Krusche, B., Ahrens, J., Beck, R., MacGregor, I.J.D. , McGeorge, J.C., Metag, V. and Stroher, H. (2001) In-medium properties of the D13(1520)nucleon resonance. Physical Review Letters, 86(21), 4764 -4767. (doi: 10.1103/PhysRevLett.86.4764)
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Publisher's URL: http://dx.doi.org/10.1103/PhysRevLett.86.4764
Abstract
The in-medium properties of the D<sub>13</sub>(1520) nucleon resonance were studied via photoproduction of pi (0) mesons from nuclei (C, Ca, Nb, Pb) with the TAPS detector at the Mainz Microton accelerator. The inclusive (single and multiple pion production) data disagree with model predictions which explain the disappearance of the second resonance bump in total photoabsorption via a medium modification of the D<sub>13</sub> → N rho decay. The exclusive single pi (0) production data show no broadening of the resonance structure beyond Fermi smearing. Both results together cast doubt on attempts to explain the vanishing of the second resonance bump for nuclei by a broadening of the D<sub>13</sub> resonance.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | McGeorge, Dr John and MacGregor, Professor Douglas |
| Authors: | Krusche, B., Ahrens, J., Beck, R., MacGregor, I.J.D., McGeorge, J.C., Metag, V., and Stroher, H. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
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