E+e- pairs from a nuclear transition signaling an elusive light neutral boson

A. Krasznahorkay, F. W N De Boer, M. Csatlós, L. Csige, Z. Gácsi, J. Gulyás, M. Hunyadi, T. J. Ketel, J. Van Klinken, A. Krasznahorkay, A. Vitéz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Electron-positron pairs have been observed in the 10.95-MeV 0- → 0+ decay in 16O. The branching ratio of the e +e- pairs compared to the 3.84-MeV 0- → 2+ γ decay of the level is deduced to be 20(5) × 10 -5. This magnetic monopole (M0) transition cannot proceed by γ-ray decay and is, to first order, forbidden for internal pair creation. However, the transition may also proceed by the emission of a light neutral 0- or 1+ boson. Indeed, we do observe a sharp peak in the e+e- angular correlation with all the characteristics belonging to the intermediate emission of such a boson with an invariant mass of 8.5(5) MeV/c2. It may play a role in the current quest for light dark matter in the universe.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages236-241
Number of pages6
Volume802
DOIs
Publication statusPublished - Nov 21 2005
EventInternational Symposium on Exotic Nuclear Systems, ENS'05 - Debrecen, Hungary
Duration: Jun 20 2005Jun 25 2005

Other

OtherInternational Symposium on Exotic Nuclear Systems, ENS'05
CountryHungary
CityDebrecen
Period6/20/056/25/05

Fingerprint

bosons
decay
electron-positron pairs
magnetic monopoles
angular correlation
dark matter
rays
universe

Keywords

  • Anomal IPC
  • Dark matter
  • Light boson
  • Magnetic monopole transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Krasznahorkay, A., De Boer, F. W. N., Csatlós, M., Csige, L., Gácsi, Z., Gulyás, J., ... Vitéz, A. (2005). E+e- pairs from a nuclear transition signaling an elusive light neutral boson. In AIP Conference Proceedings (Vol. 802, pp. 236-241) https://doi.org/10.1063/1.2140659

E+e- pairs from a nuclear transition signaling an elusive light neutral boson. / Krasznahorkay, A.; De Boer, F. W N; Csatlós, M.; Csige, L.; Gácsi, Z.; Gulyás, J.; Hunyadi, M.; Ketel, T. J.; Van Klinken, J.; Krasznahorkay, A.; Vitéz, A.

AIP Conference Proceedings. Vol. 802 2005. p. 236-241.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Krasznahorkay, A, De Boer, FWN, Csatlós, M, Csige, L, Gácsi, Z, Gulyás, J, Hunyadi, M, Ketel, TJ, Van Klinken, J, Krasznahorkay, A & Vitéz, A 2005, E+e- pairs from a nuclear transition signaling an elusive light neutral boson. in AIP Conference Proceedings. vol. 802, pp. 236-241, International Symposium on Exotic Nuclear Systems, ENS'05, Debrecen, Hungary, 6/20/05. https://doi.org/10.1063/1.2140659
Krasznahorkay A, De Boer FWN, Csatlós M, Csige L, Gácsi Z, Gulyás J et al. E+e- pairs from a nuclear transition signaling an elusive light neutral boson. In AIP Conference Proceedings. Vol. 802. 2005. p. 236-241 https://doi.org/10.1063/1.2140659
Krasznahorkay, A. ; De Boer, F. W N ; Csatlós, M. ; Csige, L. ; Gácsi, Z. ; Gulyás, J. ; Hunyadi, M. ; Ketel, T. J. ; Van Klinken, J. ; Krasznahorkay, A. ; Vitéz, A. / E+e- pairs from a nuclear transition signaling an elusive light neutral boson. AIP Conference Proceedings. Vol. 802 2005. pp. 236-241
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abstract = "Electron-positron pairs have been observed in the 10.95-MeV 0- → 0+ decay in 16O. The branching ratio of the e +e- pairs compared to the 3.84-MeV 0- → 2+ γ decay of the level is deduced to be 20(5) × 10 -5. This magnetic monopole (M0) transition cannot proceed by γ-ray decay and is, to first order, forbidden for internal pair creation. However, the transition may also proceed by the emission of a light neutral 0- or 1+ boson. Indeed, we do observe a sharp peak in the e+e- angular correlation with all the characteristics belonging to the intermediate emission of such a boson with an invariant mass of 8.5(5) MeV/c2. It may play a role in the current quest for light dark matter in the universe.",
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AB - Electron-positron pairs have been observed in the 10.95-MeV 0- → 0+ decay in 16O. The branching ratio of the e +e- pairs compared to the 3.84-MeV 0- → 2+ γ decay of the level is deduced to be 20(5) × 10 -5. This magnetic monopole (M0) transition cannot proceed by γ-ray decay and is, to first order, forbidden for internal pair creation. However, the transition may also proceed by the emission of a light neutral 0- or 1+ boson. Indeed, we do observe a sharp peak in the e+e- angular correlation with all the characteristics belonging to the intermediate emission of such a boson with an invariant mass of 8.5(5) MeV/c2. It may play a role in the current quest for light dark matter in the universe.

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