This title appears in the Scientific Report :
2011
Please use the identifier:
http://hdl.handle.net/2128/7375 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.106.242302 in citations.
Abashian-Booth-Crowe Effect in Basic Double-Pionic Fusion: A New Resonance?
Abashian-Booth-Crowe Effect in Basic Double-Pionic Fusion: A New Resonance?
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...
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Personal Name(s): | Adlarson, P. et al. |
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Baru, V. / Bashkanov, M. / Berlowski, M. / Bhatt, H. / Buescher, M. / Calen, H. / Clement, H. / Engels, R. / Erven, W. / Eyrich, W. / Fedorets, P. / Fransson, K. / Goldenbaum, F. / Hanhart, C. / Hejny, V. / Hinterberger, F. / Jarczyk, L. / Kamys, B. / Khoukaz, A. | |
Contributing Institute: |
Experimentelle Hadrondynamik; IKP-2 Experimentelle Hadronstruktur; IKP-1 Zentralinstitut für Elektronik; ZEL Institut 3 (Theoretische Kernphysik); IKP-3 |
Published in: | Physical review letters, 106 (2011) S. 242302 |
Imprint: |
College Park, Md.
APS
2011
|
Physical Description: |
242302 |
DOI: |
10.1103/PhysRevLett.106.242302 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Physical Review Letters
106 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.106.242302 in citations.
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. |