CONSTRAINTS FROM PROTON DECAY IN THE FLIPPED SU(5)XU(1) SUPERSTRING MODEL

被引:14
作者
LEONTARIS, GK
TAMVAKIS, K
机构
[1] Theoretical Physics Division, University of Ioannina
关键词
D O I
10.1016/0370-2693(91)91621-2
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We discuss the constraints that emerge from the existence of dimension-5 baryon-violating operators in the flipped SU(5) x U(1) superstring model. These are constraints on matter field assignments and on singlet VEV values. Although baryon-violating dimension-5 operators that appear as quintic non-renormalizable terms vanish as has been proven before and as we verify here, effective dimension-5 operators resulting from Higgs exchange put non-trivial but feasible constraints on the model. Constraints are also extracted from the presence of higher order non-renormalizable terms that generate such operators which do not a priori vanish.
引用
收藏
页码:333 / 338
页数:6
相关论文
共 31 条
[11]  
DUBNAR DC, 1989, PHYS LETT B, V219, P76
[12]   A PHENOMENOLOGICAL COMPARISON OF CONVENTIONAL AND SUPERSYMMETRIC GUTS [J].
ELLIS, J ;
NANOPOULOS, DV ;
RUDAZ, S .
NUCLEAR PHYSICS B, 1982, 202 (01) :43-62
[13]  
ELLIS J, CERNTH585290 PREPR
[14]  
ELLIS J, 1982, PHYS LETT B, V124, P484
[15]   THE CONSTRUCTION OF REALISTIC 4-DIMENSIONAL STRINGS THROUGH ORBIFOLDS [J].
FONT, A ;
IBANEZ, LE ;
QUEVEDO, F ;
SIERRA, A .
NUCLEAR PHYSICS B, 1990, 331 (02) :421-474
[16]   A SUPERSTRING-INSPIRED STANDARD MODEL [J].
GREENE, BR ;
KIRKLIN, KH ;
MIRON, PJ ;
ROSS, GG .
PHYSICS LETTERS B, 1986, 180 (1-2) :69-76
[17]   A 3-GENERATION SUPERSTRING MODEL .2. SYMMETRY-BREAKING AND THE LOW-ENERGY THEORY [J].
GREENE, BR ;
KIRKLIN, KH ;
MIRON, PJ ;
ROSS, GG .
NUCLEAR PHYSICS B, 1987, 292 (03) :606-652
[18]   NONRENORMALIZABLE TERMS IN THE FREE FERMIONIC FORMULATION OF 4D-STRINGS [J].
KALARA, S ;
LOPEZ, JL ;
NANOPOULOS, DV .
PHYSICS LETTERS B, 1990, 245 (3-4) :421-428
[19]  
KALARA S, CTPTAMU3490 PREPR
[20]   CONSTRUCTION OF FERMIONIC STRING MODELS IN 4 DIMENSIONS [J].
KAWAI, H ;
LEWELLEN, DC ;
TYE, SHH .
NUCLEAR PHYSICS B, 1987, 288 (01) :1-76