6533b85bfe1ef96bd12bacaf

RESEARCH PRODUCT

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

E. CzerwinskiP. MoskalM. SilarskiS. D. BassD. GrzonkaB. KamysA. KhoukazJ. KlajaW. KrzemienW. OelertJ. RitmanT. SefzickJ. SmyrskiA. TaschnerM. WolkeM. Zielinski

subject

Physics::Accelerator PhysicsFOS: Physical sciencesHigh Energy Physics::ExperimentNuclear Experiment (nucl-ex)Nuclear ExperimentNuclear ExperimentAstrophysics::Galaxy Astrophysics

description

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.

yearjournalcountryeditionlanguage
2014-04-22
https://dx.doi.org/10.48550/arxiv.1404.5436