The differential cross section for the exclusive dp -> 3He{\pi}+{\pi}- 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 {\pi}+{\pi}- spectrum, the differences detected between the {\pi}+3He and {\pi}-3He invariant-mass distributions show that there must be some isospin-one {\pi}{\pi} production even at relatively low excess energies. The invariant-mass differences are modeled in terms of the sequential decay N*(1440) -> Delta(1232){\pi} -> N{\pi}{\pi}.
@article{arxiv.1404.2066,
title = {Isospin effects in the exclusive dp -> 3He{\pi}+{\pi}- reaction},
author = {M. Mielke and I. Burmeister and D. Chiladze and S. Dymov and C. Fritzsch and R. Gebel and P. Goslawski and M. Hartmann and A. Kacharava and A. Khoukaz and P. Kulessa and B. Lorentz and T. Mersmann and S. Mikirtychiants and H. Ohm and M. Papenbrock and T. Rausmann and V. Serdyuk and H. Ströher and A. Täschner and Y. Valdau and C. Wilkin},
journal= {arXiv preprint arXiv:1404.2066},
year = {2015}
}