TY  - JOUR
AU  - Adlarson, P. et al.
AU  - Baru, V.
AU  - Bashkanov, M.
AU  - Berlowski, M.
AU  - Bhatt, H.
AU  - Buescher, M.
AU  - Calen, H.
AU  - Clement, H.
AU  - Engels, R.
AU  - Erven, W.
AU  - Eyrich, W.
AU  - Fedorets, P.
AU  - Fransson, K.
AU  - Goldenbaum, F.
AU  - Hanhart, C.
AU  - Hejny, V.
AU  - Hinterberger, F.
AU  - Jarczyk, L.
AU  - Kamys, B.
AU  - Khoukaz, A.
TI  - Abashian-Booth-Crowe Effect in Basic Double-Pionic Fusion: A New Resonance?
JO  - Physical review letters
VL  - 106
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-18776
SP  - 242302
PY  - 2011
N1  - We acknowledge valuable discussions with L. Alvarez-Ruso, A. Kudryavtsev, E. Oset, A. Sibirtsev, F. Wang, and C. Wilkin on this issue. This work has been supported by BMBF (06TU9193), Forschungszentrum Julich (COSY-FFE), DFG (683) and the Foundation for Polish Science (MPD) and EU (Regional Development Fund).
AB  - We report on an exclusive and kinematically complete high-statistics measurement of the basic double-pionic fusion reaction pn -> d pi(0)pi(0) over the full energy region of the ABC effect, a pronounced low-mass enhancement in the pi pi-invariant mass spectrum. The measurements, which cover also the transition region to the conventional t- channel Delta Delta process, were performed with the upgraded WASA detector setup at COSY. The data reveal the Abashian-Booth-Crowe effect to be uniquely correlated with a Lorentzian energy dependence in the integral cross section. The observables are consistent with a narrow resonance with m = 2.37 GeV, Gamma approximate to 70 MeV and I(J(P)) = 0(3(+)) in both pn and Delta Delta systems. Necessary further tests of the resonance interpretation are discussed.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000291734300003
DO  - DOI:10.1103/PhysRevLett.106.242302
UR  - https://juser.fz-juelich.de/record/18776
ER  -