SPIN EFFECT AND π-N OFF SHELL AMPLITUDE CORRECTION ON π-NUCLEUS DOUBLE CHARGE EXCHANGE REACTION

LIU SHIAN-HUI; LI YANG-GUO

Chinese Physics C> 1982, Vol. 6> Issue(3) : 292-296

SPIN EFFECT AND π-N OFF SHELL AMPLITUDE CORRECTION ON π-NUCLEUS DOUBLE CHARGE EXCHANGE REACTION

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Abstract：
We study the influence. of the spin terms and off shell correction of π-N amplitudeπ-nucleus double charge exchange reaction. It is showed that both greatly reduce thecross sections and improve the theoretical result to fit the experimental data better.Spin effect is importance in the (3,3) resonance energy region, but it is less importantin the higher energy.

References

[1]

刘宪辉等,高能物理与核物理,5(1981), 157.[2] R. Landau and F. Tabakin, Phys. Rev., D5(1972), 2746; J. Londergan et al., Ann. Phys., 86(1974), 147.[3] T. S. H. Lee et al., Phys. Lett., 67B(1977), 282.[4] J. R. Carter et al., Nud. Phys., B58(1973), 378.[5] E. Oset et al., Phys. Lett., 73B(1978), 393.[6] S. J. Green et al., Nucl. Phys., A335(1980), 2.

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LIU SHIAN-HUI and LI YANG-GUO. SPIN EFFECT AND π-N OFF SHELL AMPLITUDE CORRECTION ON π-NUCLEUS DOUBLE CHARGE EXCHANGE REACTION[J]. Chinese Physics C, 1982, 6(3): 292-296.

LIU SHIAN-HUI and LI YANG-GUO. SPIN EFFECT AND π-N OFF SHELL AMPLITUDE CORRECTION ON π-NUCLEUS DOUBLE CHARGE EXCHANGE REACTION[J]. Chinese Physics C, 1982, 6(3): 292-296. shu

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Received: 1980-09-27
Revised: 1900-01-01

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