Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source. / Addazi, A.; Anderson, K.; Ansell, S. и др.
в: Journal of Physics G: Nuclear and Particle Physics, Том 48, № 7, 070501, 07.2021.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source
AU - Addazi, A.
AU - Anderson, K.
AU - Ansell, S.
AU - Babu, K. S.
AU - Barrow, J. L.
AU - Baxter, D. V.
AU - Bentley, P. M.
AU - Berezhiani, Z.
AU - Bevilacqua, R.
AU - Biondi, R.
AU - Bohm, C.
AU - Brooijmans, G.
AU - Broussard, L. J.
AU - Cederc ll, J.
AU - Crawford, C.
AU - Dev, P. S.B.
AU - Dijulio, D. D.
AU - Dolgov, A. D.
AU - Dunne, K.
AU - Fierlinger, P.
AU - Fitzsimmons, M. R.
AU - Fomin, A.
AU - Frost, M. J.
AU - Gardiner, S.
AU - Gardner, S.
AU - Galindo-Uribarri, A.
AU - Geltenbort, P.
AU - Girmohanta, S.
AU - Golubev, P.
AU - Golubeva, E.
AU - Greene, G. L.
AU - Greenshaw, T.
AU - Gudkov, V.
AU - Hall-Wilton, R.
AU - Heilbronn, L.
AU - Herrero-Garcia, J.
AU - Holley, A.
AU - Ichikawa, G.
AU - Ito, T. M.
AU - Iverson, E.
AU - Johansson, T.
AU - Jönsson, L.
AU - Jwa, Y. J.
AU - Kamyshkov, Y.
AU - Kanaki, K.
AU - Kearns, E.
AU - Kokai, Z.
AU - Kerbikov, B.
AU - Kudryavtsev, V.
AU - Tkachev, I.
N1 - D Milstead gratefully acknowledges support from the Swedish Research Council. The work of Z Berezhiani is supported in part by CETEMPs at the University di L'Aquila. The work of Y Kamyshkov was supported in part by US DOE Grant DE-SC0014558. The work of S Girmohanta and R Shrock is supported in part by US NSF Grant NSF-PHY-1915093. The work of L Varriano is supported by a US National Science Foundation (NSF) Graduate Research Fellowship under Grant No. DGE-1746045. B Kerbikov is supported by RSF Grant 16-12-10414. Rabrindra Mohapatra gratefully acknowledges support from the NSF via the Grant: PHY-1914631. B Kopeliovich and I Potashnikova acknowledge Grants ANID-Chile FONDECYT 1170319, and ANID PIA/APOYO AFB180002. A Young is supported by the NSF Grant PHY-1914133 and the DOE Grant DE-FG02-ER41042. W M Snow acknowledges support from US National Science Foundation Grant PHY-1914405 and the Indiana University Center for Spacetime Symmetries. J L Barrow's work was supported by the US Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program. The SCGSR program is administered by the Oak Ridge Institute for Science and Education for the DOE under Contract No. DESC0014664. J L Barrow was also partially supported in part by the Visiting Scholars Award Program of the Universities Research Association. The work of P S B Dev is supported in part by the US Department of Energy under Grant No. DE-SC0017987, by the Neutrino Theory Network Program Grant No. DE-AC02-07CHI11359, and by a Fermilab Intensity Frontier Fellowship. L J Broussard is supported by the US DOE under Contract DE-AC05-00OR2272. This work is also funded by the European Union Framework Program for Research and Innovation Horizon 2020 in the HighNESS project, under Grant Agreement 951782.
PY - 2021/7
Y1 - 2021/7
N2 - The violation of baryon number, is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the Universe. However, such a process has yet to be experimentally observed. The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source to search for baryon number violation. The program will include high-sensitivity searches for processes that violate baryon number by one or two units: free neutron-antineutron oscillation via mixing, neutron-antineutron oscillation via regeneration from a sterile neutron state , and neutron disappearance (n → n′); the effective process of neutron regeneration is also possible. The program can be used to discover and characterize mixing in the neutron, antineutron and sterile neutron sectors. The experiment addresses topical open questions such as the origins of baryogenesis and the nature of dark matter, and is sensitive to scales of new physics substantially in excess of those available at colliders. A goal of the program is to open a discovery window to neutron conversion probabilities (sensitivities) by up to three orders of magnitude compared with previous searches. The opportunity to make such a leap in sensitivity tests should not be squandered. The experiment pulls together a diverse international team of physicists from the particle (collider and low energy) and nuclear physics communities, while also including specialists in neutronics and magnetics.
AB - The violation of baryon number, is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the Universe. However, such a process has yet to be experimentally observed. The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source to search for baryon number violation. The program will include high-sensitivity searches for processes that violate baryon number by one or two units: free neutron-antineutron oscillation via mixing, neutron-antineutron oscillation via regeneration from a sterile neutron state , and neutron disappearance (n → n′); the effective process of neutron regeneration is also possible. The program can be used to discover and characterize mixing in the neutron, antineutron and sterile neutron sectors. The experiment addresses topical open questions such as the origins of baryogenesis and the nature of dark matter, and is sensitive to scales of new physics substantially in excess of those available at colliders. A goal of the program is to open a discovery window to neutron conversion probabilities (sensitivities) by up to three orders of magnitude compared with previous searches. The opportunity to make such a leap in sensitivity tests should not be squandered. The experiment pulls together a diverse international team of physicists from the particle (collider and low energy) and nuclear physics communities, while also including specialists in neutronics and magnetics.
UR - http://www.scopus.com/inward/record.url?scp=85108434027&partnerID=8YFLogxK
U2 - 10.1088/1361-6471/abf429
DO - 10.1088/1361-6471/abf429
M3 - Article
AN - SCOPUS:85108434027
VL - 48
JO - Journal of Physics G: Nuclear and Particle Physics
JF - Journal of Physics G: Nuclear and Particle Physics
SN - 0954-3899
IS - 7
M1 - 070501
ER -
ID: 34707998