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Title: Progress and Simulations for Intranuclear Neutron-Antineutron Transformations in $${}^{40}_{18} Ar$$

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 (BSM) 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 $$\mathcal{B}$$ and $$\mathcal{B}-\mathcal{L}$$ violating processes such as neutron--antineutron transformations ($$n\rightarrow\bar{n}$$), 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 $${}^{40}_{18} Ar$$, which plays the role of both detector and target within 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, including the first calculation of $${}^{40}_{18} Ar$$'s $$\bar{n}$$-intranuclear suppression factor, and Monte Carlo simulation comparisons to another publicly available $$n\rightarrow\bar{n}$$ generator within GENIE, are also discussed.

Authors:
ORCiD logo [1];  [2];  [2];  [3]
  1. Tennessee U.
  2. Moscow, INR
  3. Lyon, IPN
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1546017
Report Number(s):
arXiv:1906.02833; FERMILAB-PUB-19-298
1738832
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Barrow, Joshua L., Golubeva, Elena S., Paryev, Eduard, and Richard, Jean-Marc. Progress and Simulations for Intranuclear Neutron-Antineutron Transformations in ${}^{40}_{18} Ar$. United States: N. p., 2019. Web.
Barrow, Joshua L., Golubeva, Elena S., Paryev, Eduard, & Richard, Jean-Marc. Progress and Simulations for Intranuclear Neutron-Antineutron Transformations in ${}^{40}_{18} Ar$. United States.
Barrow, Joshua L., Golubeva, Elena S., Paryev, Eduard, and Richard, Jean-Marc. Thu . "Progress and Simulations for Intranuclear Neutron-Antineutron Transformations in ${}^{40}_{18} Ar$". United States. https://www.osti.gov/servlets/purl/1546017.
@article{osti_1546017,
title = {Progress and Simulations for Intranuclear Neutron-Antineutron Transformations in ${}^{40}_{18} Ar$},
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 (BSM) 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 $\mathcal{B}$ and $\mathcal{B}-\mathcal{L}$ violating processes such as neutron--antineutron transformations ($n\rightarrow\bar{n}$), 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 ${}^{40}_{18} Ar$, which plays the role of both detector and target within 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, including the first calculation of ${}^{40}_{18} Ar$'s $\bar{n}$-intranuclear suppression factor, and Monte Carlo simulation comparisons to another publicly available $n\rightarrow\bar{n}$ generator within GENIE, are also discussed.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {6}
}