Published:Dec 26, 2025 09:47
    1 min read
    ArXiv

    Analysis

    This research delves into the complex world of particle physics, specifically analyzing spin asymmetries in deep-inelastic scattering experiments. The work contributes to our understanding of the internal structure of matter at a fundamental level.
    Reference

    “The study focuses on Dihadron Transverse-Spin Asymmetries in Muon-Deuteron Deep-Inelastic Scattering.”

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    Research#llm📝 BlogAnalyzed: Dec 25, 2025 14:52

    AdamW, Muon, and ROOT: Introducing ROOT, a Robust Orthogonalized Optimizer for Neural Network Training

    Published:Dec 25, 2025 14:48
    1 min read
    Qiita AI

    Analysis

    This article introduces the ROOT optimizer, presented in the paper "ROOT: Robust Orthogonalized Optimizer for Neural Network Training." The article highlights the problem of instability often encountered during the training of large language models (LLMs) and suggests that the design of the optimization algorithm itself is a contributing factor. While the article is brief, it points to a potentially significant advancement in optimizer design for LLMs, addressing a critical challenge in the field. Further investigation into the ROOT algorithm's performance and implementation details would be beneficial to fully assess its impact.
    Reference

    “"ROOT: Robust Orthogonalized Optimizer for Neural Network Training"”

    PermalinkQiita AI
    Research#physics🔬 ResearchAnalyzed: Jan 4, 2026 10:07

    Synthesis of a high intensity, superthermal muonium beam for gravity and laser spectroscopy experiments

    Published:Dec 22, 2025 22:59
    1 min read
    ArXiv

    Analysis

    This article reports on the creation of a specialized muonium beam. The focus is on its application in gravity and laser spectroscopy experiments, suggesting potential advancements in fundamental physics research. The 'superthermal' aspect implies a specific energy range, likely enhancing experimental precision. The source being ArXiv indicates a pre-print, meaning peer review is pending.
    Reference

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    Research#Particle Physics🔬 ResearchAnalyzed: Jan 10, 2026 09:22

    Analysis of the $B^0\to K^{*0}\mu^+\mu^-$ Decay: A Comprehensive Study

    Published:Dec 19, 2025 20:44
    1 min read
    ArXiv

    Analysis

    This article presents a comprehensive analysis of a specific particle decay, likely contributing to the understanding of fundamental physics. While the article's impact depends heavily on its findings, the research focus suggests a contribution to a core scientific field.
    Reference

    “The analysis focuses on the $B^0\to K^{*0}\mu^+\mu^-$ decay.”

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    Research#physics🔬 ResearchAnalyzed: Jan 4, 2026 08:50

    The role of charm and unflavored mesons in prompt atmospheric lepton fluxes

    Published:Dec 19, 2025 18:37
    1 min read
    ArXiv

    Analysis

    This article likely discusses the contribution of charm and unflavored mesons to the flux of leptons (like muons and electrons) produced promptly in the atmosphere. Prompt leptons are those produced directly in particle interactions, as opposed to those from the decay of longer-lived particles. The research probably involves theoretical calculations and/or simulations to understand the composition and behavior of these fluxes.
    Reference

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    Research#Superconductivity🔬 ResearchAnalyzed: Jan 10, 2026 09:44

    Muon Spin Spectroscopy Unveils Superconducting State of SnAs

    Published:Dec 19, 2025 06:56
    1 min read
    ArXiv

    Analysis

    This article discusses the application of muon spin spectroscopy to investigate the intermediate state of the type-I superconductor SnAs. The research provides valuable insights into the fundamental properties of this material and potentially contributes to the broader understanding of superconductivity.
    Reference

    “The research uses Muon Spin Spectroscopy.”

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    Research#llm🔬 ResearchAnalyzed: Jan 4, 2026 08:00

    Muon is Provably Faster with Momentum Variance Reduction

    Published:Dec 18, 2025 14:38
    1 min read
    ArXiv

    Analysis

    This article likely discusses a new optimization technique for the Muon algorithm, focusing on reducing variance in momentum to improve its speed. The use of "provably faster" suggests a rigorous mathematical analysis and guarantees of performance improvement. The source, ArXiv, indicates this is a research paper.

    Key Takeaways

      Reference

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      Research#Particle Physics🔬 ResearchAnalyzed: Jan 4, 2026 09:53

      Self-consistent bounds on Beyond the Standard Model bosons from spectroscopy of muonic atoms with magic nuclei

      Published:Dec 18, 2025 14:35
      1 min read
      ArXiv

      Analysis

      This article likely presents research on particle physics, specifically exploring constraints on hypothetical bosons beyond the Standard Model. The methodology involves precision spectroscopy of muonic atoms (atoms where an electron is replaced by a muon) using magic nuclei, which are nuclei with specific numbers of protons and neutrons that exhibit enhanced stability. The term "self-consistent bounds" suggests the researchers are aiming for rigorous and reliable limits on the properties of these new bosons.
      Reference

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