TY  - JOUR
AU  - HADES Collaboration (Agakishiev, G. et al
AU  - Diaz, J.
AU  - Gil, A.
PY  - 2010
DA  - 2010//
TI  - Lambda-p femtoscopy in collisions of Ar + KCl at 1.76AGeV
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 021901
EP  - 5pp
VL  - 82
IS  - 2
PB  - Amer Physical Soc
AB  - Results on Lambda p femtoscopy are reported at the lowest energy so far. At a beam energy of 1.76AGeV, the reaction Ar + KCl was studied with the High Acceptance Di-Electron Spectrometer ( HADES) at SIS18/GSI. A high-statistics and high-purity Lambda sample was collected, allowing for the investigation of Lambda p correlations at low relative momenta. The experimental correlation function is compared to corresponding model calculations allowing the determination of the space-time extent of the Lambda p emission source. The Lambda p source radius is found to be slightly smaller than the pp correlation radius for a similar collision system. The present Lambda p radius is significantly smaller than that found for Au + Au/Pb + Pb collisions in the AGS, SPS, and RHIC energy domains but larger than that observed for electroproduction from He. Taking into account all available data, we find the Lambda p source radius to increase almost linearly with the number of participants to the power of one-third.
SN  - 0556-2813
UR  - http://arxiv.org/abs/1004.2328
UR  - https://doi.org/10.1103/PhysRevC.82.021901
DO  - 10.1103/PhysRevC.82.021901
LA  - English
N1  - ISI:000281017300001
ID  - HADESCollaborationAgakishiev_etal2010
ER  -