Jordy de Vries
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View article: Can Pions and Weak Magnetism in 2νββ Tell Us Something About BSM Physics?
Can Pions and Weak Magnetism in 2νββ Tell Us Something About BSM Physics? Open
With experiments improving their 2𝜈𝛽𝛽 measurements, there is growing demand for precision in its theoretical calculation. A correction that has been applied to single 𝛽-decay and 0𝜈𝛽𝛽, but not yet to 2𝜈𝛽𝛽, is the chiral correction. This co…
View article: 2D transverse laser cooling of a hexapole focused beam of cold BaF molecules
2D transverse laser cooling of a hexapole focused beam of cold BaF molecules Open
A cryogenic buffer gas beam, an electrostatic hexapole lens, and 2D transverse Doppler laser cooling are combined to produce a bright beam of barium monofluoride ($^{138}$Ba$^{19}$F) molecules. Experimental results and trajectory simulatio…
View article: 2νββ spectrum in chiral effective field theory
2νββ spectrum in chiral effective field theory Open
A bstract We investigate two-neutrino double beta decay (2 νββ ) in chiral effective field theory. We find contributions from weak magnetism and double-weak pion-exchange at next-to-leading-order in the chiral power counting. We discuss th…
View article: Confronting the low-scale seesaw and leptogenesis with neutrinoless double beta decay
Confronting the low-scale seesaw and leptogenesis with neutrinoless double beta decay Open
A bstract We revisit the impact of heavy neutrinos with masses in the MeV-GeV range on neutrinoless double beta decay (0 νββ ) in view of updated results for the lifetime of this process. Working in a minimal realistic extension of the Sta…
View article: Probing light sterile neutrinos in left-right symmetric models with displaced vertices and neutrinoless double beta decay
Probing light sterile neutrinos in left-right symmetric models with displaced vertices and neutrinoless double beta decay Open
A bstract An investigation of relatively light (GeV-scale), long-lived right-handed neutrinos is performed within minimal left-right symmetric models using the neutrino-extended Standard Model Effective Field Theory framework. Light steril…
View article: Probing the QCD $\bar θ$ term with paramagnetic molecules
Probing the QCD $\bar θ$ term with paramagnetic molecules Open
The experimental search for CP violation in paramagnetic atomic and molecular systems has made impressive progress in recent years. This has led to strong upper limits on the electron electric dipole moment. The same measurements can also …
View article: $2νββ$ Spectrum in Chiral Effective Field Theory
$2νββ$ Spectrum in Chiral Effective Field Theory Open
We investigate two-neutrino double beta decay ($2νββ$) in chiral effective field theory. We find contributions from weak magnetism and double-weak pion-exchange at next-to-leading-order in the chiral power counting. We discuss the impact o…
View article: Sterile neutrinos and neutrinoless double beta decay in effective field theory
Sterile neutrinos and neutrinoless double beta decay in effective field theory Open
We investigate neutrinoless double beta decay (0νββ) in the presence of sterile neutrinos with Majorana mass terms. These gauge-singlet fields are allowed to interact with Standard-Model (SM) fields via renormalizable Yukawa couplings as w…
View article: Radiative Corrections to Superallowed <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>β</mml:mi></mml:math> Decays in Effective Field Theory
Radiative Corrections to Superallowed Decays in Effective Field Theory Open
The accuracy of Vud determinations from superallowed β decays critically hinges on control over radiative corrections. Recently, substantial progress has been made on the single-nucleon, universal corrections, while nucleus-dependent effec…
View article: Dark matter scattering off $$ ^{4}$$He in chiral effective field theory
Dark matter scattering off $$ ^{4}$$He in chiral effective field theory Open
We study dark matter scattering off $$ ^4$$ He and other light nuclei using chiral effective field theory. We consider scalar DM interactions and include both one- and two-nucleon scattering processes. The DM interactions and nuclear wa…
View article: Confronting the low-scale seesaw and leptogenesis with neutrinoless double beta decay
Confronting the low-scale seesaw and leptogenesis with neutrinoless double beta decay Open
We revisit the impact of heavy neutrinos with masses in the MeV-GeV range on neutrinoless double beta decay ($0νββ$) in view of updated results for the lifetime of this process. Working in a minimal realistic extension of the Standard Mode…
View article: Probing light sterile neutrinos in left-right symmetric models with displaced vertices and neutrinoless double beta decay
Probing light sterile neutrinos in left-right symmetric models with displaced vertices and neutrinoless double beta decay Open
An investigation of relatively light (GeV-scale), long-lived right-handed neutrinos is performed within minimal left-right symmetric models using the neutrino-extended Standard Model Effective Field Theory framework. Light sterile neutrino…
View article: Ab-initio electroweak corrections to superallowed $β$ decays and their impact on $V_{ud}$
Ab-initio electroweak corrections to superallowed $β$ decays and their impact on $V_{ud}$ Open
Radiative corrections are essential for an accurate determination of $V_{ud}$ from superallowed $β$ decays. In view of recent progress in the single-nucleon sector, the uncertainty is dominated by the theoretical description of nucleus-dep…
View article: Radiative corrections to superallowed $β$ decays in effective field theory
Radiative corrections to superallowed $β$ decays in effective field theory Open
