The determination of low-energy cross sections and branching ratios of the K - multi-nucleon absorption processes in Λ p and Σ p final states performed by the AMADEUS collaboration is presented. Low momentum K - (pK≃127MeV/c) produced at the DA Φ NE collider are impinged on a Carbon target within the KLOE detector and the two and three nucleon absorption processes are disentangled by comparing the experimental data to phenomenological calculations. The Λ p spectra are interpreted in terms of K - multi-nucleon absorption processes; the possible contribution of a K - pp bound state is demonstrated to overlap with the two nucleon capture process, its absolute yield thus resulting indistinguishable.
Del Grande, R., Piscicchia, K., Vazquez Doce, O., Cargnelli, M., Curceanu, C., Fabbietti, L., et al. (2019). K - multi-nucleon absorption cross sections and branching ratios in Λ p and Σ p final states. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(3) [10.1140/epjc/s10052-019-6694-7].
K - multi-nucleon absorption cross sections and branching ratios in Λ p and Σ p final states
Selce A.;
2019-01-01
Abstract
The determination of low-energy cross sections and branching ratios of the K - multi-nucleon absorption processes in Λ p and Σ p final states performed by the AMADEUS collaboration is presented. Low momentum K - (pK≃127MeV/c) produced at the DA Φ NE collider are impinged on a Carbon target within the KLOE detector and the two and three nucleon absorption processes are disentangled by comparing the experimental data to phenomenological calculations. The Λ p spectra are interpreted in terms of K - multi-nucleon absorption processes; the possible contribution of a K - pp bound state is demonstrated to overlap with the two nucleon capture process, its absolute yield thus resulting indistinguishable.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
