標題: Probing flavor changing neutral Higgs couplings at LHC
作者: Hou, WS
Lin, GL
Ma, CY
Yuan, CP
電子物理學系
物理研究所
Department of Electrophysics
Institute of Physics
公開日期: 18-九月-1997
摘要: Uniquely heavy with mass at the weak scale, the top quark may have large flavor changing couplings to Higgs bosons that are as yet unexplored. We show that such couplings could be directly probed at the LHC through the parton subprocess c((c) over bar)g --> t((t) over bar)A(0), where the pseudoscalar A(0) subsequently decays into t (c) over bar or (t) over bar c, giving rise to the intriguing final state of like sign top quark pairs. After demanding l(+/-)l(+/-), missing energy and two b-jets, the major background turns out to be q (q) over bar' --> Wt (t) over bar, which can be partially suppressed by jet counting. The signal can then manifest itself in the asymmetry of numbers of l(+)l(+) and l(-)l(-) events. To further improve the signal over background, efficient t vs. (t) over bar tagging methods should be developed. (C) 1997 Elsevier Science B.V.
URI: http://hdl.handle.net/11536/303
ISSN: 0370-2693
期刊: PHYSICS LETTERS B
Volume: 409
Issue: 1-4
起始頁: 344
結束頁: 348
顯示於類別:期刊論文


文件中的檔案:

  1. A1997YA36400051.pdf