Susan Gardner
YOU?
Author Swipe
View article: Pulsar Timing Constraints on New Mechanisms of Energy Loss in Neutron Stars
Pulsar Timing Constraints on New Mechanisms of Energy Loss in Neutron Stars Open
View article: Baryon number violation: from nuclear matrix elements to BSM physics
Baryon number violation: from nuclear matrix elements to BSM physics Open
Processes that violate baryon number, most notably proton decay and transitions, are promising probes of physics beyond the Standard Model (BSM) needed to understand the lack of antimatter in the Universe. To interpret current and f…
View article: Snowmass 2021 cross frontier report: Dark matter complementarity
Snowmass 2021 cross frontier report: Dark matter complementarity Open
The fundamental nature of Dark Matter is a central theme of the Snowmass 2021 process, extending across all frontiers. In the last decade, advances in detector technology, analysis techniques and theoretical modeling have enabled a new gen…
View article: Does the Sun have a dark disk?
Does the Sun have a dark disk? Open
The Sun is not quite a perfect sphere, and its oblateness, thought to be induced through its rotation, has been measured using optical observations of its radius. Its gravitational quadrupole moment can then be deduced using solar models, …
View article: Terrestrial Very-Long-Baseline Atom Interferometry: summary of the second workshop
Terrestrial Very-Long-Baseline Atom Interferometry: summary of the second workshop Open
View article: Long-Baseline Atom Interferometry
Long-Baseline Atom Interferometry Open
Long-baseline atom interferometry is a promising technique for probing various aspects of fundamental physics, astrophysics and cosmology, including searches for ultralight dark matter (ULDM) and for gravitational waves (GWs) in the freque…
View article: Revisiting <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>C</mml:mi></mml:mrow></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math> violation in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>η</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mn>0</mml:mn></mml:msup></mml:mrow></mml:math> decay
Revisiting and violation in decay Open
The decay η→π+π−π0 is an ideal process in which to study flavor-conserving C and CP violation beyond the Standard Model. We deduce the C- and CP-odd quark operators that contribute to η→π+π−π0 originating from the mass-dimension-six Standa…
View article: Revisiting $C$ and $CP$ Violation in $η\to π^+π^-π^0$ Decay
Revisiting $C$ and $CP$ Violation in $η\to π^+π^-π^0$ Decay Open
The decay $η\to π^+π^-π^0$ is an ideal process in which to study flavor-conserving $C$ and $CP$ violation beyond the Standard Model. We deduce the $C$- and $CP$-odd quark operators that contribute to $η\to π^+π^-π^0$ originating from the m…
View article: Does the Sun have a Dark Disk?
Does the Sun have a Dark Disk? Open
The Sun is not quite a perfect sphere, and its oblateness, thought to be induced through its rotation, has been measured using optical observations of its radius. Its gravitational quadrupole moment can then be deduced using solar models, …
View article: Terrestrial very-long-baseline atom interferometry: Workshop summary
Terrestrial very-long-baseline atom interferometry: Workshop summary Open
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom i…
View article: Prospects for direct detection of black hole formation in neutron star mergers with next-generation gravitational-wave detectors
Prospects for direct detection of black hole formation in neutron star mergers with next-generation gravitational-wave detectors Open
A direct detection of black hole formation in neutron star mergers would provide invaluable information about matter in neutron star cores and finite temperature effects on the nuclear equation of state. We study black hole formation in ne…
View article: Probing Dark Sectors with Neutron Stars
Probing Dark Sectors with Neutron Stars Open
Tensions in the measurements of neutron and kaon weak decays, such as of the neutron lifetime, may speak to the existence of new particles and dynamics not present in the Standard Model (SM). In scenarios with dark sectors, particles that …
View article: How macroscopic limits on neutron-star baryon loss yield microscopic limits on non-standard-model baryon decay
How macroscopic limits on neutron-star baryon loss yield microscopic limits on non-standard-model baryon decay Open
We investigate how our baryon-loss limits from anomalous binary-pulsar period lengthening can be interpreted microscopically to yield specific constraints on the particle physics of baryon number violation within a neutron star. We focus o…
View article: ΔS = 0 hadronic parity violation in next-to-leading order QCD: Anomalous dimension matrices and their implications
ΔS = 0 hadronic parity violation in next-to-leading order QCD: Anomalous dimension matrices and their implications Open
We construct the effective Hamiltonian for hadronic parity violation in strangeness-nonchanging (ΔS=0) processes in next-to-leading order (NLO) in QCD, for all isosectors, and at a renormalization scale of 2GeV, thus extending our earlier …
View article: Probing Dark Sectors with Neutron Stars
Probing Dark Sectors with Neutron Stars Open
Tensions in the measurements of neutron and kaon weak decays, such as of the neutron lifetime, may speak to the existence of new particles and dynamics not present in the Standard Model (SM). In scenarios with dark sectors, particles that …
View article: $ΔS=0$ Hadronic Parity Violation in Next-to-Leading Order QCD: Anomalous Dimension Matrices and Their Implications
$ΔS=0$ Hadronic Parity Violation in Next-to-Leading Order QCD: Anomalous Dimension Matrices and Their Implications Open
