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A long-standing limitation of semiconductor neutron detectors is the lack of a scalable solution to make large area instruments. Neutron detectors are used in a wide range of applications, including the nuclear industry, safeguarding…

Instrumentation and Detectors · Physics 2022-12-19 Joanna Borowiec , Fani Eirini Taifakou , Muhammad Ali , Chris Allwork , Adrian J. Bevan , Theo Kreouzis , Cozmin Timis

The IceCube Neutrino Observatory is a Cherenkov detector located at the South Pole. Its main component consists of an in-ice array of optical modules instrumenting one cubic kilometer of deep Glacial ice. The DeepCore sub-detector is a…

High Energy Astrophysical Phenomena · Physics 2023-06-29 Shiqi Yu

We present a detailed report of a measurement of the neutron $\beta$-asymmetry parameter $A_0$, the parity-violating angular correlation between the neutron spin and the decay electron momentum, performed with polarized ultracold neutrons…

We report on the strategy used to optimize the sensitivity of our search for a neutron electric dipole moment at the Paul Scherrer Institute. Measurements were made upon ultracold neutrons stored within a single chamber at the heart of our…

A new approach to the free fall experiment with UCN is proposed. The idea is that the experiment is performed with neutrons from different equidistant lines of a discrete energy spectrum with a precisely known distance between the lines.…

Nuclear Experiment · Physics 2016-11-03 M. A. Zakharov , G. V. Kulin , A. I. Frank , D. V. Kustov , S. V. Goryunov

Measuring the scintillation and ionization yields of liquid xenon in response to ultra-low energy nuclear recoil events is necessary to increase the sensitivity of liquid xenon experiments to light dark matter. Neutron capture on xenon can…

Instrumentation and Detectors · Physics 2023-03-01 C. S. Amarasinghe , R. Coronel , D. Q. Huang , Y. Liu , M. Arthurs , S. Steinfeld , R. Gaitskell , W. Lorenzon

A new measurement of the neutron $\beta$-decay asymmetry $A_0$ has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN source at the Los Alamos Neutron Science Center (LANSCE).…

Constraining neutrino mass remains an elusive challenge in modern physics. Precision measurements are expected from several upcoming cosmological probes of large-scale structure. Achieving this goal relies on an equal level of precision…

Cosmology and Nongalactic Astrophysics · Physics 2017-07-31 J. D. Emberson , Hao-Ran Yu , Derek Inman , Tong-Jie Zhang , Ue-Li Pen , Joachim Harnois-Deraps , Shuo Yuan , Huan-Yu Teng , Hong-Ming Zhu , Xuelei Chen , Zhi-Zhong Xing

Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) offers a unique way to study neutrino properties and to search for new physics beyond the Standard Model. Nuclear reactors are promising sources to explore this process at low…

The Nucleon-Nucleon One Meson Exchange Potential, its wave functions and related Meson Exchange Currents are analyzed for point-like nucleons. The leading Nc contributions generate a local and energy independent potential which presents…

Nuclear Theory · Physics 2015-05-19 A. Calle Cordon , E. Ruiz Arriola

The idea of a hidden sector of mirror partners of elementary particles has attracted considerable interest as a possible candidate for dark matter. Recently it was pointed out by Berezhiani and Bento that the present experimental data…

Massive neutrinos make up a fraction of the dark matter, but due to their large thermal velocities, cluster significantly less than cold dark matter (CDM) on small scales. An accurate theoretical modelling of their effect during the…

Cosmology and Nongalactic Astrophysics · Physics 2015-08-21 Yacine Ali-Haïmoud , Simeon Bird

In this paper we report studies of the Fermi potential and loss per bounce of ultracold neutron (UCN) on a deuterated scintillator (Eljen-299-02D). These UCN properties of the scintillator enables a wide variety of applications in…

A cubic kilometer scale experiment has been proposed to detect cosmic neutrinos of energy from tens of GeV up to the highest energies observed for cosmic rays, around 10**20 eV, or possibly even beyond. Detection efficiencies depend…

High Energy Physics - Phenomenology · Physics 2009-10-30 Guenter Sigl

The results of LSND and MiniBooNE, along with the recent papers on a possible reactor neutrino flux anomaly give tantalizing hints of new physics. Models beyond the neutrino-SM have been developed to explain these results and involve one or…

Background: Exotic non-spherical nuclear pasta shapes are expected in nuclear matter at just below saturation density because of competition between short range nuclear attraction and long range Coulomb repulsion. Purpose: We explore the…

Nuclear Theory · Physics 2015-07-01 M. E. Caplan , A. S. Schneider , C. J. Horowitz , D. K. Berry

We present a theoretical investigation of photonuclear tomography as a novel technique for probing the internal structure of nuclei. In this approach, ultraperipheral heavy-ion collisions (UPCs) serve as a source of intense fluxes of…

Nuclear Theory · Physics 2025-08-29 J. D. Baker , C. A. Bertulani , Victor P. Goncalves

Neutrinos play a crucial role in the core-collapse supernova (CCSN) explosion mechanism. The requirement of accurately calculating the transport of neutrinos makes simulations of the CCSN mechanism extremely challenging and computationally…

High Energy Astrophysical Phenomena · Physics 2018-12-05 Kuo-Chuan Pan , Carlos Mattes , Evan P. O'Connor , Sean M. Couch , Albino Perego , Almudena Arcones

For ultracold neutrons with a kinetic energy below 10 neV, strong scattering, characterized by $2\pi l_{c} / \lambda\leq 1$, can be obtained in metamaterials of C and $^7$Li. Here $l_{c}$ and $\lambda$ are the coherent scattering mean free…

Instrumentation and Detectors · Physics 2020-09-18 Zhehui Wang , Marcel Demarteau , C. L. Morris , Yanhua Shih

The lightest supersymmetric particle may decay with branching ratios that correlate with neutrino oscillation parameters. In this case the CERN Large Hadron Collider (LHC) has the potential to probe the atmospheric neutrino mixing angle…

High Energy Physics - Phenomenology · Physics 2014-11-21 F. De Campos , O. J. P. Eboli , M. Hirsch , M. B. Magro , W. Porod , D. Restrepo , J. W. F. Valle