Progress and simulations for intranuclear neutron-antineutron transformations in
Abstract
With the imminent construction of the Deep Underground Neutrino Experiment (DUNE) and Hyper-Kamiokande, nucleon decay searches as a means to constrain beyond standard model extensions are once again at the forefront of fundamental physics. Abundant neutrons within these large experimental volumes, along with future high-intensity neutron beams such as the European Spallation Source, offer a powerful, high-precision portal onto this physics through searches for B and B-L violating processes such as neutron-antineutron transformations ($$n→\bar{n}$$), a key prediction of compelling theories of baryogenesis. With this in mind, this paper discusses a novel and self-consistent intranuclear simulation of this process within , which plays the role of both detector and target within the DUNE’s gigantic liquid argon time projection chambers. An accurate and independent simulation of the resulting intranuclear annihilation respecting important physical correlations and cascade dynamics for this large nucleus is necessary to understand the viability of such rare searches when contrasted against background sources such as atmospheric neutrinos. Recent theoretical improvements to our model, such as the first calculations of the intranuclear radial annihilation probability distribution and the inclusion of a realistic $$\bar{n}$$A potential, are discussed. A Monte Carlo simulation comparison to another publicly available $$n→\bar{n}$$ generator within GENIE is shown in some detail. The first calculation of ’s $$n→\bar{n}$$-intranuclear suppression factor, an important quantity for future searches at the DUNE, is also completed, finding $$T_R^{Ar}~5.6×10^{22} s^{-1}$$.
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1600060
- Alternate Identifier(s):
- OSTI ID: 1546017
- Report Number(s):
- FERMILAB-PUB-19-298
Journal ID: ISSN 2470-0010; PRVDAQ; 036008
- Grant/Contract Number:
- AC02-07CH11359; SC0014664
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 101 Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Baryogenesis & leptogenesis; Models & methods for nuclear reactions; Neutrons; 39 ≤ A ≤ 58; Monte Carlo methods; Shell model
Citation Formats
Barrow, Joshua L., Golubeva, Elena S., Paryev, Eduard, and Richard, Jean-Marc. Progress and simulations for intranuclear neutron-antineutron transformations in Ar 18 40. United States: N. p., 2020.
Web. doi:10.1103/PhysRevD.101.036008.
Barrow, Joshua L., Golubeva, Elena S., Paryev, Eduard, & Richard, Jean-Marc. Progress and simulations for intranuclear neutron-antineutron transformations in Ar 18 40. United States. doi:https://doi.org/10.1103/PhysRevD.101.036008
Barrow, Joshua L., Golubeva, Elena S., Paryev, Eduard, and Richard, Jean-Marc. Tue .
"Progress and simulations for intranuclear neutron-antineutron transformations in Ar 18 40". United States. doi:https://doi.org/10.1103/PhysRevD.101.036008.
@article{osti_1600060,
title = {Progress and simulations for intranuclear neutron-antineutron transformations in Ar 18 40},
author = {Barrow, Joshua L. and Golubeva, Elena S. and Paryev, Eduard and Richard, Jean-Marc},
abstractNote = {With the imminent construction of the Deep Underground Neutrino Experiment (DUNE) and Hyper-Kamiokande, nucleon decay searches as a means to constrain beyond standard model extensions are once again at the forefront of fundamental physics. Abundant neutrons within these large experimental volumes, along with future high-intensity neutron beams such as the European Spallation Source, offer a powerful, high-precision portal onto this physics through searches for B and B-L violating processes such as neutron-antineutron transformations ($n→\bar{n}$), a key prediction of compelling theories of baryogenesis. With this in mind, this paper discusses a novel and self-consistent intranuclear simulation of this process within Ar1840, which plays the role of both detector and target within the DUNE’s gigantic liquid argon time projection chambers. An accurate and independent simulation of the resulting intranuclear annihilation respecting important physical correlations and cascade dynamics for this large nucleus is necessary to understand the viability of such rare searches when contrasted against background sources such as atmospheric neutrinos. Recent theoretical improvements to our model, such as the first calculations of the Ar1840 intranuclear radial annihilation probability distribution and the inclusion of a realistic $\bar{n}$A potential, are discussed. A Monte Carlo simulation comparison to another publicly available $n→\bar{n}$ generator within GENIE is shown in some detail. The first calculation of Ar1840’s $n→\bar{n}$-intranuclear suppression factor, an important quantity for future searches at the DUNE, is also completed, finding $T_R^{Ar}~5.6×10^{22} s^{-1}$.},
doi = {10.1103/PhysRevD.101.036008},
journal = {Physical Review D},
number = 3,
volume = 101,
place = {United States},
year = {2020},
month = {2}
}
DOI: https://doi.org/10.1103/PhysRevD.101.036008
Web of Science
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