27,298 research outputs found

    On the nature of the Lambda(1405) as a superposition of two states

    Full text link
    We use recent data on the Kβˆ’pβ†’Ο€0Ο€0Ξ£0K^- p \to \pi^0 \pi^0 \Sigma^0 reaction with the Ο€0Ξ£0\pi^0 \Sigma^0 mass distribution of forming the Ξ›(1405)\Lambda(1405) with a peak at 1420 MeV and a relatively narrow width of Ξ“=38\Gamma = 38 MeV, together with those of the Ο€βˆ’pβ†’K0πΣ\pi^- p \to K^0 \pi \Sigma reaction to show that there are two Ξ›(1405)\Lambda(1405) states instead of one as so far assumed.Comment: Contribution to the PANIC05 Conference, Santa Fe, October 200
    • …
    corecore