CONSISTENCY CHECKS OF GRAND UNIFIED THEORIES

被引:113
作者
AMALDI, U
DEBOER, W
FRAMPTON, PH
FURSTENAU, H
LIU, JT
机构
[1] UNIV FLORENCE,I-50125 FLORENCE,ITALY
[2] UNIV KARLSRUHE,INST EXPTL KERNPHYS,W-7500 KARLSRUHE 1,GERMANY
[3] UNIV N CAROLINA,INST FIELD PHYS,DEPT PHYS & ASTRON,CHAPEL HILL,NC 27599
关键词
D O I
10.1016/0370-2693(92)91158-6
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The world averaged values of the electroweak and strong couplings and the lower limits on the proton lifetime are used for consistency checks of grand unified theories (GUTs). It is confirmed that new physics outside the standard model (SM) is required to obtain unification of the electroweak and strong forces. Such new physics could come from the minimal supersymmetric extension of the SM, which provides unification consistent with the present limits on the proton lifetime, but also nonsupersymmetric models based on additional split multiplets show similar unification properties. The results can be summarized as constraints on the slope differences of the coupling constants. These conditions have to be satisfied by any unified model having a single threshold at about 1 TeV, but cannot distinguish between them. Only future experiments will be able to do so.
引用
收藏
页码:374 / 382
页数:9
相关论文
共 48 条
  • [1] COMPREHENSIVE ANALYSIS OF DATA PERTAINING TO THE WEAK NEUTRAL CURRENT AND THE INTERMEDIATE-VECTOR-BOSON MASSES
    AMALDI, U
    BOHM, A
    DURKIN, LS
    LANGACKER, P
    MANN, AK
    MARCIANO, WJ
    SIRLIN, A
    WILLIAMS, HH
    [J]. PHYSICAL REVIEW D, 1987, 36 (05) : 1385 - 1407
  • [2] COMPARISON OF GRAND UNIFIED THEORIES WITH ELECTROWEAK AND STRONG COUPLING-CONSTANTS MEASURED AT LEP
    AMALDI, U
    DEBOER, W
    FURSTENAU, H
    [J]. PHYSICS LETTERS B, 1991, 260 (3-4) : 447 - 455
  • [3] THE EFFECTIVE EXPERIMENTAL CONSTRAINTS ON MU-SUSY AND MU-GUT
    ANSELMO, F
    CIFARELLI, L
    PETERMAN, A
    ZICHICHI, A
    [J]. NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS, 1991, 104 (12): : 1817 - 1834
  • [4] SIMPLE TREATMENT OF THRESHOLD EFFECTS
    ANTONIADIS, I
    KOUNNAS, C
    TAMVAKIS, K
    [J]. PHYSICS LETTERS B, 1982, 119 (4-6) : 377 - 380
  • [5] BABIERI R, 1988, RIV NUOVO CIMENTO, V11, P1
  • [6] GRAND UNIFICATION AND THE SUPERSYMMETRIC THRESHOLD
    BARBIERI, R
    HALL, LJ
    [J]. PHYSICAL REVIEW LETTERS, 1992, 68 (06) : 752 - 753
  • [7] DEEP-INELASTIC SCATTERING BEYOND THE LEADING ORDER IN ASYMPTOTICALLY FREE GAUGE THEORIES
    BARDEEN, WA
    BURAS, AJ
    DUKE, DW
    MUTA, T
    [J]. PHYSICAL REVIEW D, 1978, 18 (11): : 3998 - 4017
  • [8] CARTER J, 1991, IN PRESS JUL P JOINT
  • [9] COSTA G, 1988, NUCL PHYS B, V297, P1
  • [10] RELATIONS BETWEEN THE ON-SHELL AND MS FRAMEWORKS AND THE MW-MZ INTERDEPENDENCE
    DEGRASSI, G
    FANCHIOTTI, S
    SIRLIN, A
    [J]. NUCLEAR PHYSICS B, 1991, 351 (1-2) : 49 - 69