Determination of the eta'-proton scattering length in free space

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 -->

Druh dokumentu:	Working Paper
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:	Nuclear Experiment
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
Externí odkaz:	http://arxiv.org/abs/1404.5436 Zobrazit plný text záznamu View this record from Arxiv