Precise branching ratios to unbound 12C states from 12N and 12B [beta]-decays
Artikel i vetenskaplig tidskrift, 2009
Two complementary experimental techniques have been used to extract precise branching ratios to unbound states in 12C from 12N and 12B [beta]-decays. In the first the three [alpha]-particles emitted after [beta]-decay are measured in coincidence in separate detectors, while in the second method 12N and 12B are implanted in a detector and the summed energy of the three [alpha]-particles is measured directly. For the narrow states at 7.654 MeV (0+) and 12.71 MeV (1+) the resulting branching ratios are both smaller than previous measurements by a factor of [similar, equals]2. The experimental results are compared to no-core shell model calculations with realistic interactions from chiral perturbation theory, and inclusion of three-nucleon forces is found to give improved agreement.
Författare
S. Hyldegaard
Aarhus Universitet
Christian Forssen
Chalmers, Teknisk fysik, Subatomär fysik
C. A. Diget
University of York
M. Alcorta
CSIC - Instituto de Estructura de la Materia (IEM)
F.C. Barker
Australian National University
B. Bastin
KU Leuven
M. J. G. Borge
CSIC - Instituto de Estructura de la Materia (IEM)
R. Boutami
CSIC - Instituto de Estructura de la Materia (IEM)
S. Brandenburg
Kernfysisch Versneller Institut
J. Büscher
KU Leuven
P. Dendooven
Kernfysisch Versneller Institut
P. Van Duppen
KU Leuven
T. Eronen
Jyväskylän Yliopisto
S. Fox
University of York
B. Fulton
University of York
H. O. U. Fynbo
Aarhus Universitet
J. Huikari
Jyväskylän Yliopisto
M. Huyse
KU Leuven
H. B. Jeppesen
Lawrence Berkeley National Laboratory
A. Jokinen
Jyväskylän Yliopisto
Björn Jonson
Chalmers, Teknisk fysik, Subatomär fysik
K. Jungmann
Kernfysisch Versneller Institut
A. Kankainen
Jyväskylän Yliopisto
O. Kirsebom
Aarhus Universitet
M. Madurga
CSIC - Instituto de Estructura de la Materia (IEM)
I. Moore
Jyväskylän Yliopisto
P. Navrátil
Lawrence Livermore National Laboratory
Thomas Nilsson
Chalmers, Teknisk fysik, Subatomär fysik
Göran Hugo Nyman
Chalmers, Teknisk fysik, Subatomär fysik
G.J.G. Onderwater
Kernfysisch Versneller Institut
H. Penttilä
Jyväskylän Yliopisto
K. Peräjärvi
Jyväskylän Yliopisto
R. Raabe
KU Leuven
K. Riisager
Aarhus Universitet
S. Rinta-Antila
Jyväskylän Yliopisto
A. Rogachevskiy
Kernfysisch Versneller Institut
A. Saastamoinen
Jyväskylän Yliopisto
M. Sohani
Kernfysisch Versneller Institut
O. Tengblad
CSIC - Instituto de Estructura de la Materia (IEM)
E. Traykov
Kernfysisch Versneller Institut
James P. Vary
Iowa State University
Y. Wang
Jyväskylän Yliopisto
K. Wilhelmsen
Chalmers
H.W. Wilschut
Kernfysisch Versneller Institut
J. Aysto
Jyväskylän Yliopisto
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
0370-2693 (ISSN)
Vol. 678 5 459 - 464Ämneskategorier
Subatomär fysik
Astronomi, astrofysik och kosmologi
DOI
10.1016/j.physletb.2009.06.064