Measuring sparticle masses in non-universal string inspired models at the LHC

被引:193
作者
Allanach, BC
Lester, CG
Parker, MA
Webber, BR
机构
[1] Univ Cambridge, DAMTP, Cambridge CB3 0WA, England
[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2000年 / 09期
关键词
supersymmetry breaking; beyond standard model; supersymmetric standard model; hadronic colliders;
D O I
10.1088/1126-6708/2000/09/004
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We demonstrate that some of the suggested five supergravity points for study at the LHC could be approximately derived from perturbative string theories or M-theory, but that charge and colour breaking minima would result. As a pilot study, we then analyse a perturbative string model with non-universal soft masses that are optimised in order to avoid global charge and colour breaking minima. By combining measurements of up to six kinematic edges from squark decay chains with data from a new kinematic variable, designed to improve slepton mass measurements, we demonstrate that a typical LHC experiment will be able to determine squark, slepton and neutralino masses with an accuracy sufficient to permit an optimised model to be distinguished from a similar standard SUGRA point. The technique thus generalizes SUSY searches at the LHC.
引用
收藏
页码:XIII / 30
页数:31
相关论文
共 30 条
  • [11] Four-dimensional effective supergravity and soft terms in M theory
    Choi, K
    Kim, HB
    Munoz, C
    [J]. PHYSICAL REVIEW D, 1998, 57 (12): : 7521 - 7528
  • [12] CIAPETTI G, 1990, CERN9010, V2, P155
  • [13] CORCELLA G, HEPPH9912396, P22
  • [14] Dedes A, 2000, PHYS REV D, V62, DOI 10.1103/PhysRevD.62.016010
  • [15] Radiative electroweak symmetry breaking in the minimal supersymmetric standard model and low energy thresholds
    Dedes, A
    Lahanas, AB
    Tamvakis, K
    [J]. PHYSICAL REVIEW D, 1996, 53 (07) : 3793 - 3807
  • [16] GIANOTTI F, 1997, PHYSNO110
  • [17] THE SEARCH FOR SUPERSYMMETRY - PROBING PHYSICS BEYOND THE STANDARD MODEL
    HABER, HE
    KANE, GL
    [J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1985, 117 (2-4): : 75 - 263
  • [18] HINCHLIFFE I, 1997, ATLASNOTEPHYS109
  • [19] Heterotic and Type I string dynamics from eleven dimensions
    Horava, P
    Witten, E
    [J]. NUCLEAR PHYSICS B, 1996, 460 (03) : 506 - 524
  • [20] Non-standard soft supersymmetry breaking
    Jack, I
    Jones, DRT
    [J]. PHYSICS LETTERS B, 1999, 457 (1-3) : 101 - 108