標題: | Flavor-changing neutral Higgs boson couplings and top-quark-charm-quark production at the Next Linear Collider |
作者: | Hou, WS Lin, GL Ma, CY 電子物理學系 物理研究所 Department of Electrophysics Institute of Physics |
公開日期: | 1-十二月-1997 |
摘要: | We explore the possibility of detecting flavor-changing neutral Higgs boson couplings at the Next Linear Collider (NLC) through e(+)e(-)->nu(e)<(nu)over bar>(e)t (c) over bar. In the framework of a general two-Higgs-doublet model, we perform a complete calculation and find that sigma(e(+)e(-)-->nu(e) nu(e)t (c) over bar nu(e)<(nu)over bar>(e) (t) over bar c) could reach similar to 9 fb for root s=2 TeV. This amounts to an annual production of 500 t (c) over bar plus (t) over bar c pairs at the NLC with an integrated luminosity of 50 fb(-1). The dependence of the tc-production rate on the neutral scalar mixing angle is mild except when sin(2) alpha-->0 or 1. The nu nu W+W- background should be manageable after b tagging, while vvt (t) over bar background should not be a problem when the signal event rate is still interesting. The process, together with e(+)e(-)-->nu(e)<(nu(e))over bar>W+W-,nu(e)<(nu(e))over bar>ZZ studies, offer the chance of measuring the t-c-Higgs-bsson coupling. |
URI: | http://dx.doi.org/10.1103/PhysRevD.56.7434 http://hdl.handle.net/11536/149693 |
ISSN: | 0556-2821 |
DOI: | 10.1103/PhysRevD.56.7434 |
期刊: | PHYSICAL REVIEW D |
Volume: | 56 |
Issue: | 11 |
起始頁: | 7434 |
結束頁: | 7443 |
顯示於類別: | 期刊論文 |