Charged Lepton Flavor Violation: $\mu^- N \to e^- N$ [PowerPoint]
The Charged Lepton Flavor Violation (CLFV) activity at Fermilab is described.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
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The Mu2e Experiment: A Search for Charged Lepton Flavor Violation [PowerPoint]
Progress is described on the search for Charged Lepton Flavor Violation as part of the Mu2e Experiment at Fermilab.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Boson Fermion Nucleus Explanation for Violation of Parity in the Radioactive Decay of Cobalt-60: Monograph #12
In 1957, Chien-Shuing Wu subjected cobalt-60 to supercooled temperatures and a strong magnetic field while measuring radioactive decay. This experiment showed violation of parity— a long-held, fundamental precept in physics stating that nuclear radioactive-decay emission flux will not vary in the solid angle about the nucleus. During Wu’s experiment, beta particles (electrons) exhibited asymmetry, preferentially exiting the cobalt-60 nuclei in the polar region opposite the applied magnetic field. Gamma-ray emissions were anisotropic, preferring to exit the nucleus around the equatorial region. The boson fermion nucleus (BFN) explains the origins of these observed phenomena, where the nuclear structure is pinned in the strong magnetic field with minimal motion in supercooled conditions, while beta particles and gamma rays are emitted from specific locations within the nuclear structure.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Future Parity Violation Program at JLab
Overview Talk On Future Parity Violation Program at JLab.
Chen, Jian-Ping↗
Baryon Number Violation Searches in DUNE
The Deep Underground Neutrino Experiment (DUNE) is an international project that will study neutrinos and search for phenomena predicted by theories Beyond the Standard Model (BSM). DUNE will use a 70-kton liquid argon time projection chamber (LArTPC) located more than a kilometer underground. The bubble chamber like imaging capabilities of the LArTPC technology, in addition to the large size and underground location, allow the experiment to probe many types of rare processes. This poster will summarize DUNE’s sensitivity to the baryon number violating processes of nucleon decay with p→K^+ ν ̅ and n→n ̅ oscillations.
Stokes, Tyler D.↗
Search for CP-violating Neutrino Non-Standard Interactions with the NOvA Experiment
The phenomenon of neutrino oscillations is the most significant evidence in experimental particle physics that points to the existence of Physics Beyond the Standard Model, and it opened a window for several and interesting new investigations in the field of neutrino physics. Among the possibilities, Non-Standard Interactions (NSI) are an extension of the neutrino matter effect leading to a rich phenomenology. These NSI are expected to modify the propagation of neutrinos through matter. The current open questions in the neutrino oscillation model rely heavily on how neutrinos interact with matter, and NSI could induce possible effects. This talk reports the preliminary search for CP-violating NSI of neutrinos with matter at the NOvA Experiment. Data from $\nu_{\mu}(\bar{\nu}_{\mu})\rightarrow\nu_{\mu}(\bar{\nu}_{\mu})$ and $\nu_{\mu}(\bar{\nu}_{\mu})\rightarrow\nu_{e}(\bar{\nu}_{e})$ oscillation channels are used to measure the effect of the NSI parameters $\varepsilon_{e\mu}$ or $\v arepsilon_{e\tau}$ over the 810 km baseline of the experiment.
43 PARTICLE ACCELERATORS↗
Towards a Next Generation Search for Time-Reversal Violation Using Optically Addressable Nuclei in Cryogenic Solids (Final Technical Report, September 2018 - August 2023)
Certain rare pear-shaped nuclei have unmatched sensitivity to new kinds of forces between subatomic particles that are not the same when the arrow of time is reversed. Such forces are believed to be responsible for the near absence of antimatter in the observable Universe. These rare isotopes, some for the first time, will be produced in large numbers at the Facility for Rare Isotope Beams currently under operating at Michigan State University providing an unprecedented opportunity to probe for new physics. In anticipation, we are using abundant isotopes to develop new techniques to manipulate nuclei embedded inside an optically transparent solid at cryogenic temperatures. Implantation into a solid, such as neon and argon, is potentially an effective way to both efficiently capture and repeatedly probe the small number of rare nuclei, such as radium and protactinium. An optically transparent host medium at cryogenic temperatures would allow for the laser manipulation of the nuclei in a thermally quiet and stable environment for a wide variety of guest species such as polar molecules. In such systems, the nuclei are exposed to extraordinarily large electric fields and magnetic field gradients, which significantly amplifies the measurability of certain time-reversal violating effects. The potential sensitivity of this new approach could be at least a few hundred times greater than the current leading experiment which uses stable mercury atoms. We report on the design considerations and preliminary performance of an instrument used to produce and implant molecules into a frozen argon solid.