The accuracy of $V_{ud}$ determinations from superallowed $β$ decays critically hinges on control over radiative corrections. Recently, substantial progress has been made on the single-nucleon, universal corrections, while nucleus-dependen…
View article: Anomalies in global SMEFT analyses. A case study of first-row CKM unitarity
Anomalies in global SMEFT analyses. A case study of first-row CKM unitarity Open
A bstract Recent developments in the Standard Model analysis of semileptonic charged-current processes involving light quarks have revealed ~ 3 σ tensions in Cabibbo universality tests involving meson, neutron, and nuclear beta decays. In …
View article: Neutrinoless double beta decay rates in the presence of light sterile neutrinos
Neutrinoless double beta decay rates in the presence of light sterile neutrinos Open
We investigate neutrinoless double-beta decay ($0νββ$) in minimal extensions of the Standard Model of particle physics where gauge-singlet right-handed neutrinos give rise to Dirac and Majorana neutrino mass terms. We argue that the standa…
View article: Various Phenomenological Aspects of the R-parity Violating MSSM
Various Phenomenological Aspects of the R-parity Violating MSSM Open
The Standard Model (SM) faces both theoretical and experimental challenges that indicate the existence of physics beyond its current framework. Among the proposed extensions, supersymmetry (SUSY) emerges as a promising concept. The simples…
View article: Long-lived neutral fermions at the DUNE near detector
Long-lived neutral fermions at the DUNE near detector Open
A bstract At the Deep Underground Neutrino Experiment (DUNE), a proton beam hits a fixed target leading to large production rates of mesons. These mesons can decay and potentially provide a source of long-lived neutral fermions. Examples o…
View article: CP-violating axion interactions II: axions as dark matter
CP-violating axion interactions II: axions as dark matter Open
A bstract Axions provide a solution to the strong CP problem and are excellent dark matter candidates. The presence of additional sources of CP violation, for example to account for the matter/antimatter asymmetry of the universe, can lead…
View article: Anomalies in global SMEFT analyses: a case study of first-row CKM unitarity
Anomalies in global SMEFT analyses: a case study of first-row CKM unitarity Open
Recent developments in the Standard Model analysis of semileptonic charged-current processes involving light quarks have revealed $\sim 3σ$ tensions in Cabibbo universality tests involving meson, neutron, and nuclear beta decays. In this p…
View article: Long-lived neutral fermions at the DUNE near detector
Long-lived neutral fermions at the DUNE near detector Open
At the Deep Underground Neutrino Experiment (DUNE), a proton beam hits a fixed target leading to large production rates of mesons. These mesons can decay and potentially provide a source of long-lived neutral fermions. Examples of such lon…
View article: Dark matter scattering off ${}^4$He in chiral effective field theory
Dark matter scattering off ${}^4$He in chiral effective field theory Open
We study dark matter scattering off ${}^4$He and other light nuclei using chiral effective field theory. We consider scalar DM interactions and include both one- and two-nucleon scattering processes. The DM interactions and nuclear wave fu…
View article: Neutrinoless double-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math> decay in the neutrino-extended standard model
Neutrinoless double- decay in the neutrino-extended standard model Open
We investigate neutrinoless double-beta decay (0νββ) in the minimal extension of the standard model of particle physics, the νSM, where gauge-singlet right-handed neutrinos give rise to Dirac and Majorana neutrino mass terms. We focus on t…
View article: νDoBe — A Python tool for neutrinoless double beta decay
νDoBe — A Python tool for neutrinoless double beta decay Open
A bstract We present ν DoBe, a Python tool for the computation of neutrinoless double beta decay (0 νββ ) rates in terms of lepton-number-violating operators in the Standard Model Effective Field Theory (SMEFT). The tool can be used for au…
View article: CP-violating axion interactions II: axions as Dark Matter
CP-violating axion interactions II: axions as Dark Matter Open
Axions provide a solution to the strong CP problem and are excellent dark matter candidates. The presence of additional sources of CP violation, for example to account for the matter/antimatter asymmetry of the universe, can lead to CP-vio…
View article: $ν$DoBe -- A Python Tool for Neutrinoless Double Beta Decay
$ν$DoBe -- A Python Tool for Neutrinoless Double Beta Decay Open
We present $ν$DoBe, a Python tool for the computation of neutrinoless double beta decay ($0νββ$) rates in terms of lepton-number-violating operators in the Standard Model Effective Field Theory (SMEFT). The tool can be used for automated c…
View article: Neutrinoless double-beta decay in the neutrino-extended Standard Model
Neutrinoless double-beta decay in the neutrino-extended Standard Model Open
We investigate neutrinoless double-beta decay ($0νββ$) in the minimal extension of the standard model of particle physics, the $ν$SM, where gauge-singlet right-handed neutrinos give rise to Dirac and Majorana neutrino mass terms. We focus …
View article: The Forward Physics Facility at the High-Luminosity LHC
The Forward Physics Facility at the High-Luminosity LHC Open
High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along the beam collision axis, outside of the acceptance of existing LHC experiments. The proposed Forward Physics Facility (FPF)…