https://doi.org/10.1140/epja/i2014-14102-2
Regular Article - Experimental Physics
Isospin effects in the exclusive dp 
3He
reaction
1
Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, D-48149, Münster, Germany
2
Institut für Kernphysik and Jülich Centre for Hadron Physics, Forschungszentrum Jülich, D-52425, Jülich, Germany
3
High Energy Physics Institute, Tbilisi State University, GE-0186, Tbilisi, Georgia
4
Laboratory of Nuclear Problems, JINR, RU-141980, Dubna, Russia
5
H. Niewodniczanski Institute of Nuclear Physics PAN, PL-31342, Cracow, Poland
6
High Energy Physics Department, Petersburg Nuclear Physics Institute, RU-188350, Gatchina, Russia
7
Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115, Bonn, Germany
8
Physics and Astronomy Department, UCL, Gower Street, WC1E 6BT, London, UK
* e-mail: maltemielke@uni-muenster.de
Received:
7
April
2014
Revised:
8
May
2014
Accepted:
27
May
2014
Published online:
24
June
2014
The differential cross section for the exclusive 
reaction has been measured with high resolution and large statistics over a large fraction of the backward 3He hemisphere at the excess energy 265 MeV using the COSY-ANKE magnetic spectrometer. Though the well-known ABC enhancement is observed in the 
spectrum, the differences detected between the 
and 
invariant-mass distributions show that there must be some isospin-one 
production even at relatively low excess energies. The invariant-mass differences are modeled in terms of the sequential decay 
.
© SIF, Springer-Verlag Berlin Heidelberg, 2014
