Dimitrios K. Papoulias
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View article: Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering
Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering Open
A bstract We explore the potential of the European Spallation Source (ESS) in probing physics within and beyond the Standard Model (SM), based on future measurements of coherent elastic neutrino-nucleus scattering (CE ν NS). We consider tw…
View article: Bounds on new neutrino interactions from the first CEνNS data at direct detection experiments
Bounds on new neutrino interactions from the first CEνNS data at direct detection experiments Open
Recently, two dark matter direct detection experiments have announced the first indications of nuclear recoils from solar 8 B neutrinos via coherent elastic neutrino-nucleus scattering (CE ν NS) with xenon nuclei. These results constitute …
View article: Neutrino electromagnetic properties and sterile dipole portal in light of the first solar CE<i>ν</i>NS data
Neutrino electromagnetic properties and sterile dipole portal in light of the first solar CE<i>ν</i>NS data Open
Despite being neutral particles, neutrinos can acquire non-zero electromagnetic properties from radiative corrections that can be induced by the presence of new physics. Electromagnetic neutrino processes induce spectral distortions in neu…
View article: Implications of the first <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>CONUS</mml:mi><mml:mo>+</mml:mo></mml:mrow></mml:math> measurement of coherent elastic neutrino-nucleus scattering
Implications of the first measurement of coherent elastic neutrino-nucleus scattering Open
The CONUS+ collaboration has reported their first observation of coherent elastic neutrino-nucleus scattering (CEνNS). The experiment uses reactor electron antineutrinos and germanium detectors with recoil thresholds as low as 160 eVee. W…
View article: Constraining low scale dark hypercharge symmetry at spallation, reactor, and dark matter direct detection experiments
Constraining low scale dark hypercharge symmetry at spallation, reactor, and dark matter direct detection experiments Open
Coherent elastic neutrino-nucleus (CEνNS) and elastic neutrino-electron scattering (EνES) data are exploited to constrain “chiral” U(1)X gauged models with light vector mediator mass. These models fall under a distinct class of new symmetr…
View article: Inelastic neutrino-nucleus scattering off $^{203/205}$Tl in terms of the nuclear recoil energy using a hybrid nuclear model
Inelastic neutrino-nucleus scattering off $^{203/205}$Tl in terms of the nuclear recoil energy using a hybrid nuclear model Open
Nuclear structure calculations in the context of a novel hybrid nuclear model, combining the nuclear shell model and the microscopic quasiparticle-phonon model are presented. The predictivity of the hybrid model is tested by computing inel…
View article: Implications of the first CONUS+ measurement of coherent elastic neutrino-nucleus scattering
Implications of the first CONUS+ measurement of coherent elastic neutrino-nucleus scattering Open
The CONUS+ collaboration has reported their first observation of coherent elastic neutrino-nucleus scattering (CE$ν$NS). The experiment uses reactor electron antineutrinos and germanium detectors with recoil thresholds as low as $160~\math…
View article: Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering
Probing conventional and new physics at the ESS with coherent elastic neutrino-nucleus scattering Open
We explore the potential of the European Spallation Source (ESS) in probing physics within and beyond the Standard Model (SM), based on future measurements of coherent elastic neutrino-nucleus scattering (CE$ν$NS). We consider two SM physi…
View article: Neutrino electromagnetic properties and sterile dipole portal in light of the first solar CE$ν$NS data
Neutrino electromagnetic properties and sterile dipole portal in light of the first solar CE$ν$NS data Open
Despite being neutral particles, neutrinos can acquire non-zero electromagnetic properties from radiative corrections that can be induced by the presence of new physics. Electromagnetic neutrino processes induce spectral distortions in neu…
View article: Bounds on new neutrino interactions from the first CE$ν$NS data at direct detection experiments
Bounds on new neutrino interactions from the first CE$ν$NS data at direct detection experiments Open
Recently, two dark matter direct detection experiments have announced the first indications of nuclear recoils from solar $^8$B neutrinos via coherent elastic neutrino-nucleus scattering (CE$ν$NS) with xenon nuclei. These results constitut…
View article: Constraining low scale dark hypercharge symmetry at spallation, reactor and Dark Matter direct detection experiments
Constraining low scale dark hypercharge symmetry at spallation, reactor and Dark Matter direct detection experiments Open
Coherent elastic neutrino-nucleus (CE$ν$NS) and elastic neutrino-electron scattering (E$ν$ES) data are exploited to constrain ``chiral'' $U(1)_{X}$ gauged models with light vector mediator mass. These models fall under a distinct class of …
View article: Up-scattering production of a sterile fermion at DUNE: complementarity with spallation source and direct detection experiments
Up-scattering production of a sterile fermion at DUNE: complementarity with spallation source and direct detection experiments Open
A bstract We investigate the possible production of a MeV-scale sterile fermion through the up-scattering of neutrinos on nuclei and atomic electrons at different facilities. We consider a phenomenological model that adds a new fermion to …
View article: Probing new physics with nuclear recoil data from COHERENT
