Yuri Kamyshkov
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Research Interests
Yuri Kamyshkov has a total of 83 co-authors. Here are the top co-authors by number of shared publications:
- Joshua Lawrence Barrow
University of Minnesota Twin Cities
3 shared publications - Leah J. Broussard
Oak Ridge National Laboratory
3 shared publications - Louis Varriano
Argonne National Laboratory
3 shared publications - Valentina Santoro
European Spallation Source, Lund, Sweden
3 shared publications - Zurab Berezhiani
INFN, Laboratori Nazionali del Gran Sasso
3 shared publications David Milstead
Stockholm University
2 shared publications
Latest Publications
- Open Access
- 28 May 2026
- Published by American Physical Society (APS) in Physical Review D
- Vol. 113 (9)
Avoiding blindness in baryon number violating processes: Free-beam and intranuclear paths to neutron-antineutron transitions
Experimental searches for neutron-antineutron ( n → n ¯ ) transitions can be considered via two approaches: conversion in free-neutron beams and intranuclear transformation leading to matter instability in large-mass detectors. Plans for next-generation searches make it timely to highlight the complementarity, necessity, and limitations of each method. Converting the bound neutron limit into one for free neutrons traditionally utilizes nucleus-specific estimates of the in-medium suppression of n → n ¯ , obtained within mean-field theory under a single-operator assumption. This paper highlights how this suppression can be scenario-dependent, which can lead to deviations from the standard approach that can span several orders of magnitude. A further goal of the paper is to point out the need for a broader phenomenology program for n → n ¯ that is akin to those developed for electric dipole moments and other systems for which short-distance new physics must be studied in medium. We find that moderate deviations from the standard suppression factor arise generically via multioperator interference effects with the largest enhancements corresponding to regions of parameter space with partial phase alignment between operator contributions.
- 28 May 2026
- Published by American Physical Society (APS) in Physical Review D
- Vol. 113 (9)
Open AccessAvoiding blindness in baryon number violating processes: Free-beam and intranuclear paths to neutron-antineutron transitions
Experimental searches for neutron-antineutron ( n → n ¯ ) transitions can be considered via two approaches: conversion in free-neutron beams and intranuclear transformation leading to matter instability in large-mass detectors. Plans for next-generation searches make it timely to highlight the complementarity, necessity, and limitations of each method. Converting the bound neutron limit into one for free neutrons traditionally utilizes nucleus-specific estimates of the in-medium suppression of n → n ¯ , obtained within mean-field theory under a single-operator assumption. This paper highlights how this suppression can be scenario-dependent, which can lead to deviations from the standard approach that can span several orders of magnitude. A further goal of the paper is to point out the need for a broader phenomenology program for n → n ¯ that is akin to those developed for electric dipole moments and other systems for which short-distance new physics must be studied in medium. We find that moderate deviations from the standard suppression factor arise generically via multioperator interference effects with the largest enhancements corresponding to regions of parameter space with partial phase alignment between operator contributions.
- Open Access
- 30 October 2024
- Published by American Physical Society (APS) in Physical Review D
- Vol. 110 (7)
Improved limits on transformation from the Spallation Neutron SourceConversions between neutrons n and dark matter candidate sterile neutrons n ′ have been proposed as a mechanism for baryon number B violation. In the case that there is a small mass difference Δ m between the n and the n ′ states, oscillations can be induced by compensating for Δ m with a magnetic field. A search for such neutron oscillations was performed at the Spallation Neutron Source by looking for anomalous neutron transmission through a strongly absorbing cadmium wafer inside of a 6.6 T magnet. The approach described here saw no regenerated neutrons above background, which provides an improved limit for neutron–sterile neutron transformations for a range of Δ m between 0.1 and 1000 neV. Published by the American Physical Society 2024
- 30 October 2024
- Published by American Physical Society (APS) in Physical Review D
- Vol. 110 (7)
Open AccessImproved limits on transformation from the Spallation Neutron SourceConversions between neutrons n and dark matter candidate sterile neutrons n ′ have been proposed as a mechanism for baryon number B violation. In the case that there is a small mass difference Δ m between the n and the n ′ states, oscillations can be induced by compensating for Δ m with a magnetic field. A search for such neutron oscillations was performed at the Spallation Neutron Source by looking for anomalous neutron transmission through a strongly absorbing cadmium wafer inside of a 6.6 T magnet. The approach described here saw no regenerated neutrons above background, which provides an improved limit for neutron–sterile neutron transformations for a range of Δ m between 0.1 and 1000 neV. Published by the American Physical Society 2024
