Direct Observation of Proton Emission in ^{11}Be

The elusive β^{-}p^{+} decay was observed in ^{11}Be by directly measuring the emitted protons and their energy distribution for the first time with the prototype Active Target Time Projection Chamber in an experiment performed at ISAC-TRIUMF. The measured β^{-}p^{+} branching ratio is orders of mag...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2019-08, Vol.123 (8), p.082501-082501
Main Authors: Ayyad, Y, Olaizola, B, Mittig, W, Potel, G, Zelevinsky, V, Horoi, M, Beceiro-Novo, S, Alcorta, M, Andreoiu, C, Ahn, T, Anholm, M, Atar, L, Babu, A, Bazin, D, Bernier, N, Bhattacharjee, S S, Bowry, M, Caballero-Folch, R, Cortesi, M, Dalitz, C, Dunling, E, Garnsworthy, A B, Holl, M, Kootte, B, Leach, K G, Randhawa, J S, Saito, Y, Santamaria, C, Šiurytė, P, Svensson, C E, Umashankar, R, Watwood, N, Yates, D
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The elusive β^{-}p^{+} decay was observed in ^{11}Be by directly measuring the emitted protons and their energy distribution for the first time with the prototype Active Target Time Projection Chamber in an experiment performed at ISAC-TRIUMF. The measured β^{-}p^{+} branching ratio is orders of magnitude larger than any previous theoretical model predicted. This can be explained by the presence of a narrow resonance in ^{11}B above the proton separation energy.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.123.082501