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.
K - multi-nucleon absorption cross sections and branching ratios in Λ p and Σ p final states / Del Grande, R., Piscicchia, K., Vazquez Doce, O., Cargnelli, M., Curceanu, C., Fabbietti, L., Marton, J., Moskal, P., Ramos, A., Scordo, A., Sirghi, D., Skurzok, M., Wycech, S., Zmeskal, J., Czerwinski, E., De Leo, V., Fermani, P., Mandaglio, G., Martini, M., Raha, N., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 79:3(2019). [10.1140/epjc/s10052-019-6694-7]
K - multi-nucleon absorption cross sections and branching ratios in Λ p and Σ p final states
Fermani, P.;
2019
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.| File | Dimensione | Formato | |
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