- 27 May 2022
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 128 (21) , 212503
Experimental Search for Neutron to Mirror Neutron Oscillations as an Explanation of the Neutron Lifetime Anomaly
An unexplained discrepancy persists between “beam” and “bottle” measurements of the neutron lifetime. A new model proposed that conversions of neutrons into mirror neutrons , part of a dark mirror sector, can increase the apparent neutron lifetime by 1% via a small mass splitting between and inside the 4.6 T magnetic field of the National Institute of Standards and Technology Beam Lifetime experiment. A search for neutron conversions in a 6.6 T magnetic field was performed at the Spallation Neutron Source which excludes this explanation for the neutron lifetime discrepancy.- 27 May 2022
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 128 (21) , 212503
Experimental Search for Neutron to Mirror Neutron Oscillations as an Explanation of the Neutron Lifetime Anomaly
An unexplained discrepancy persists between “beam” and “bottle” measurements of the neutron lifetime. A new model proposed that conversions of neutrons into mirror neutrons , part of a dark mirror sector, can increase the apparent neutron lifetime by 1% via a small mass splitting between and inside the 4.6 T magnetic field of the National Institute of Standards and Technology Beam Lifetime experiment. A search for neutron conversions in a 6.6 T magnetic field was performed at the Spallation Neutron Source which excludes this explanation for the neutron lifetime discrepancy.- Open Access
Neutron-Mirror Neutron Oscillations in Absorbing Matter
The possibility that a neutron can be transformed to a hidden sector particle remains intriguingly open. Proposed theoretical models conjecture that the hidden sector can be represented by a mirror sector, and the neutron n can oscillate into its sterile mirror twin , exactly or nearly degenerate in mass with n. Oscillations can take place in vacuum or in an environment containing regular matter and a magnetic field, in which only the neutron will be subject to interactions with the environment. We describe the propagation of the oscillating system in a cold neutron beam passing through dense absorbing materials in connection to the possible regeneration type of experiments, where the effect of transformation can be observed.Open AccessNeutron-Mirror Neutron Oscillations in Absorbing Matter
The possibility that a neutron can be transformed to a hidden sector particle remains intriguingly open. Proposed theoretical models conjecture that the hidden sector can be represented by a mirror sector, and the neutron n can oscillate into its sterile mirror twin , exactly or nearly degenerate in mass with n. Oscillations can take place in vacuum or in an environment containing regular matter and a magnetic field, in which only the neutron will be subject to interactions with the environment. We describe the propagation of the oscillating system in a cold neutron beam passing through dense absorbing materials in connection to the possible regeneration type of experiments, where the effect of transformation can be observed. - Open Access
Neutron-Mirror Neutron oscillations in Matter
The possibility that a neutron can be transformed to a hidden sector particle remains intriguingly open. Proposed theoretical models conjecture that the hidden sector can be represented by a mirror sector, and the neutron n can oscillate into its sterile mirror twin n', exactly or nearly degenerate in mass with n. Oscillations n - n' can take place in vacuum and in the environment of the regular matter and the magnetic field where only neutron will be subject of interaction with the environment. We describe the propagation of the oscillating n - n' system as a particle of the cold neutron beam passing through the dense absorbing materials in connection with the possible regeneration type of experiments where the effect of n -> n' -> n transformation can be observed.
Open AccessNeutron-Mirror Neutron oscillations in Matter
The possibility that a neutron can be transformed to a hidden sector particle remains intriguingly open. Proposed theoretical models conjecture that the hidden sector can be represented by a mirror sector, and the neutron n can oscillate into its sterile mirror twin n', exactly or nearly degenerate in mass with n. Oscillations n - n' can take place in vacuum and in the environment of the regular matter and the magnetic field where only neutron will be subject of interaction with the environment. We describe the propagation of the oscillating n - n' system as a particle of the cold neutron beam passing through the dense absorbing materials in connection with the possible regeneration type of experiments where the effect of n -> n' -> n transformation can be observed.
