A TRANSLATIONAL INVARIANT BAG MODEL AND THE PROTON LIFETIME

  • The effect of hadron structure on the rate of proton decay caused by baryon-num-ber violatng interantion in the SU(5) grand unified theories is considered. The protonlifetime is calculated using an improved translational invariant bag model. We dealwith recoil effect in the decay process properly and thus overcome some problems exis-ting in the popular bag model calculations, for example, "overestimating the wave func-tion overlaps" and adding "a form factor to describe the high momentum suppres-sion". Our result is consistent with recent experiments and can undergo further ex-perimental test. We obtain τp=1.39×1031 yr, for Mx=4.2×1014GeV.
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  • [1] H. Georgi and S. L. Glashaw, Phys. Rev. Lett., 32(1974), 438.[2] F. Refines and M. F. Crouch, Phys. Rev. Lett., 32(1974), 493.[3] M. Deakyne et al., Pennsylvania preprint, Presented at XVth Recontre de Moriond, Les Arca-Savois-France, 1980.[4] J. Ellie, M. H. Gaillard, D. V. Naaopoulone and S. Rudaz, Annecy preprint LAPP-TH-14 1980.[5] T. J. Goldman and D.Ross, Phys. Lett., 84B(1979), 208.[6] A. M. Din, G. Giradi and P. Sorba, Phys. Lett., 91B(1980), 77.[7] J. F. Donoghue, Phys. Lett., 92B(1980), 99.[8] E. Golowich, Phys. Rev., D22(1980), 1148.[9] J. F. Donoghu and K.Johnein, Phys. Rev., D21(1980), 1975.[10] 刘连寿、蔡助、杨仲乐, 科学通报, 26(1981), 465.[11] 蔡助、杨仲乐、刘连寿, 科学通报, 26(1981), 972.[12] K. Johnson, Phys. Lett., 78B(1978), 259.[13] R. L. Jaffe. MIM Preprint. CTP, 870(1980).[14] 刘连寿、杨仲乐、陈伟, 华中师范学院学报, (1981), 36.[15] M. B, Gavela, A. La yaouane, L. Oliver, O. Pene and J. C. Raynal, Oreay prerints LPTHE 80/6 and 80/15.[16] G. Kane and G. Karl, Michigan preprint.
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JIU ZHONG-PIN, LIU LIAN-SOU and LIU BAO-HUA. A TRANSLATIONAL INVARIANT BAG MODEL AND THE PROTON LIFETIME[J]. Chinese Physics C, 1982, 6(6): 702-710.
JIU ZHONG-PIN, LIU LIAN-SOU and LIU BAO-HUA. A TRANSLATIONAL INVARIANT BAG MODEL AND THE PROTON LIFETIME[J]. Chinese Physics C, 1982, 6(6): 702-710. shu
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Received: 1981-06-20
Revised: 1900-01-01
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A TRANSLATIONAL INVARIANT BAG MODEL AND THE PROTON LIFETIME

Abstract: The effect of hadron structure on the rate of proton decay caused by baryon-num-ber violatng interantion in the SU(5) grand unified theories is considered. The protonlifetime is calculated using an improved translational invariant bag model. We dealwith recoil effect in the decay process properly and thus overcome some problems exis-ting in the popular bag model calculations, for example, "overestimating the wave func-tion overlaps" and adding "a form factor to describe the high momentum suppres-sion". Our result is consistent with recent experiments and can undergo further ex-perimental test. We obtain τp=1.39×1031 yr, for Mx=4.2×1014GeV.

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