New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source
Artikel i vetenskaplig tidskrift, 2021

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.

Författare

A. Addazi

Sichuan University

K. Anderson

Oak Ridge National Laboratory

Stuart Ansell

Max IV-laboratoriet

K.S. Babu

Oklahoma State University

J.L. Barrow

University of Tennessee

D.V. Baxter

Indiana University

P.M. Bentley

European Spallation Source (ESS)

Z. Berezhiani

Laboratori Nazionali del Gran Sasso

R. Bevilacqua

European Spallation Source (ESS)

R. Biondi

Laboratori Nazionali del Gran Sasso

C. Bohm

Stockholms universitet

G. Brooijmans

Stockholms universitet

L.J. Broussard

Oak Ridge National Laboratory

J. Cederc ll

Lunds universitet

C. Crawford

University of Kentucky

P.S.B. Dev

Washington University in St. Louis

D.D. DiJulio

European Spallation Source (ESS)

A.D. Dolgov

Alikhanov Institute for Theoretical and Experimental Physics

K. Dunne

Stockholms universitet

P. Fierlinger

Technische Universität München

M.R. Fitzsimmons

University of Tennessee

A. Fomin

Petersburg Nuclear Physics Institute (PNPI)

M.J. Frost

Oak Ridge National Laboratory

S. Gardiner

Oak Ridge National Laboratory

S. Gardner

University of Kentucky

A. Galindo-Uribarri

Oak Ridge National Laboratory

P. Geltenbort

Institut Laue-Langevin

S. Girmohanta

Stony Brook University

P.I. Golubev

Lunds universitet

E. Golubeva

Russian Academy of Sciences

G.L. Greene

University of Tennessee

T. Greenshaw

University of Liverpool

V. Gudkov

University of South Carolina

R. Hall-Wilton

European Spallation Source (ESS)

Lawrence Heilbronn

University of Tennessee

J. Herrero-Garcia

Scuola Internazionale Superiore di Studi Avanzati

A. Holley

Tennessee Tech University

G. Ichikawa

High Energy Accelerator Research Organization

T.M. Ito

Los Alamos National Laboratory

E. Iverson

Oak Ridge National Laboratory

T. Johansson

Uppsala universitet

L. Jönsson

Uppsala universitet

Y.-J. Jwa

Stockholms universitet

Y. Kamyshkov

University of Tennessee

K. Kanaki

European Spallation Source (ESS)

E. Kearns

Boston University

Z. Kokai

European Spallation Source (ESS)

B. Kerbikov

Alikhanov Institute for Theoretical and Experimental Physics

M. Kitaguchi

Nagoya University

T. Kittelmann

European Spallation Source (ESS)

E. Klinkby

Danmarks Tekniske Universitet (DTU)

A. Kobakhidze

The University of Sydney

L.W. Koerner

University of Houston

B. Kopeliovich

Universidad Técnica Federico Santa María

A. Kozela

Polish Academy of Sciences

V. Kudryavtsev

University of Sheffield

A. Kupsc

Los Alamos National Laboratory

Y.T. Lee

European Spallation Source (ESS)

Mats Lindroos

European Spallation Source (ESS)

J. Makkinje

Columbia University

J.I. Marquez

European Spallation Source (ESS)

B. Meirose

Stockholms universitet

T.M. Miller

European Spallation Source (ESS)

D. Milstead

Stockholms universitet

R.N. Mohapatra

University of Maryland

T. Morishima

Moscow Institute of Physics and Technology

G. Muhrer

European Spallation Source (ESS)

H.P. Mumm

National Institute of Standards and Technology (NIST)

K. Nagamoto

Moscow Institute of Physics and Technology

A. Nepomuceno

Universidade Federal Fluminense

F. Nesti

Universita degli Studi dell'Aquila

V.V. Nesvizhevsky

Institut Laue-Langevin

Thomas Nilsson

Chalmers, Fysik

A. Oskarsson

Lunds universitet

E. Paryev

Russian Academy of Sciences

R.W. Pattie

East Tennessee State University

S. Penttil

Oak Ridge National Laboratory

H. Perrey

Lunds universitet

Y.N. Pokotilovski

Lunds universitet

I. Potashnikovav

University of Houston

K. Ramic

European Spallation Source (ESS)

C. Redding

University of Tennessee

J.-M. Richard

Université de Lyon

D. Ries

Johannes Gutenberg-Universität Mainz

E. Rinaldi

RIKEN

N. Rizzi

Nagoya University

N. Rossi

Laboratori Nazionali del Gran Sasso

A. Ruggles

University of Tennessee

B. Rybolt

Kennesaw State University

V. Santoro

European Spallation Source (ESS)

U. Sarkar

Indian Institute of Technology Kharagpur

A. Saunders

European Spallation Source (ESS)

G. Senjanovic

Abdus Salam International Centre for Theoretical Physics

A.P. Serebrov

Petersburg Nuclear Physics Institute (PNPI)

H.M. Shimizu

Moscow Institute of Physics and Technology

R. Shrock

Stony Brook University

S. Silverstein

Stockholms universitet

D. Silvermyr

Lunds universitet

William Snow

Indiana University

A. Takibayev

European Spallation Source (ESS)

I. Tkachev

Russian Academy of Sciences

L. Townsend

Joint Institute for Nuclear Research (JINR)

A. Tureanu

Helsingin Yliopisto

L. Varriano

University of Chicago

A. Vainshtein

University of Minnesota

J. De Vries

University of Massachusetts

R. Wagner

Institut Laue-Langevin

R. Woracek

European Spallation Source (ESS)

Y. Yamagata

RIKEN

S. Yiu

Stockholms universitet

A.R. Young

North Carolina State University

L. Zanini

European Spallation Source (ESS)

Z. Zhang

California Institute of Technology (Caltech)

O. Zimmer

Institut Laue-Langevin

Journal of Physics G: Nuclear and Particle Physics

0954-3899 (ISSN)

Vol. 48 7 070501

Ämneskategorier

Acceleratorfysik och instrumentering

Subatomär fysik

Fusion, plasma och rymdfysik

DOI

10.1088/1361-6471/abf429

Mer information

Senast uppdaterat

2021-07-01