A study of the proton spectra following the capture of $K^-$ in $^6$Li and $^{12}$C with FINUDA

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dc.creatorAgnello, M.
dc.creatorBeer, G.
dc.creatorBenussi, L.
dc.creatorBertani, M.
dc.creatorBhang, H. C.
dc.creatorBianco, S.
dc.creatorBonomi, G.
dc.creatorBotta, E.
dc.creatorBregant, M.
dc.creatorBressani, T.
dc.creatorBufalino, S.
dc.creatorBusso, L.
dc.creatorCalvo, D.
dc.creatorCamerini, P.
dc.creatorCerello, P.
dc.creatorDalena, B.
dc.creatorDe Mori, F.
dc.creatorD'Erasmo, G.
dc.creatorDi Santo, D.
dc.creatorElia, D.
dc.creatorFabbri, F. L.
dc.creatorFaso, D.
dc.creatorFeliciello, A.
dc.creatorFilippi, A.
dc.creatorFilippini, V.
dc.creatorFini, R. A.
dc.creatorFiore, E. M.
dc.creatorFujioka, H.
dc.creatorGianotti, P.
dc.creatorGrion, N.
dc.creatorHartmann, O.
dc.creatorKrasnoperov, A.
dc.creatorLenti, V.
dc.creatorLucherini, V.
dc.creatorManzari, V.
dc.creatorMarcello, S.
dc.creatorMaruta, T.
dc.creatorMirfakhrai, N.
dc.creatorMorra, O.
dc.creatorNagae, T.
dc.creatorOlin, A.
dc.creatorOuta, H.
dc.creatorPace, E.
dc.creatorPallotta, M.
dc.creatorPalomba, M.
dc.creatorPantaleo, A.
dc.creatorPanzarasa, A.
dc.creatorPaticchio, V.
dc.creatorPiano, S.
dc.creatorPompili, F.
dc.creatorRui, R.
dc.creatorSimonetti, G.
dc.creatorSo, H.
dc.creatorTereshchenko, V.
dc.creatorTomassini, S.
dc.creatorToyoda, A.
dc.creatorWheadon, R.
dc.creatorZenoni, A.
dc.date2006-06-14
dc.date.accessioned2026-07-07T07:18:36Z
dc.date.available2026-07-07T07:18:36Z
dc.descriptionMomenta spectra of protons emitted following the capture of $K^-$ in $^6$Li and $^{12}$C have been measured with 1% resolution. The $^{12}$C spectrum is smooth whereas for $^6$Li a well defined peak appears at about 500 MeV/$c$. The first observation of a structure in this region was identified as a strange tribaryon or, possibly, a $\bar K$-nuclear state. The peak is correlated with a $π^-$ coming from $Σ^-$ decay in flight, selected by setting momenta larger than 275 MeV/$c$. The $Σ^-$ could be produced, together with a 500 MeV/$c$ proton, by the capture of a $K^-$ in a deuteron-cluster substructure of the $^6$Li nucleus. The capture rate for such a reaction is $(1.62\pm 0.23_{stat} ^{+0.71}_{-0.44}(sys))%/K^-_{stop}$, in agreement with the existing observations on $^4$He targets and with the hypothesis that the $^6$Li nucleus can be interpreted as a $(d+α)$ cluster.
dc.description21 pages, 10 figures. Accepted for publication in NPA
dc.identifierhttps://arxiv.org/abs/nucl-ex/0606021
dc.identifierhttp://arxiv.org/abs/nucl-ex/0606021
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114356
dc.subjectNuclear Experiment
dc.titleA study of the proton spectra following the capture of $K^-$ in $^6$Li and $^{12}$C with FINUDA
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