Publication
Baryonic resonances close to the $\bar{K}$ N threshold: The Case of $\Sigma(1385)^+$ in pp collisions
| dc.contributor.author | HADES collaboration (102 authors) | |
| dc.contributor.author | Blanco, A. | |
| dc.contributor.author | Fonte, P. | |
| dc.contributor.author | Lopes, L. | |
| dc.contributor.author | Mangiarotti, A. | |
| dc.date.accessioned | 2019-02-03T18:12:30Z | |
| dc.date.available | 2019-02-03T18:12:30Z | |
| dc.date.issued | 2011-09 | |
| dc.date.updated | 2019-02-03T18:12:30Z | |
| dc.description.abstract | We present results of an exclusive measurement of the first excited state of the Sigma hyperon, Sigma(1385)^+, produced in p+p -> Sigma^+ + K^+ + n at 3.5 GeV beam energy. The extracted data allow to study in detail the invariant mass distribution of the Sigma(1385)^+. The mass distribution is well described by a relativistic Breit-Wigner function with a maximum at m_0 = 1383.2 +- 0.9 MeV/c^2 and a width of 40.2 +- 2.1 MeV/c^2. The exclusive production cross-section comes out to be 22.27 +- 0.89 +- 1.56 +3.07 -2.10 mu b. Angular distributions of the Sigma(1385)^+ in different reference frames are found to be compatible with the hypothesis that 33 % of Sigma(1385)^+ result from the decay of an intermediate Delta^{++} resonance. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Rev. C85 (2012) 035203; DOI 10.1103/PhysRevC.85.035203 | |
| dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevC.85.035203 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26046 | |
| dc.language.iso | eng | |
| dc.title | Baryonic resonances close to the $\bar{K}$ N threshold: The Case of $\Sigma(1385)^+$ in pp collisions | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |