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

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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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[2]	ZUO Wei. Effects of Three-body Forces and Relativistic Effect on Equation of State of Nuclear Matter. Chinese Physics C, 2002, 26(11): 1134-1141.
[3]	OUYANG Hua-Fu. Effects of the Space Charge Forces and the Beam Halo in a Cyclotron. Chinese Physics C, 2001, 25(7): 674-679.
[4]	Chen Yinbao,Huang Zhibin. Nonlinear Space Charge Effects and Emittance Growth in Linac. Chinese Physics C, 1999, 23(12): 1231-1242.
[5]	Ma Weixing. Searching for Dibaryon With Pion-Nucleus Double Charge Exchange Reaction. Chinese Physics C, 1998, 22(10): 955-958.
[6]	Li Yangguo. Antiproton-Nucleus Charge Exchange Reaction in Mirror Nuclei. Chinese Physics C, 1997, 21(6): 554-561.
[7]	Li Yangguo. Antiproton -Nucleus Charge Exchange Reaction and Inelastic Scattering. Chinese Physics C, 1996, 20(11): 1021-1027.
[8]	QING Cheng-Rui,HE Zhuo-Xiu,ZOU Bing-Song,JIANG Huan-Qing. Nuclear Fermi Motion Effect on Pion Double Charge Exchange. Chinese Physics C, 1991, 15(1): 46-51.
[9]	JIANG Huan-Qing,Zou Bing-Song. Pion-Nucleus Double Charge Exchange. Chinese Physics C, 1991, 15(12): 1115-1130.
[10]	PAN Ling-Jun,JIANG Huan-Qing,ZOU Bing-Song. A SYSTEMATIC DISTORTED WAVE IMPULSE APPROXIMATION ANALYSIS OF THE CONVENTIONAL MECHANISM FOR PION DOUBLE CHARGE EXCHANGE. Chinese Physics C, 1990, 14(11): 1014-1022.
[11]	WU Hui-Fang,SONG Hong-Qiu. PION-SINGLE-CHARGE-EXCHANGE CONTRIBUTION TO NEUTRINOLESS DOUBLE BETA DECAY. Chinese Physics C, 1989, 13(8): 714-718.
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[13]	CHEN Ke-Zhong,JIANG Huan-Qing. MULTINUCLEON EFFECT IN PION SINGLE CHARGE EXCHANGE REACTION. Chinese Physics C, 1988, 12(1): 63-68.
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[15]	LU Shu-Cheng,PAN Zheng-Ying,WANG Yan-Seng. DIFFUSENESS AND DEFORMATION EFFECT IN NUCLEAR CHARGE RADIUS. Chinese Physics C, 1985, 9(5): 594-602.
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[17]	ZENG Jin-Yan (C. Y. Tseng). SHELL (DEFORMATION) EFFECT IN NUCLEAR CHARGE RADIUS. Chinese Physics C, 1983, 7(1): 101-108.
[18]	LIU Xian-Hui,LI Yang-Guo. QUADRUPOLE TRANSITION WITH π-NUCLEUS DOUBLE CHARGE EXCHANGE. Chinese Physics C, 1983, 7(2): 197-202.
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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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沈阳化工大学材料科学与工程学院沈阳 110142

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

LIU SHIAN-HUI
LI YANG-GUO

Received Date:1980-09-27
Accepted Date:1900-01-01
Available Online:1982-06-05

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.