Gluon Exchange Potential and Cross-Section for pp→ΛΛ Proce

Yang Yi; Yu Jianzhong; Zou Yongqing; Su Junchen

Chinese Physics C> 1994, Vol. 18> Issue(1) : 85-90

Gluon Exchange Potential and Cross-Section for pp→ΛΛ Proce

Department of Physics, Jilin University, Changchun, 130023

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Abstract：
One and two-gluon exchange potentials (OGEP and TGEP) relevant to the pp→ΛΛ transition process are derived from the S-matrix in the a　roximation of order p²/m². An effective transition potential obtained from these gluon exchange potentials by the constituent quark model is employed to calculate the differential and total cross-sections for the pp→ΛΛ reaction in the plane wave Born Approximation.The calculated result shows that the relativistic correction terms in the OGEP and TGEP give considerable improvements on the cross-section in comparison with the previous calculations performed by making use of the OGEP given in the extremely non-relativistic a　roximation.

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Yang Yi, Yu Jianzhong, Zou Yongqing and Su Junchen. Gluon Exchange Potential and Cross-Section for pp→ΛΛ Proce[J]. Chinese Physics C, 1994, 18(1): 85-90.

Yang Yi, Yu Jianzhong, Zou Yongqing and Su Junchen. Gluon Exchange Potential and Cross-Section for pp→ΛΛ Proce[J]. Chinese Physics C, 1994, 18(1): 85-90. shu

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Received: 1900-01-01
Revised: 1900-01-01

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