- Open Access
$|Δ\mathcal{B}| =2$: A State of the Field, and Looking Forward--A brief status report of theoretical and experimental physics opportunities
The origin of the matter-antimatter asymmetry apparently obligates the laws of physics to include some mechanism of baryon number ($\mathcal{B}$) violation. Searches for interactions violating $\mathcal{B}$ and baryon-minus-lepton number $\mathcal{(B-L)}$ represent a rich and underutilized opportunity. These are complementary to the existing, broad program of searches for $\mathcal{L}$-violating modes such as neutrinoless double $\beta$-decay which could provide deeper understandings of the plausibility of leptogenesis, or $\mathcal{B}$-violating, $\mathcal{(B-L)}$-conserving processes such as proton decay. In particular, a low-scale, post-sphaleron violation mechanism of $\mathcal{(B-L)}$ could provide a \textit{testable} form of baryogenesis. Though theoretically compelling, searches for such $\mathcal{(B-L)}$-violating processes like $\Delta\mathcal{B}=2$ dinucleon decay and $n\rightarrow\bar{n}$ remain relatively underexplored experimentally compared to other rare processes. By taking advantage of upcoming facilities such as the Deep Underground Neutrino Experiment and the European Spallation Source, this gap can be addressed with new intranuclear and free searches for neutron transformations with very high sensitivity, perhaps greater than three orders of magnitude higher than previous experimental searches. This proceedings reports on recent theoretical and experimental advances and sensitivities of next-generation searches for neutron transformations were detailed as part of the Amherst Center for Fundamental Interactions Workshop, "Theoretical Innovations for Future Experiments Regarding Baryon Number Violation," directly coordinated with the Rare Processes and Precision Measurements Frontier.Open Access$|Δ\mathcal{B}| =2$: A State of the Field, and Looking Forward--A brief status report of theoretical and experimental physics opportunities
The origin of the matter-antimatter asymmetry apparently obligates the laws of physics to include some mechanism of baryon number ($\mathcal{B}$) violation. Searches for interactions violating $\mathcal{B}$ and baryon-minus-lepton number $\mathcal{(B-L)}$ represent a rich and underutilized opportunity. These are complementary to the existing, broad program of searches for $\mathcal{L}$-violating modes such as neutrinoless double $\beta$-decay which could provide deeper understandings of the plausibility of leptogenesis, or $\mathcal{B}$-violating, $\mathcal{(B-L)}$-conserving processes such as proton decay. In particular, a low-scale, post-sphaleron violation mechanism of $\mathcal{(B-L)}$ could provide a \textit{testable} form of baryogenesis. Though theoretically compelling, searches for such $\mathcal{(B-L)}$-violating processes like $\Delta\mathcal{B}=2$ dinucleon decay and $n\rightarrow\bar{n}$ remain relatively underexplored experimentally compared to other rare processes. By taking advantage of upcoming facilities such as the Deep Underground Neutrino Experiment and the European Spallation Source, this gap can be addressed with new intranuclear and free searches for neutron transformations with very high sensitivity, perhaps greater than three orders of magnitude higher than previous experimental searches. This proceedings reports on recent theoretical and experimental advances and sensitivities of next-generation searches for neutron transformations were detailed as part of the Amherst Center for Fundamental Interactions Workshop, "Theoretical Innovations for Future Experiments Regarding Baryon Number Violation," directly coordinated with the Rare Processes and Precision Measurements Frontier. - Open Access
On the Neutron Transition Magnetic Moment
We discuss the possibility of the transition magnetic moments (TMM) between the neutron n and its hypothetical sterile twin “mirror neutron” from a parallel particle “mirror” sector. The neutron can be spontaneously converted into mirror neutron via the TMM (in addition to the more conventional transformation channel due to mass mixing) interacting with the magnetic field as well as with mirror magnetic field . We derive analytic formulae for the average probability of conversion and consider possible experimental manifestations of neutron TMM effects. In particular, we discuss the potential role of these effects in the neutron lifetime measurement experiments leading to new, testable predictions.Open AccessOn the Neutron Transition Magnetic Moment
We discuss the possibility of the transition magnetic moments (TMM) between the neutron n and its hypothetical sterile twin “mirror neutron” from a parallel particle “mirror” sector. The neutron can be spontaneously converted into mirror neutron via the TMM (in addition to the more conventional transformation channel due to mass mixing) interacting with the magnetic field as well as with mirror magnetic field . We derive analytic formulae for the average probability of conversion and consider possible experimental manifestations of neutron TMM effects. In particular, we discuss the potential role of these effects in the neutron lifetime measurement experiments leading to new, testable predictions. - 24 October 2016
- Published by Office of Scientific and Technical Information (OSTI)
Neutrino Interactions
The U.S. Department of Energy's Office of Scientific and Technical Information
- 24 October 2016
- Published by Office of Scientific and Technical Information (OSTI)
Neutrino Interactions
The U.S. Department of Energy's Office of Scientific and Technical Information
- Open Access
Damping and Decoherence in Neutron Oscillations
An analysis is made of the role played by the gas environment in neutron-mirror-neutron and neutron-antineutron oscillations. In the first process the interaction with the ambient medium induces a refraction energy shift which plays the role of an extra magnetic field. In the second process antineutron annihilation in practice might lead to strong decoherence, which should be taken into account in experiments with free neutrons looking for the neutron to antineutron transformation.
Open AccessDamping and Decoherence in Neutron Oscillations
An analysis is made of the role played by the gas environment in neutron-mirror-neutron and neutron-antineutron oscillations. In the first process the interaction with the ambient medium induces a refraction energy shift which plays the role of an extra magnetic field. In the second process antineutron annihilation in practice might lead to strong decoherence, which should be taken into account in experiments with free neutrons looking for the neutron to antineutron transformation.
- 1 October 2012
- Published by Office of Scientific and Technical Information (OSTI)
Cost-effective Design Options for IsoDAR
- 1 October 2012
- Published by Office of Scientific and Technical Information (OSTI)
Cost-effective Design Options for IsoDAR