Determination of the eta'-proton scattering length in free space
Druh dokumentu: | Working Paper |
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DOI: | 10.1103/PhysRevLett.113.062004 |
Přístupová URL adresa: | http://arxiv.org/abs/1404.5436 |
Přírůstkové číslo: | edsarx.1404.5436 |
Autor: | Czerwinski, E., Moskal, P., Silarski, M., Bass, S. D., Grzonka, D., Kamys, B., Khoukaz, A., Klaja, J., Krzemien, W., Oelert, W., Ritman, J., Sefzick, T., Smyrski, J., Taschner, A., Wolke, M., Zielinski, M. |
Rok vydání: | 2014 |
Předmět: | |
Zdroj: | Phys. Rev. Lett. 113, 062004 (2014) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevLett.113.062004 |
Popis: | Taking advantage of both the high mass resolution of the COSY-11 detector and the high energy resolution of the low-emittance proton-beam of the Cooler Synchrotron COSY we determine the excitation function for the pp --> pp eta' reaction close-to-threshold. Combining these data with previous results we extract the scattering length for the eta'-proton potential in free space to be Re(a_{p eta'}) = 0+-0.43 fm and Im(a_{p eta'}) = 0.37(+0.40)(-0.16) fm. Comment: 5 pages, 3 figures, accepted for publication in Phys. Rev. Lett |
Databáze: | arXiv |
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