Generalized Dalitz Plot analysis of the near threshold pp-->ppK+K- reaction in view of the K+K- final state interaction
| Autoři: | Silarski, M., Moskal, P., Czerwinski, E., Czyzykiewicz, R., Gil, D., Grzonka, D., Jarczyk, L., Kamys, B., Khoukaz, A., Klaja, J., Klaja, P., Krzemien, W., Oelert, W., Ritman, J., Sefzick, T., Siemaszko, M., Smyrski, J., Taschner, A., Winter, P., Wolke, M., Wustner, P., Zielinski, M., Zipper, W., Zdebik, J. |
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| Zdroj: | Phys.Rev.C80:045202,2009 |
| Rok vydání: | 2009 |
| Místo uložení: | High Energy Physics - Phenomenology |
| Témata: | High Energy Physics - Phenomenology |
| Popis: | The excitation function for the $pp\to ppK^+K^-$ reaction revealed a significant enhancement close to threshold which may plausibly be assigned to the influence of the $pK^-$ and $K^+K^-$ final state interactions. In an improved reanalysis of COSY-11 data for the $pp\to ppK^+K^-$ reaction at excess energies of Q = 10 MeV and 28 MeV including the proton-K- interaction the enhancement is confirmed. Invariant mass distributions for the two- and three-particle subsystems allow to test at low excess energies the ansatz and parameters for the description of the interaction in the ppK+K- system as derived from the COSY-ANKE data. Finally, based for the first time on the low energy K+K- invariant mass distributions and the generalized Dalitz plot analysis, we estimate the scattering length for the K+K- interaction to be |Re(a_K^+K^-)| = 0.5 + 4.0 -0.5 fm and Im(a_K^+K^-) = 3.0 +- 3.0 fm. Comment: 8 pages, 7 figures, to be published in Phys. Rev. C |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.80.045202 |
| Přístupová URL adresa: | http://arxiv.org/abs/0909.3974 |
| Přírůstkové číslo: | edsarx.0909.3974 |
| Autor: | Silarski, M., Moskal, P., Czerwinski, E., Czyzykiewicz, R., Gil, D., Grzonka, D., Jarczyk, L., Kamys, B., Khoukaz, A., Klaja, J., Klaja, P., Krzemien, W., Oelert, W., Ritman, J., Sefzick, T., Siemaszko, M., Smyrski, J., Taschner, A., Winter, P., Wolke, M., Wustner, P., Zielinski, M., Zipper, W., Zdebik, J. |
| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Phys.Rev.C80:045202,2009 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.80.045202 |
| Popis: | The excitation function for the $pp\to ppK^+K^-$ reaction revealed a significant enhancement close to threshold which may plausibly be assigned to the influence of the $pK^-$ and $K^+K^-$ final state interactions. In an improved reanalysis of COSY-11 data for the $pp\to ppK^+K^-$ reaction at excess energies of Q = 10 MeV and 28 MeV including the proton-K- interaction the enhancement is confirmed. Invariant mass distributions for the two- and three-particle subsystems allow to test at low excess energies the ansatz and parameters for the description of the interaction in the ppK+K- system as derived from the COSY-ANKE data. Finally, based for the first time on the low energy K+K- invariant mass distributions and the generalized Dalitz plot analysis, we estimate the scattering length for the K+K- interaction to be |Re(a_K^+K^-)| = 0.5 + 4.0 -0.5 fm and Im(a_K^+K^-) = 3.0 +- 3.0 fm. Comment: 8 pages, 7 figures, to be published in Phys. Rev. C |
| Databáze: | arXiv |
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