dc.contributor.author |
Rakityansky, Sergei Anatoljevich
|
|
dc.contributor.author |
Elander, N.
|
|
dc.date.accessioned |
2014-09-05T08:42:52Z |
|
dc.date.available |
2014-09-05T08:42:52Z |
|
dc.date.issued |
2013 |
|
dc.description.abstract |
Within the proposed method, a set of experimental data points are fitted using a
multi-channel S-matrix. Then the resonance parameters are located as its poles on an
appropriate sheet of the Riemann surface of the energy. The main advantage of the
method is that the S-matrix is constructed in such a way that it has proper analytic
structure, i.e. for any number of two-body channels, the branching at all the channel
thresholds is represented via exact analytic expressions in terms of the channel momenta.
The way the S-matrix is constructed makes it possible not only to locate multi-channel
resonances but also to extract their partial widths as well as to obtain the scattering cross-section in the channels for which no data are available. The efficiency of the
method is demonstrated by two model examples of a single-channel and a two-channel
problems, where known resonance parameters are rather accurately reproduced by fitting
the pseudo-data artificially generated using the corresponding potentials. |
en_US |
dc.description.librarian |
hb2014 |
en_US |
dc.description.uri |
http://www.worldscinet.com/ijmpe |
en_US |
dc.identifier.citation |
Rakityansky, SA & Elander, N 2013, 'A method for extracting the resonance parameters from experimental cross-sections', International Journal of Modern Physics E : Nuclear Physics, vol. 22, no. 5, pp. 1-17. |
en_US |
dc.identifier.issn |
0218-3013 (print) |
|
dc.identifier.issn |
1793-6608 (online) |
|
dc.identifier.other |
10.1142/S0218301313500328 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/41931 |
|
dc.language.iso |
en |
en_US |
dc.publisher |
World Scientific |
en_US |
dc.rights |
© World Scientific Publishing Company. Electronic version of an article published as International Journal of Modern Physics E, vol. 22, no. 5, pp. 1-17, 2013. doi : 10.1142/S0218301313500328. |
en_US |
dc.subject |
Multi-channel resonances |
en_US |
dc.subject |
Energy Riemann surface |
en_US |
dc.subject |
S-matrix |
en_US |
dc.title |
A method for extracting the resonance parameters from experimental cross-sections |
en_US |
dc.type |
Postprint Article |
en_US |