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5th New Physics Opportunities at Neutrino Facilities Workshop (NPN 2025)
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US/Eastern
Alexandre Sousa
(University of Cincinnati (US))
Description
NPN 2025 Workshop Photo (High-Res)
This workshop is the fifth in the series titled New Physics Opportunities at Neutrino Facilities (NPN), which aims to bring together both theorists and experimentalists and actively discuss new opportunities at the current and next-generation neutrino facilities in probing new physics beyond the Standard Model (BSM).
The workshop's focus this year will be on understanding to which level current and future experiments can measure deviations from unitarity of the three-neutrino mixing matrix, and how we can interpret theoretically any deviations observed as new physics.
The NPN 2025 workshop will be held June 18-20, 2025 in Cincinnati, Ohio, USA, organized by the University of Cincinnati.
The standard registration fee is $100, and the Early-Career (Students, Postdoctoral Fellows,...) is $50.
The deadline for workshop registration is June 4, 2025.
To incentivize Early-Career participation, we will hold a dedicated 2-hour session for contributed talks on the afternoon of Thursday, June 19. The talks will be selected from abstracts submitted here, with the selection criteria taking into consideration how the proposed abstract fits with the agenda of the workshop, and the career stage of the abstract submitter. Travel support will be available for Early-Career speakers subject to funding availability.
The deadline for Early-Career talk abstract submissions in the Call for Abstracts page is May 26, 2025.
Links to previous workshops:
NPN 2024: https://indico.ibs.re.kr/event/649/
NPN 2023: https://indico.slac.stanford.edu/event/7400/
NPN 2022: https://indico.cern.ch/event/1103445/
NPN 2019: https://indico.cern.ch/event/797505/
Organizing Committee:
Adam Aurisano (Cincinnati)
Conor Henderson (Cincinnati)
Pedro Machado (Fermilab)
Alexandre Sousa, Chair (Cincinnati)
Jure Zupan (Cincinnati)
Steering Group of the NPN Workshop Series:
Brian Batell (University of Pittburgh)
André Luiz de Gouvêa (Northwestern University)
Jong-Chul Park (Chungnam National University, Korea)
Alexandre Sousa (University of Cincinnati)
Yun-Tse Tsai (SLAC)
Jaehoon Yu (University of Texas at Arlington)
Participants
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08:00
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09:00
Registration and Light Breakfast
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09:00
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10:30
Plenary 1 Clifton Court Hall 1170 (UC)
Clifton Court Hall 1170
UC
Plenary Session 1
Convener: Prof. Alexandre Sousa (University of Cincinnati (US))-
09:00
Welcome - Theresa Culley, A&S Divisional Dean for the Natural Sciences 5m
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09:05
Welcome - Leigh Smith, Department of Physics Head 5m
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09:10
Workshop Logistics 5mSpeaker: Prof. Alexandre Sousa (University of Cincinnati (US))
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09:15
PMNS Unitarity and BSM Physics 40mSpeakers: Mark Ross-Lonergan, Mark Ross-Lonergan
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09:55
Long-Baseline Neutrino Measurements and Implications on Unitarity 35mSpeaker: Zoya Vallari (Ohio State University)
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09:00
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10:30
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11:00
Coffee Break
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11:00
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12:30
Plenary 2 Clifton Court Hall 1170 (UC)
Clifton Court Hall 1170
UC
Convener: Matheus Hostert-
11:00
Constraining Unitarity with Atmospheric Neutrino Measurements 30mSpeaker: Linyan Wan
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11:30
New Physics Prospects with Short-Baseline Neutrino Measurements 30mSpeaker: Gray Putnam
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12:00
New Physics with Reactor Neutrino Measurements 30mSpeaker: Ohana Benevides Rodrigues (IIT)
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11:00
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12:30
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14:00
Lunch
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14:00
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15:30
Plenary 3 Braunstein Hall 301 (UC)
Braunstein Hall 301
UC
Convener: Adam Aurisano (University of Cincinnati)- 14:00
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14:30
Unitarity constraints from Colliders and their Impact on New Physics from Neutrino Measurements 30mSpeaker: DANIEL NAREDO TUERO
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15:00
New Physics from Supernova Measurements 30mSpeaker: James Kneller (NC State University)
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15:30
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15:40
Workshop Photo
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15:40
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16:00
Coffee Break
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16:00
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17:30
Plenary 4 Braunstein Hall 301 (UC)
Braunstein Hall 301
UC
Convener: Dr Doojin Kim (Texas A & M University (US))- 16:00
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16:30
Neutrino physics at Forward Experiments at the LHC 30mSpeaker: Roshan Mammen Abraham (University of California Irvine (US))
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17:00
BSM Searches @ protoDUNE 30m
The exceptional resolution and particle identification capabilities of Liquid Argon Time Projection Chambers (LArTPCs) make them well-suited for probing weakly interacting particles in Beyond the Standard Model (BSM) scenarios. Recent investigations suggest that the DUNE far detector prototypes may be sensitive to long-lived BSM particles produced at the T2 target and exposed to the 400 GeV SPS beam at CERN. As a proof-of-principle, we explore the detection of neutrinos — known weakly interacting particles — to assess the detector performance. Ongoing feasibility studies using one of the ProtoDUNE detectors aim to evaluate its capabilities for future BSM searches. In this talk, we present the current status of our analysis and discuss the prospects for extending this program to broader BSM scenarios.
