STRONG EXTENDED TECHNICOLOR INTERACTIONS AND THE ZB(B)OVER-BAR VERTEX

被引：27
|
作者：
EVANS, N
机构：
[1] Department of Physics, University of Wales, Swansea, Swansea, SA2 8PP, Singleton park
来源：
PHYSICS LETTERS B | 1994年 / 331卷 / 3-4期
关键词：
D O I：
10.1016/0370-2693(94)91067-7
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
LEP precision measurements of the ZbbBAR vertex coupling are sufficiently accurate to see the non-oblique corrections from the heavy gauge boson responsible for the large top mass in standard extended technicolour models. If the ETC couplings are strong the techni-fermion condensate may be enhanced by several orders of magnitude allowing a top mass of order 150 GeV to be obtained for large values of the ETC breaking scale sufficient to suppress the ETC contribution to the ZbbBAR vertex. In this letter we investigate the degree of fine tuning of the ETC coupling required in a realistic model. We conclude that the fine tuning need only be of order 10%.
引用
收藏
页码：378 / 382
页数：5
相关论文
共 50 条
  • [1] Extended technicolor corrections to the Zb(b)over-bar vertex
    Yue, CX
    Kuang, YP
    Lu, GR
    Wan, LD
    [J]. COMMUNICATIONS IN THEORETICAL PHYSICS, 1997, 27 (02) : 225 - 228
  • [2] A HEAVY TOP-QUARK AND THE ZB(B)OVER-BAR VERTEX IN NON-COMMUTING EXTENDED TECHNICOLOR
    CHIVUKULA, RS
    SIMMONS, EH
    TERNING, J
    [J]. PHYSICS LETTERS B, 1994, 331 (3-4) : 383 - 389
  • [3] TECHNICOLOR CONTRIBUTION TO THE ZB(B)OVER-BAR VERTEX CORRECTION FROM THE SPECTRAL REPRESENTATION
    MAHANTA, U
    [J]. PHYSICAL REVIEW D, 1995, 51 (07): : 3557 - 3562
  • [4] Multiscale technicolour and the Zb(b)over-bar vertex
    Yue, CX
    Kuang, YP
    Lu, GR
    [J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1997, 23 (02) : 163 - 167
  • [5] NONOBLIQUE EFFECTS IN THE ZB(B)BAR VERTEX FROM EXTENDED TECHNICOLOR DYNAMICS
    CHIVUKULA, RS
    SELIPSKY, SB
    SIMMONS, EH
    [J]. PHYSICAL REVIEW LETTERS, 1992, 69 (04) : 575 - 577
  • [6] WALKING TECHNICOLOR AND THE ZB-B(BAR) VERTEX
    CHIVUKULA, RS
    GATES, E
    SIMMONS, EH
    TERNING, J
    [J]. PHYSICS LETTERS B, 1993, 311 (1-4) : 157 - 162
  • [7] RESIDUAL HEAVY-QUARK AND BOSON INTERACTIONS - THE ROLE OF THE ZB(B)OVER-BAR VERTEX
    GOUNARIS, GJ
    RENARD, FM
    VERZEGNASSI, C
    [J]. PHYSICAL REVIEW D, 1995, 52 (01): : 451 - 458
  • [8] Zb(10610)± and Zb(10650)± as the B*(B)over-bar and B*(B)over-bar* molecular states
    Sun, Zhi-Feng
    He, Jun
    Liu, Xiang
    Luo, Zhi-Gang
    Zhu, Shi-Lin
    [J]. PHYSICAL REVIEW D, 2011, 84 (05):
  • [9] THE CHIRAL LAGRANGIAN APPROACH TO THE NONUNIVERSAL EFFECTS IN THE ZB(B)OVER-BAR VERTEX
    ZHANG, X
    [J]. MODERN PHYSICS LETTERS A, 1994, 9 (21) : 1955 - 1961
  • [10] A DETERMINATION OF THE ZB(B)OVER-BAR VERTEX CORRECTION FROM LEP DATA
    BLONDEL, A
    DJOUADI, A
    VERZEGNASSI, C
    [J]. PHYSICS LETTERS B, 1992, 293 (1-2) : 253 - 258
12345