Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725105 | Physics Letters B | 2007 | 7 Pages |
Abstract
In a recent Z12âI orbifold model, an approximate Z2 symmetry which forbids the baryon number violating operators up to sufficiently high orders is found. The dimension-4 ÎBâ 0 operators of the MSSM fields occur at dimension 10. The effective dimension-5 ÎBâ 0 operators derived from these are harmless if some VEVs of neutral singlets are O(110) times the string scale. The main reason for forbidding these ÎBâ 0 operators up to such a high order is the large order N=12 of ZN since the H-momentum rule is (â1,1,1) mod (12,3,12). For a lower order N<12, the ÎBâ 0 operators would appear at lower dimensions.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Ian-Woo Kim, Jihn E. Kim, Bumseok Kyae,