Speaker: Hamza Amar Es-sghir
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08:00
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09:00
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09:00
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10:45
Plenary 5 Clifton Court Hall 1170 (UC)
Clifton Court Hall 1170
UC
Convener: Linyan Wan- 09:00
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09:25
Beam Dump Experimental Prospects 25mSpeakers: Doojin Kim, Dr Doojin Kim (Texas A & M University (US))
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09:50
European Strategy Planning 30mSpeakers: Albert De Roeck (Imperial College (GB)), Albert De Roeck (CERN)
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10:20
Physics with Tau Neutrino Probes 25mSpeakers: Adam Aurisano (University of Cincinnati), Adam Jude Aurisano (University of Cincinnati (US))
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10:45
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11:10
Coffee Break
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11:10
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12:30
Plenary 6 Clifton Court Hall 1170 (UC)
Clifton Court Hall 1170
UC
Convener: Albert De Roeck (CERN)-
11:10
Untangling Systematic Uncertainties from BSM Physics 25mSpeaker: Dr Peter Denton (Brookhaven National Laboratory)
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11:35
Constraining NSI with NC Interactions at LBL Experiments 25mSpeaker: Pedro Machado (Fermilab)
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12:00
The Role of Global Fits in New Physics Probes 30mSpeaker: Georgia Karagiorgi
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11:10
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12:30
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14:00
Lunch
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14:00
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15:00
Plenary 7 Clifton Court Hall 1170 (UC)
Clifton Court Hall 1170
UC
Convener: Mark Ross-Lonergan-
14:00
Recent Results from MicroBooNE 30mSpeakers: Bannanje Nitish Nayak, Bannanje Nitish Nayak
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14:30
Status of JUNO and Physics Prospects 30mSpeaker: Juan Pedro Ochoa (University of California Irvine (US))
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14:00
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15:00
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15:30
Coffee Break
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15:30
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17:32
Contributed Talks Clifton Court Hall 1170 (UC)
Clifton Court Hall 1170
UC
Convener: Pedro Machado (Fermilab)-
15:30
Tau Tridents at Accelerator Neutrino Facilities 17m
We present the first detailed study of Standard Model neutrino tridents involving tau leptons at the near detectors of accelerator neutrino facilities. The rates of these processes were previously thought to be negligible, even at future facilities. Our full $2\to 4$ calculation, including both coherent and incoherent scatterings, reveals that
the DUNE near detector could observe a considerable number of tau tridents, which is an important background to new physics searches. We identify promising kinematic features that may allow distinction of tau tridents from the usual neutrino charged-current background at DUNE, and thus establish the observation of tau tridents for the first time. We also comment on the detection prospects at other accelerator and collider neutrino experiments.Speaker: Diego Lopez Gutierrez (Washington University in St Louis) -
15:47
Accelerator-Based Dark Matter Searches with the DUNE Near Detector and Beyond 17m
Accelerator-based experiments provide a versatile platform for probing dark matter models that interact feebly with Standard Model particles. The DUNE Near Detector (ND), designed primarily for precision neutrino property measurements, is also poised to play a pivotal role in exploring sub-GeV scale dark matter via multiple search strategies. Leveraging the high-intensity proton beam, DUNE ND can investigate dark matter signatures through both standard operational mode and potentially a dedicated beam dump configuration in which neutrino flux is greatly reduced while retaining and increasing dark sector particle flux, thanks to the shortened baseline. The DUNE-PRISM capability further enriches this program by enabling off-axis measurements that help disentangle dark matter signals from neutrino-induced backgrounds, thanks to its rapidly falling flux.
Complementary to DUNE’s program, short-baseline experiments such as DAMSA (DArk Messenger Searches at Accelerator) are being developed, leveraging an extremely short, tabletop-scale baseline that enhances sensitivity to dark sector particles with relatively short lifetimes. We discuss the synergy between these experiments, the anticipated sensitivity reaches in the dark sector particle parameter space, and the potential to illuminate the nature of dark matter.
Speaker: Wooyoung Jang (University of Texas at Arlington) -
16:04
A flavorful and dark cascade for low-scale leptogenesis 17m
I will discuss a novel low-scale leptogenesis mechanism involving CP-asymmetric (but lepton-number-conserving) decays of sterile neutrinos, followed by a neutrino-generation-philic dark-sector cascade that generates a surplus of visible baryon number. Relevant model-building considerations and constraints will be discussed in detail.
