Probing top flavour-changing neutral scalar couplings at the CERN LHC

被引：109
作者：
Aguilar-Saavedra, JA [1 ]
Branco, GC
机构：
[1] Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain
[2] Inst Super Tecn, Dept Fis, P-1096 Lisbon, Portugal
[3] Inst Super Tecn, CFIF, P-1096 Lisbon, Portugal
来源：
PHYSICS LETTERS B | 2000年 / 495卷 / 3-4期
关键词：
D O I：
10.1016/S0370-2693(00)01259-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Top decays into a light Higgs boson and an up or charm quark can reach detectable levels in Standard Model extensions with two Higgs doublers or with new exotic quarks, and in the Minimal Supersymmetric Standard Model. Using both a standard and a neural network analysis we show that the CERN Large Hadron Collider will give 3 sigma evidence of decays with Br(t --> Hc) greater than or equal to 6.5 x 10(-5) or set a limit Br(t --> Hc) less than or equal to 4.5 x 10(-5) with a 95% confidence level if these decays are not observed. We also consider limits obtained from single top production associated with a neutral Higgs boson. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：347 / 356
页数：10
相关论文
共 42 条
  • [1] Measurement of Rb using a vertex mass tag
    Abe, K
    Abe, K
    Akagi, T
    Allen, NJ
    Ash, WW
    Aston, D
    Baird, KG
    Baltay, C
    Band, HR
    Barakat, MB
    Baranko, G
    Bardon, O
    Barklow, TL
    Bashindzhagyan, GL
    Bazarko, AO
    Ben-David, R
    Benvenuti, AC
    Bilei, GM
    Bisello, D
    Blaylock, G
    Bogart, JR
    Bolen, B
    Bolton, T
    Bower, GR
    Brau, JE
    Breidenbach, M
    Bugg, WM
    Burke, D
    Burnett, TH
    Burrows, PN
    Busza, W
    Calcaterra, A
    Caldwell, DO
    Calloway, D
    Camanzi, B
    Carpinelli, M
    Cassell, R
    Castaldi, R
    Castro, A
    Cavalli-Sforza, M
    Chou, A
    Church, E
    Cohn, HO
    Coller, JA
    Cook, V
    Cotton, R
    Cowan, RF
    Coyne, DG
    Crawford, G
    D'Oliveira, A
    [J]. PHYSICAL REVIEW LETTERS, 1998, 80 (04) : 660 - 665
  • [2] Computation of confidence intervals for Poisson processes
    Aguilar-Saavedra, JA
    [J]. COMPUTER PHYSICS COMMUNICATIONS, 2000, 130 (1-2) : 190 - 203
  • [3] FLAVOR-CHANGING NEUTRAL SCALAR CURRENTS AT MU(+)MU(-) COLLIDERS
    ATWOOD, D
    REINA, L
    SONI, A
    [J]. PHYSICAL REVIEW LETTERS, 1995, 75 (21) : 3800 - 3803
  • [4] Probing the flavor-changing tc vertex via tree-level processes: e(+)e(-)->t(c)over-bar-v(e)(v)over-bar-(e), t(c)over-bar-e(+)e(-), and t->cW(+)W(-)
    BarShalom, S
    Eilam, G
    Soni, A
    Wudka, J
    [J]. PHYSICAL REVIEW LETTERS, 1997, 79 (07) : 1217 - 1220
  • [5] QCD CORRECTIONS TO HEAVY QUARK PRODUCTION IN HADRON HADRON-COLLISIONS
    BEENAKKER, W
    VANNEERVEN, WL
    MENG, R
    SCHULER, GA
    SMITH, J
    [J]. NUCLEAR PHYSICS B, 1991, 351 (03) : 507 - 560
  • [6] BENEKE M, WORKSH STAND MOD PHY
  • [7] ON THE PRODUCTION OF A W AND JETS AT HADRON COLLIDERS
    BERENDS, FA
    KUIJF, H
    TAUSK, B
    GIELE, WT
    [J]. NUCLEAR PHYSICS B, 1991, 357 (01) : 32 - 64
  • [8] ON THE ASSOCIATE PRODUCTION OF A NEUTRAL INTERMEDIATE-MASS HIGGS BOSON WITH A SINGLE TOP QUARK AT THE LHC AND SSC
    BORDES, G
    VANEIJK, B
    [J]. PHYSICS LETTERS B, 1993, 299 (3-4) : 315 - 320
  • [9] Scalars from top-condensation models at Hadron Colliders
    Burdman, G
    [J]. PHYSICAL REVIEW LETTERS, 1999, 83 (15) : 2888 - 2891
  • [10] Effective potential methods and the Higgs mass spectrum in the MSSM
    Carena, M
    Quiros, M
    Wagner, CEM
    [J]. NUCLEAR PHYSICS B, 1996, 461 (03) : 407 - 436
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