Extracting the f0(980) signal from the photoproduced π+ π- spectrum
We present a phenomenological analysis of the π+π- photoproduction data obtained by the CLAS collaboration at the Thomas Jefferson Laboratory. A special emphasis is put on the interference pattern observed in the moments of angular distribution for the π+π- efective masses around 1 GeV. This pattern...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2012-12-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20123709009 |
| _version_ | 1818904325605294080 |
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| author | Leśniak Leonard Bibrzycki Łukasz |
| author_facet | Leśniak Leonard Bibrzycki Łukasz |
| author_sort | Leśniak Leonard |
| collection | DOAJ |
| description | We present a phenomenological analysis of the π+π- photoproduction data obtained by the CLAS collaboration at the Thomas Jefferson Laboratory. A special emphasis is put on the interference pattern observed in the moments of angular distribution for the π+π- efective masses around 1 GeV. This pattern is attributed to the photoproduction of the scalar-isoscalar resonance f0(980). By fitting the model parameters to the data we obtain the strengths of the resonant and nonresonant parts of the S-wave photoproduction amplitude. We calculate the f0(980) photoproduction cross section which is smaller than previous estimations by a factor of about 5. A new estimation of the product of the σ meson couplings to nucleon and to the γρ system |gNNσgγρσ| is given. |
| first_indexed | 2024-12-19T21:05:39Z |
| format | Article |
| id | doaj.art-631e0144455a4626a1a3ea93e4697184 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T21:05:39Z |
| publishDate | 2012-12-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-631e0144455a4626a1a3ea93e46971842022-12-21T20:05:38ZengEDP SciencesEPJ Web of Conferences2100-014X2012-12-01370900910.1051/epjconf/20123709009Extracting the f0(980) signal from the photoproduced π+ π- spectrumLeśniak LeonardBibrzycki ŁukaszWe present a phenomenological analysis of the π+π- photoproduction data obtained by the CLAS collaboration at the Thomas Jefferson Laboratory. A special emphasis is put on the interference pattern observed in the moments of angular distribution for the π+π- efective masses around 1 GeV. This pattern is attributed to the photoproduction of the scalar-isoscalar resonance f0(980). By fitting the model parameters to the data we obtain the strengths of the resonant and nonresonant parts of the S-wave photoproduction amplitude. We calculate the f0(980) photoproduction cross section which is smaller than previous estimations by a factor of about 5. A new estimation of the product of the σ meson couplings to nucleon and to the γρ system |gNNσgγρσ| is given.http://dx.doi.org/10.1051/epjconf/20123709009 |
| spellingShingle | Leśniak Leonard Bibrzycki Łukasz Extracting the f0(980) signal from the photoproduced π+ π- spectrum EPJ Web of Conferences |
| title | Extracting the f0(980) signal from the photoproduced π+ π- spectrum |
| title_full | Extracting the f0(980) signal from the photoproduced π+ π- spectrum |
| title_fullStr | Extracting the f0(980) signal from the photoproduced π+ π- spectrum |
| title_full_unstemmed | Extracting the f0(980) signal from the photoproduced π+ π- spectrum |
| title_short | Extracting the f0(980) signal from the photoproduced π+ π- spectrum |
| title_sort | extracting the f0 980 signal from the photoproduced π π spectrum |
| url | http://dx.doi.org/10.1051/epjconf/20123709009 |
| work_keys_str_mv | AT lesniakleonard extractingthef0980signalfromthephotoproducedppspectrum AT bibrzyckiłukasz extractingthef0980signalfromthephotoproducedppspectrum |