Speaker: Tony Menzo -
16:21
From the Mediterranean to Antarctica, via New Physics? 17m
The KM3NeT collaboration recently reported the observation of KM3-230213A, a neutrino event with an energy of 220 PeV, nearly an order of magnitude more energetic than the highest-energy neutrino in IceCube’s catalog. Despite its larger effective area and longer data-taking period, IceCube has not observed similar events, leading to a tension quantified between ~2$\sigma$ and 3.5$\sigma$, depending on the type of neutrino source.
The 220 PeV neutrino detected at KM3NeT has traversed approximately 147 km through rock and sea, whereas neutrinos from the same location in the sky would cross only about 14 km of ice to reach IceCube. In this talk, I will show how differences in propagation distance can help resolve this tension. Specifically, I will present a scenario where the source emits sterile neutrinos that partially convert to active neutrinos via oscillations. I will present two such mechanisms: one where a new physics matter potential induces a resonance in sterile-to-active transitions, and another involving off-diagonal neutrino non-standard interactions. In both cases, oscillations over ~100 km enhance the active neutrino flux at KM3NeT with respect to the flux at IceCube. Overall, we propose the exciting possibility that neutrino telescopes have already started detecting signatures of physics beyond the Standard Model.
Speaker: Dibya S. Chattopadhyay (Oklahoma State University) -
16:38
NSI in Long-baseline Neutrino Experiments 17m
Long-baseline neutrino experiments are currently measuring the oscillation parameters with unprecedented precision. Recent standard oscillation results from NOvA and T2K, however, show a moderate tension in the preferred value of the CP-violating phase $\delta_{\text{CP}}$, motivating the exploration of physics beyond the standard oscillation framework. Non-Standard Interactions (NSI) in neutrino propagation through matter provide a well-motivated extension of the effective matter potential, altering the neutrino oscillation probabilities. NSI introduce new sources of CP violation and have been proposed as a candidate to alleviate the tension in $\delta_{\text{CP}}$ between NOvA and T2K. Furthermore, the study and constraint of sub-leading new physics effects are necessary to precisely extract the neutrino oscillation parameters. This talk presents recent NSI results from NOvA and their impact on the determination of $\delta_{\text{CP}}$ and the neutrino mass ordering. Prospects for further NSI searches with long-baseline oscillation experiments, including a joint NOvA-T2K NSI fit, as well as with the future flagship DUNE experiment, are also discussed.
Speaker: Dr Luiz Ricardo Prais (University of Cincinnati) -
16:55
Right-Handed Neutrino Masses from the Electroweak Scale 17m
We explore the possibility that the right-handed neutrino Majorana mass originates from electroweak symmetry breaking. Working within an effective theory with two Higgs doublets, nonzero lepton number is assigned to the bilinear operator built from the two Higgs fields, which is then coupled to the right-handed neutrino mass operator. In tandem with the neutrino Yukawa coupling, following electroweak symmetry breaking a seesaw mechanism operates, generating the light SM neutrino masses along with right-handed neutrinos with masses below the electroweak scale. This scenario leads to novel phenomenology in the Higgs sector, which may be probed at the LHC and at future colliders. There are also interesting prospects for neutrinoless double beta decay and lepton flavor violation. We also explore some theoretical aspects of the scenario, including the technical naturalness of the effective field theory and ultraviolet completions of the right-handed neutrino Majorana mass.
Speaker: Wenjie Huang (University of Pittsburgh) -
17:12
Enhancing Solar Neutrino Sensitivity with Neutron Tagging 17m
Solar neutrinos offer crucial insights into neutrino properties and serve as a powerful probe of flavor oscillations in matter. However, detecting them requires effective suppression of backgrounds. One of these is spallation backgrounds—beta decays of unstable isotopes produced by cosmic-ray muons— which pose a major challenge above 5 MeV. We show that neutron tagging, made possible by the recent addition of dissolved gadolinium, provides a powerful new method to identify and reject these backgrounds. This technique is particularly relevant for future shallower detectors like Hyper-Kamiokande and JUNO.
Speaker: Obada Nairat
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15:30
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18:30
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20:30
Workshop Dinner
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09:00
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10:45
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09:00
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10:30
Plenary 8 Clifton Court Hall 1170 (UC)
Clifton Court Hall 1170
UC
Convener: Georgia Karagiorgi- 09:00
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09:30
Status of Coherent Neutrino Scattering Measurements and BSM prospects 30mSpeakers: Daniel Pershey, Daniel Pershey
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10:00
Neutrino Magnetic Moment, Polarizability, and Charge Radius 30mSpeaker: Sam Carey (Wayne State University)
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10:30
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11:00
Coffee Break
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11:00
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11:15
NPN 2026
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11:15
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12:15
Discussion on Experimental Prospects for Unitarity Probes and Theoretical Interpretations of Results Clifton Court Hall 1170 (UC)
Clifton Court Hall 1170
UC
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12:15
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12:30
Closeout
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09:00
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10:30
