On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8Be

On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8Be

Electron-positron angular correlations were remeasured for the 17.6 MeV (Jπ = 1+ → 0+) ground state transition in 8Be using an improved setup compared to one we used previously. Significant deviations from the internal pair creation was observed at large angles in the angular correlations, which sup...

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Main Authors: Krasznahorkay A.J., Csatlós M., Csige L., Gulyás J., Ketel T.J., Krasznahorkay A., Kuti I., Nagy Á., Nyakó B.M., Sas N., Timár J.
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201714201019
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spelling doaj-f4e6e208fb5c4a11b4cc596f3c277bb52021-08-02T05:10:17ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011420101910.1051/epjconf/201714201019epjconf_admpp2017_01019On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8BeKrasznahorkay A.J.0Csatlós M.1Csige L.2Gulyás J.3Ketel T.J.4Krasznahorkay A.5Kuti I.6Nagy Á.7Nyakó B.M.8Sas N.9Timár J.10Institute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiInstitute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiInstitute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiInstitute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiNikhef National Institute for Subatomic PhysicsCERN,European Organization for Nuclear ReasearchInstitute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiInstitute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiInstitute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiInstitute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiInstitute for Nuclear Research, Hungarian Academy of Sciences, MTA AtomkiElectron-positron angular correlations were remeasured for the 17.6 MeV (Jπ = 1+ → 0+) ground state transition in 8Be using an improved setup compared to one we used previously. Significant deviations from the internal pair creation was observed at large angles in the angular correlations, which supports that, in an intermediate step, a neutral isoscalar particle with a mass of 17.0±0.5 (stat)±0.5 (sys) MeV/c2 and Jπ = 1+ was created.https://doi.org/10.1051/epjconf/201714201019
collection DOAJ
language English
format Article
sources DOAJ
author Krasznahorkay A.J.
Csatlós M.
Csige L.
Gulyás J.
Ketel T.J.
Krasznahorkay A.
Kuti I.
Nagy Á.
Nyakó B.M.
Sas N.
Timár J.
spellingShingle Krasznahorkay A.J.
Csatlós M.
Csige L.
Gulyás J.
Ketel T.J.
Krasznahorkay A.
Kuti I.
Nagy Á.
Nyakó B.M.
Sas N.
Timár J.
On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8Be
EPJ Web of Conferences
author_facet Krasznahorkay A.J.
Csatlós M.
Csige L.
Gulyás J.
Ketel T.J.
Krasznahorkay A.
Kuti I.
Nagy Á.
Nyakó B.M.
Sas N.
Timár J.
author_sort Krasznahorkay A.J.
title On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8Be
title_short On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8Be
title_full On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8Be
title_fullStr On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8Be
title_full_unstemmed On the creation of the 17 MeV X boson in the 17.6 MeV M1 transition of 8Be
title_sort on the creation of the 17 mev x boson in the 17.6 mev m1 transition of 8be
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2017-01-01
description Electron-positron angular correlations were remeasured for the 17.6 MeV (Jπ = 1+ → 0+) ground state transition in 8Be using an improved setup compared to one we used previously. Significant deviations from the internal pair creation was observed at large angles in the angular correlations, which supports that, in an intermediate step, a neutral isoscalar particle with a mass of 17.0±0.5 (stat)±0.5 (sys) MeV/c2 and Jπ = 1+ was created.
url https://doi.org/10.1051/epjconf/201714201019
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