73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
NOvA Constraints on CP-Violating Non-Standard Interactions
This poster shows the results of work of search for charge-parity (CP) symmetry violating non-standard interactions (NSI) of neutrinos with matter using the NOvA Experiment, and examines their effects on the determination of the standard oscillation parameters.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
CP violation searches and distributed computing development with the Belle II Experiment at the University of Mississippi and Brookhaven National Laboratory (Final Report)
This report reflects the work performed at the University of Mississippi under the support of DOE EPSCoR grant DE‐SC0021274 during the period of September 2020 through August 2024, including a one-year, no-cost extension. A summary of the research outcomes is given, with reference to the project goals as stated in the proposal. This successful project supported the mission of the DOE High Energy Physics program by leveraging the complimentary expertise of researchers at the University of Mississippi and Brookhaven National Lab to search for CP violation in charmed baryon decays using data from the Belle II experiment and to provide vital support for Belle II distributed computing.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Towards Baryon-Number Violation in Nuclei from Lattice QCD
I will present strategies and exploratory calculations of baryon-number violating matrix elements in nuclei from lattice QCD
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Twenty-third Conference on Flavor Physics and CP Violation (FPCP 2025) at the University of Cincinnati
The High Energy Physics (HEP) group at the University of Cincinnati (UC) hosted the ``Twenty-third Conference on Flavor Physics and CP Violation'' (FPCP 2025), on June 2-6, 2025. The FPCP conference is one of the highest visibility conferences in flavor physics, drawing both theory and experimental participants from all over the world.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Neutrinoless double beta decay and Lepton Number Violation
Neutrinoless double beta decay and Lepton Number Violation
Cirigliano, Vincenzo↗
Bounds on Lorentz Violation Parameters in the DUNE Experiment
The Standard Model (SM) has been highly successful in describing fundamental interactions, yet phenomena like neutrino oscillations point to physics beyond its framework. Among the proposed extensions, Lorentz invariance violation (LIV) stands out as a compelling possibility. Long-baseline neutrino experiments such as DUNE, with its 1300 km baseline, offer a promising setting to test LIV effects with high precision. In this work, we evaluate DUNE s sensitivity to LIV by analyzing event rates and oscillation probabilities using the GLoBES framework. A custom implementation of LIV parameters was employed to derive bounds on the aa and cc matrices, identifying the parameter values that lead to a 10% deviation from the standard oscillation probability. Our results show partial agreement with previous studies for the aa parameters, while deviations in the cc parameters highlight the impact of differing methodologies and sensitivities. These findings reinforce the relevance of LIV searches and motivate further theoretical and experimental efforts in this direction.
Cruz, Thiago. [Tech. Fed. Parana U.]↗
CP Violation in the Neutrino Sector
his talk presents an overview of current and future measurements of CP Violation in the neutrino sector
Norrick, Anne [Fermilab] (ORCID:0000000199321012)↗
CP Violation in the Neutrino Sector
his talk presents an overview of current and future measurements of CP Violation in the neutrino sector
Norrick, Anne [Fermilab] (ORCID:0000000199321012)↗
Exploring for New Physics using Charged Lepton Flavor Violation
The neutrino-less conversion of charged leptons, e.g. μ→e+gamma, μ→eee, μN→eN, has never been observed. These Charged Lepton Flavor Violating processes offer deep probes of new physics parameter space. Next generation experiments offer sensitivities that are orders of magnitude better than current limits. An overview of planned experiments is provided, concentrating on experiments utilizing intense muon sources, where the largest improvements are expected. These experiments will probe effective new physics mass scales up to 10,000 TeV/c2, well beyond what can be directly probed at colliders.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