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HLAB meeting 論文 紹介

HLAB meeting 論文 紹介. 18/Oct/2011 Toshi Gogami. Title. A bstract. X-ray spectroscopy of kaonic atoms. 2p. An accurate determination of the K-N iso -spin dependent scattering length  Strong constrains on the low-energy K-N dynamics ( S.Deser et al., Phys. Rev. 98(1954)774 ). 1s.

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HLAB meeting 論文 紹介

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  1. HLAB meeting論文紹介 18/Oct/2011 Toshi Gogami

  2. Title

  3. Abstract

  4. X-ray spectroscopy of kaonic atoms 2p • An accurate determination of the K-N iso-spin dependent scattering length  Strong constrains on the low-energy K-N dynamics ( S.Deser et al., Phys. Rev. 98(1954)774 ) 1s 2p-1s X-ray (~6 KeV) WidthΓ1s Strong interaction ShiftΔE1s 1s (only coulomb) Nuclear absorption Kaonic hydrogen

  5. Results of KH from the past experiments Progress in Particle and Nuclear Physics 61 (2008) 512-550 Attractive Repulsive • Davies et al. 1979 • Bird et al. 1983 • Izycki et al. 1980 K- p

  6. Experimental setup Nuclear Instruments and Methods in PRA 581 (2007)326-329 Gaseous target X-ray K- e+ e- φ K+

  7. What are differences ?

  8. Time gate • K- K+ coincidence time WRT RF signal (~368MHz) • K- K+ coin & x-ray

  9. arXiv:1105.3090v2 (2011) 9/Aug Result of the KH • Γ1s= 541 ± 89(stat.) ± 22(sys.) [eV] • ΔE1s = −283 ± 36(stat.) ± 6(sys.) [eV]

  10. Result of the KH arXiv:1105.3090v2 (2011) • Γ1s = 541 ± 89(stat.) ± 22(sys.) [eV] • ΔE1s = −283 ± 36(stat.) ± 6(sys.) [eV]

  11. Kaonic He puzzle 8 SSDs, 1 months PLB 653 (2007) 387-391 • KEK-PS E570 • 6467±2(stat.)±2(sys.) [eV] • ΔE2p = 2±2(stat.)±2(sys.) [eV] Theories

  12. Results of KaonicHe Kaonic Helium3 Kaonic Helium4 144 SSDs, a few days • 数値

  13. Results of KaonicHe Kaonic Helium3 Kaonic Helium4 SIDDHARTA 144 SSDs, a few days • 数値 KEK E570

  14. Summary • K-p ( arXiv:1105.3090v2 (2011) ) • Γ1s = 541 ± 89(stat.) ± 22(sys.) [eV] • ΔE1s = −283 ± 36(stat.) ± 6(sys.) [eV] • K-3He • The first time measurement (PLB 697 (2011)199) • -2±2(stat.)±4(sys.) • K-4He • PLB 681(2009)310 • +0±6(stat.)±2(sys.) • K-d • The first exploratory measurement SIDDHARTA-2 SIDDHARTA-2 Collaboration, Proposal of LaboratoriNazionali di Frascati of INFN, The upgrade of the SIDDHARTA apparatus for an enriched scientific case (2010).

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