59 citations · 306 across the 26 of their papers we have counts for
27 papers
Higher-order corrections to beta decays and nuclear structure
Grigor Sargsyan, Ayala Glick-Magid
Precision measurements of nuclear decay offer a powerful route to tests of physics beyond the Standard Model, but interpreting measurements spectra and correlation observables…
Future directions in nuclear decay at FRIB and beyond
Garrett B. King, Ayala Glick-Magid, Grigor Sargsyan +38
Motivated by the opportunities presented for studies relevant to nuclear structure, astrophysics, and fundamental symmetries with nuclear decay, the Facility for Rare Isotope B…
Ab initio optical potentials for magnesium isotopes at intermediate energies: from stability to the island of inversion
G. H. Sargsyan, J. I. Fuentealba Bustamente, K. Beyer +1
We present the first calculations of ab initio nonlocal optical potentials for Mg and Mg isotopes using the leading-order term of the spectator expansion of mul…
The Role of Ab Initio Beta-Decay Calculations in Light Nuclei for Probes of Physics Beyond the Standard Model
Grigor H. Sargsyan, Garrett B. King, Ayala Glick-Magid +1
Precision beta decay experiments serve as powerful probes of physics beyond the Standard Model, enabling stringent tests of fundamental symmetries of nature. In particular, these e…
Triplet of kindred prompt-2p emitters in mass-8 proton-rich nuclei
R. J. Charity, G. H. Sargsyan, K. D. Launey +3
A triplet of kindred prompt-2p emitters in A=8 nuclei has been demonstrated. Two of these are the ground state of 8C and its isobaric analog state in 8B, both of which are analogs…
Comparing invariant-mass spectroscopy of 8B with ab initio predictions
R. J. Charity, G. H. Sargsyan, K. D. Launey +3
Levels in 8B have been investigated experimentally using the invariant-mass technique and compared to ab initio calculations. Data sets obtained using E/A=69-MeV 9C and 13O beams o…
Ab initio symmetry-adapted approaches to nuclear reactions
Kristina D Launey, Grigor H. Sargsyan, Alexis Mercenne +2
In this review, we discuss recent applications of the ab initio symmetry-adapted no-core shell-model (SA-NCSM) theory for study and prediction of structure and reactions of stable…
Unexpected Rise in Nuclear Collectivity from Short-Range Physics
Kevin S. Becker, Kristina D. Launey, Andreas Ekström +4
We discover a surprising relation between the collective motion of nucleons within atomic nuclei, traditionally understood to be driven by long-range correlations, and short-range…
Ab initio informed 20Ne(p, p)16O reaction elucidates the emergence of alpha clustering from chiral potentials
G. H. Sargsyan, Kazuki Yoshida, Kazuyuki Ogata +4
We report on the first \textit{ab initio} informed knock-out reaction in the intermediate-mass region, with the aim to probe the underlying chiral potential and its impact on t…
Microscopic optical potentials from a Greens function approach
G. H. Sargsyan, G. Potel, K. Kravvaris +1
Optical potentials are a standard tool in the study of nuclear reactions, as they describe the interaction between a target nucleus and a projectile. The use of phenomenological op…
Uncertainty Quantification of Collective Nuclear Observables From the Chiral Potential Parametrization
Kevin S. Becker, Kristina D. Launey, Andreas Ekström +4
We perform an uncertainty estimate of quadrupole moments and B(E2) transition rates that inform nuclear collectivity. In particular, we study the low-lying states of 6Li and 12C us…
Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an Ab Initio Perspective
Kevin S. Becker, Kristina D. Launey, Andreas Ekström +5
The ab initio symmetry-adapted no-core shell model naturally describes nuclear deformation and collectivity, and is therefore well-suited to studying the dynamics and coexistence o…
Ab initio translationally invariant nucleon-nucleus optical potentials
M. Burrows, K. D. Launey, A. Mercenne +4
We combine the \textit{ab initio} symmetry-adapted no-core shell model (SA-NCSM) with the single-particle Green's function approach to construct optical potentials rooted in first…
Fundamental Symmetries, Neutrons, and Neutrinos (FSNN): Whitepaper for the 2023 NSAC Long Range Plan
B. Acharya, C. Adams, A. A. Aleksandrova +176
This whitepaper presents the research priorities decided on by attendees of the 2022 Town Meeting for Fundamental Symmetries, Neutrons and Neutrinos, which took place December 13-1…
Nuclear decay as a probe for physics beyond the Standard Model
M. Brodeur, N. Buzinsky, M. A. Caprio +43
This white paper was submitted to the 2022 Fundamental Symmetries, Neutrons, and Neutrinos (FSNN) Town Hall Meeting in preparation for the next NSAC Long Range Plan. We advocate to…
Ab initio single-neutron spectroscopic overlaps in lithium isotopes
G. H. Sargsyan, K. D. Launey, R. M. Shaffer +5
We calculate single-neutron spectroscopic overlaps for lithium isotopes in the framework of the \textit{ab initio} symmetry-adapted no-core shell model. We report the associated ne…
Optical potentials for the rare-isotope beam era
C. Hebborn, F. M. Nunes, G. Potel +26
We review recent progress and motivate the need for further developments in nuclear optical potentials that are widely used in the theoretical analysis of nucleon elastic scatterin…
New Insights into Backbending in the Symmetry-adapted Framework
Nicholas D. Heller, Grigor H. Sargsyan, Kristina D. Launey +3
We provide new insights into backbending phenomenon within the symmetry-adapted framework which naturally describes the intrinsic deformation of atomic nuclei. For …
Improved Limit on Tensor Currents in the Weak Interaction from Li Decay
M. T. Burkey, G. Savard, A. T. Gallant +28
The electroweak interaction in the Standard Model (SM) is described by a pure vector-axial-vector structure, though any Lorentz-invariant component could contribute. In this work,…
Nuclear Forces for Precision Nuclear Physics -- a collection of perspectives
Ingo Tews, Zohreh Davoudi, Andreas Ekström +42
This is a collection of perspective pieces contributed by the participants of the Institute of Nuclear Theory's Program on Nuclear Physics for Precision Nuclear Physics which was h…
Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei
Alexis Mercenne, Kristina D. Launey, Tomas Dytrych +4
We study the efficacy of a new ab initio framework that combines the symmetry-adapted (SA) no-core shell-model approach with the resonating group method (RGM) for unified descripti…
Emergent symplectic symmetry in atomic nuclei: Ab initio symmetry-adapted no-core shell model
Kristina D Launey, Tomáš Dytrych, Grigor H Sargsyan +2
Exact symmetry and symmetry-breaking phenomena play a key role in gaining a better understanding of the physics of many-particle systems, from quarks and atomic nuclei, through mol…
Machine learning approach to pattern recognition in nuclear dynamics from the ab initio symmetry-adapted no-core shell model
O. M. Molchanov, K. D. Launey, A. Mercenne +3
A novel machine learning approach is used to provide further insight into atomic nuclei and to detect orderly patterns amidst a vast data of large-scale calculations. The method ut…
Impact of clustering on the Li decay and recoil form factors
G. H. Sargsyan, K. D. Launey, M. T. Burkey +10
We place unprecedented constraints on recoil corrections in the decay of Li, by identifying a strong correlation between them and the Li ground state quadrupole moment…