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 p ²/m ². 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.

References

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F.Tabakin and R.A.Eisenstein,Phys.Rev.,C31（1985）1857.[2]M.Kohno and W.Weise,Phys.Lett.,B179（1986）15.[3]M.Kohno and W.Weise,Nucl.Phys.,A479（1988）433.[4]M.A.Alberg et al.,Nucl.Phys.,A508（1990）323.[5]苏君辰，王秀江，朱耀银，《高能物理与核物理》，16（1986）40.[6]苏君辰，吴式枢，ChinesePhysics,8（1988）978.[7]苏君辰，陈佐群，吴式枢，Nucl.Phys.,A524（1991）615.[8]P.D.Barnes et al,Phys.Lett,B189（1987）249.[9]M.Burdardt and M.Dilling,Phys.Rev.,C37（1988）1362.

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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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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author:Yang Yi,

Department of Physics, Jilin University, Changchun, 130023

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1994-01-05

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.