Probing new physics with nuclear recoil data from COHERENT Open
We exploit the full coherent elastic neutrino-nucleus scattering (CEvNS) dataset reported by the COHERENT Collaboration. In particular, we combine the most recent CsI-2021 measurement with the liquid argon (LAr) measurement from the 2020 c…
View article: New Physics Opportunities at the DUNE Near Detector
New Physics Opportunities at the DUNE Near Detector Open
Focusing on elastic neutrino–electron scattering events, we explore the prospect of constraining new physics beyond the Standard Model at the DUNE Near Detector (ND). Specifically, we extract the attainable sensitivities for motivated scen…
View article: Incoherent solar-neutrino scattering off the stable Tl-isotopes
Incoherent solar-neutrino scattering off the stable Tl-isotopes Open
Nuclear-structure calculations for the description of low-energy neutral-current neutrino scattering off the stable $^{203,205}$Tl isotopes are performed in the context of the nuclear shell model using the model space jj56pn. Cross-section…
View article: Up-scattering production of a sterile fermion at DUNE: complementarity with spallation source and direct detection experiments
Up-scattering production of a sterile fermion at DUNE: complementarity with spallation source and direct detection experiments Open
We investigate the possible production of a MeV-scale sterile fermion through the up-scattering of neutrinos on nuclei and atomic electrons at different facilities. We consider a phenomenological model that adds a new fermion to the partic…
View article: XENONnT and LUX-ZEPLIN constraints on DSNB-boosted dark matter
XENONnT and LUX-ZEPLIN constraints on DSNB-boosted dark matter Open
We consider a scenario in which dark matter particles are accelerated to semi-relativistic velocities through their scattering with the Diffuse Supernova Neutrino Background. Such a subdominant, but more energetic dark matter component can…
View article: XENONnT and LUX-ZEPLIN constraints on DSNB-boosted dark matter
XENONnT and LUX-ZEPLIN constraints on DSNB-boosted dark matter Open
We consider a scenario in which dark matter particles are accelerated to semi-relativistic velocities through their scattering with the Diffuse Supernova Neutrino Background. Such a subdominant, but more energetic dark matter component can…
View article: COHERENT production of a dark fermion
COHERENT production of a dark fermion Open
We consider the possible production of a new MeV-scale fermion at the COHERENT experiment. The new fermion, belonging to a dark sector, can be produced through the up-scattering process of neutrinos off the nuclei and the electrons of the …
View article: Probing generalized neutrino interactions with the DUNE Near Detector
Probing generalized neutrino interactions with the DUNE Near Detector Open
A bstract We explore the prospects of constraining general non standard interactions involving light mediators through elastic neutrino-electron scattering events at the DUNE Near Detector (ND). We furthermore consider the special cases of…
View article: The neutrino floor: a data-driven analysis
The neutrino floor: a data-driven analysis Open
We reconsider the discovery limit of multi-ton direct detection dark matter experiments in the light of recent measurements of the coherent elastic neutrino-nucleus scattering process. Assuming the cross section to be a parameter entirely …
View article: COHERENT production of a dark fermion
COHERENT production of a dark fermion Open
We consider the possible production of a new MeV-scale fermion at the COHERENT experiment. The new fermion, belonging to a dark sector, can be produced through the up-scattering process of neutrinos off the nuclei and the electrons of the …
View article: Physics implications of a combined analysis of COHERENT CsI and LAr data
Physics implications of a combined analysis of COHERENT CsI and LAr data Open
A bstract The observation of coherent elastic neutrino nucleus scattering has opened the window to many physics opportunities. This process has been measured by the COHERENT Collaboration using two different targets, first CsI and then arg…
View article: Probing generalized neutrino interactions with the DUNE Near Detector
Probing generalized neutrino interactions with the DUNE Near Detector Open
We explore the prospects of constraining general non standard interactions involving light mediators through elastic neutrino-electron scattering events at the DUNE Near Detector (ND). We furthermore consider the special cases of light vec…
View article: Implications of first LZ and XENONnT results: A comparative study of neutrino properties and light mediators
Implications of first LZ and XENONnT results: A comparative study of neutrino properties and light mediators Open
Next generation direct dark matter detection experiments are favorable facilities to probe neutrino properties and light mediators beyond the Standard Model. We explore the implications of the recent data reported by LUX-ZEPLIN (LZ) and XE…
View article: Physics implications of recent Dresden-II reactor data
Physics implications of recent Dresden-II reactor data Open
Prompted by the recent Dresden-II reactor data, we examine its implications for the determination of the weak mixing angle, paying attention to the effect of the quenching function. We also determine the resulting constraints on the unitar…
View article: Physics implications of a combined analysis of COHERENT CsI and LAr data
Physics implications of a combined analysis of COHERENT CsI and LAr data Open
The observation of coherent elastic neutrino nucleus scattering has opened the window to many physics opportunities. This process has been measured by the COHERENT Collaboration using two different targets, first CsI and then argon. Recent…