Λ spin-orbit splitting deduced from DWIA analysis of the 89 Y (π + ,K + ) Λ 89 Y reaction

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Λ spin-orbit splitting deduced from DWIA analysis of the 89Y(π+,K+) Λ89Y reaction T. Motoba (Osaka E-C U.) D.J. Millener (Brookhaven N.L.) D. Lanskoy (Moscow State U.) Y. Yamamoto (Tsuru U.)

description

Λ spin-orbit splitting deduced from DWIA analysis of the 89 Y (π + ,K + ) Λ 89 Y reaction. T. Motoba (Osaka E-C U.) D.J. Millener (Brookhaven N.L.) D. Lanskoy (Moscow State U.) Y. Yamamoto (Tsuru U.). (π+,K+) reaction characteristics. - PowerPoint PPT Presentation

Transcript of Λ spin-orbit splitting deduced from DWIA analysis of the 89 Y (π + ,K + ) Λ 89 Y reaction

Page 1: Λ spin-orbit splitting deduced from DWIA analysis of the 89 Y (π + ,K + ) Λ 89 Y reaction

Λ spin-orbit splitting deduced from DWIA analysis of

the 89Y(π+,K+) Λ89Y reaction

T. Motoba (Osaka E-C U.)D.J. Millener (Brookhaven N.L.)D. Lanskoy (Moscow State U.)

Y. Yamamoto (Tsuru U.) 　

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(π+,K+) reaction characteristics

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T.Motoba, H. Bando, R. Wunsch, J.Zofka, Phys. Rev.C38 (1988)

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H. Hotchi et al,Phys. Rev. C64044302 (2001).

Great achievementgood resolution Γ=1.65 MeV

Ls splitting (ΔE): (f )=1.70 MeV (d)=1.63 (p)= 1.37

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High resolution γ-ray mesurements

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How to understand “large” splitting of subpeaks observed in heavy systems 　

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ΔE is not proportional to (2l+1)

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XS ratio is determined as 　

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EXP vs. DWIA CAL(WS, VLS=4.3MeV)

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Take core-excited states seriously ： up to the level of p-shell

hypernuclei

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CONCLUSION (1)Reproduce cross section ratios among a series of pronounced peaks and sub-peaks.

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CONCLUSION(2) Observed energy spacing between doublet li

ke sub-peaks (3L-3R) are reproduced wit

h δ(f)=0.20 MeV, which leads to δ(d)=0.15 M

eV and δ(p)=0.09 MeV.

(cf. Λ １３ C:δ(p)=0.152+-0.07 MeV)

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CONCLUSION

（３） even the GS peak should consists of two components. (See the exp. GS peak The present analysis leads to the prediction that.)

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CONCLUSION (4) 　Right partner(s) contain parity-mixing

contributions :example for 3R: [1p1/2f7/2hole] Λ （ d3/2 ）

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New insight into (π+,K+) spectra for other medium-heavy hypernuclei

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END

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Ελλάα 2 - EENE · Πιύ 0 2 0 όι 2α πράγμαα η χώρα κινούναι προς η ωή ή η λάθος καύθυνη; 7 80 78 88 89 92 84 61 89 92 2009 (n=2000)

λ peak =5,27 x 10 -7 nm λ peak T=b λ peak =5,8 x 10 -7 nm λ peak =6,4 x 10 -7 nm λ peak =7,2 x 10 -7 nm λ peak =8,3 x 10 -7 nm Radiazione del corpo nero.

λ peak =5,27 x 10 -7 nm λ peak T=b λ peak =5,8 x 10 -7 nm λ peak =6,4 x 10 -7 nm λ peak =7,2 x 10 -7 nm λ peak =8,3 x 10 -7 nm Radiazione del corpo nero.

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