We construct the effective Hamiltonian for hadronic parity violation in strangeness-nonchanging ($ΔS=0$) processes in next-to-leading order (NLO) in QCD, for all isosectors, and at a renormalization scale of 2 GeV, thus extending our earli…
View article: Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary
Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary Open
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom i…
View article: A New Era of Discovery: The 2023 Long-Range Plan for Nuclear Science (V.1.2)
A New Era of Discovery: The 2023 Long-Range Plan for Nuclear Science (V.1.2) Open
Nuclear science is the investigation of how protons and neutrons are formed from elementary particles and how the forces between those particles produce both nuclei and the vast variety of nuclear phenomena that occur in the universe. It h…
View article: Fundamental Neutron Physics: a White Paper on Progress and Prospects in the US
Fundamental Neutron Physics: a White Paper on Progress and Prospects in the US Open
Fundamental neutron physics, combining precision measurements and theory, probes particle physics at short range with reach well beyond the highest energies probed by the LHC. Significant US efforts are underway that will probe BSM CP viol…
View article: Prospects for Direct Detection of Black Hole Formation in Neutron Star Mergers with Next-Generation Gravitational-Wave Detectors
Prospects for Direct Detection of Black Hole Formation in Neutron Star Mergers with Next-Generation Gravitational-Wave Detectors Open
A direct detection of black hole formation in neutron star mergers would provide invaluable information about matter in neutron star cores and finite temperature effects on the nuclear equation of state. We study black hole formation in ne…
View article: Toward a unified treatment of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="normal">Δ</mml:mi><mml:mi>S</mml:mi><mml:mo>=</mml:mo><mml:mn>0</mml:mn></mml:mrow></mml:math> parity violation in low-energy nuclear processes
Toward a unified treatment of parity violation in low-energy nuclear processes Open
We revisit the unified treatment of low-energy hadronic parity violation espoused by Desplanques, Donoghue, and Holstein to the end of an ab initio treatment of parity violation in low-energy nuclear processes within the standard model. He…
View article: Fundamental Symmetries, Neutrons, and Neutrinos (FSNN): Whitepaper for the 2023 NSAC Long Range Plan
Fundamental Symmetries, Neutrons, and Neutrinos (FSNN): Whitepaper for the 2023 NSAC Long Range Plan Open
Through the exploration of fundamental symmetries, and by using nuclei, neutrons, and neutrinos, nuclear physics addresses some of the most profound questions in science. Why does the universe contain so much more matter than antimatter? A…
View article: ECCE sensitivity studies for single hadron transverse single spin asymmetry measurements
ECCE sensitivity studies for single hadron transverse single spin asymmetry measurements Open
View article: Two-point Correlation Function Studies for the Milky Way: Discovery of Spatial Clustering from Disk Excitations and Substructure
Two-point Correlation Function Studies for the Milky Way: Discovery of Spatial Clustering from Disk Excitations and Substructure Open
We introduce a two-particle correlation function (2PCF) for the Milky Way, constructed to probe spatial correlations in the orthogonal directions of the stellar disk in the Galactic cylindrical coordinates of R , ϕ , and z . We use this ne…
View article: Scientific Opportunities at the ARIEL Electron Linac
Scientific Opportunities at the ARIEL Electron Linac Open
This paper gives an overview of the scientific opportunities at the ARIEL electron accelerator identified in open discussion at the workshop, including applications in hadron structure, astrophysical processes, tests of quantum electrodyna…
View article: New Opportunities for the Study of Baryon Number Violation at Low-Energy Accelerators
New Opportunities for the Study of Baryon Number Violation at Low-Energy Accelerators Open
I motivate new searches for baryon-number violation and consider, particularly, the prospects for detecting baryon number violation by two units at low-energy accelerators with intense electron beams, using ARIEL as a particular example.
View article: Snowmass Cosmic Frontier Report
Snowmass Cosmic Frontier Report Open
This report summarizes the current status of Cosmic Frontier physics and the broad and exciting future prospects identified for the Cosmic Frontier as part of the 2021 Snowmass Process.
View article: Snowmass 2021 Dark Matter Complementarity Report
Snowmass 2021 Dark Matter Complementarity Report Open
The fundamental nature of Dark Matter is a central theme of the Snowmass 2021 process, extending across all Frontiers. In the last decade, advances in detector technology, analysis techniques and theoretical modeling have enabled a new gen…
View article: Towards a unified treatment of $ΔS=0$ parity violation in low-energy nuclear processes
Towards a unified treatment of $ΔS=0$ parity violation in low-energy nuclear processes Open
We revisit the unified treatment of low-energy hadronic parity violation espoused by Desplanques, Donoghue, and Holstein to the end of an ab initio treatment of parity violation in low-energy nuclear processes within the Standard Model. We…
View article: QCD analysis of ΔS = 0 hadronic parity violation
QCD analysis of ΔS = 0 hadronic parity violation Open
We present a QCD analysis of the effective weak Hamiltonian at hadronic energy scales for strangenessnonchanging (S = 0) hadronic processes. Performing a leading-order renormalization group analysis in QCD from the W to the $\\mathscr{O}$(…