Precise branching ratios to unbound 12C states from 12N and 12B [beta]-decays
Journal article, 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.

Author

S. Hyldegaard

Aarhus University

Christian Forssen

Chalmers, Applied Physics, Subatomic Physics

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

University of Jyväskylä

S. Fox

University of York

B. Fulton

University of York

H. O. U. Fynbo

Aarhus University

J. Huikari

University of Jyväskylä

M. Huyse

KU Leuven

H. B. Jeppesen

Lawrence Berkeley National Laboratory

A. Jokinen

University of Jyväskylä

Björn Jonson

Chalmers, Applied Physics, Subatomic Physics

K. Jungmann

Kernfysisch Versneller Institut

A. Kankainen

University of Jyväskylä

O. Kirsebom

Aarhus University

M. Madurga

CSIC - Instituto de Estructura de la Materia (IEM)

I. Moore

University of Jyväskylä

P. Navrátil

Lawrence Livermore National Laboratory

Thomas Nilsson

Chalmers, Applied Physics, Subatomic Physics

Göran Hugo Nyman

Chalmers, Applied Physics, Subatomic Physics

G.J.G. Onderwater

Kernfysisch Versneller Institut

H. Penttilä

University of Jyväskylä

K. Peräjärvi

University of Jyväskylä

R. Raabe

KU Leuven

K. Riisager

Aarhus University

S. Rinta-Antila

University of Jyväskylä

A. Rogachevskiy

Kernfysisch Versneller Institut

A. Saastamoinen

University of Jyväskylä

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

University of Jyväskylä

K. Wilhelmsen

Chalmers

H.W. Wilschut

Kernfysisch Versneller Institut

J. Aysto

University of Jyväskylä

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

0370-2693 (ISSN)

Vol. 678 5 459 - 464

Subject Categories

Subatomic Physics

Astronomy, Astrophysics and Cosmology

DOI

10.1016/j.physletb.2009.06.064

More information

Latest update

9/10/2018