Full analysis of general non-standard tbW couplings

Physics Letters B

Kazumasa Ohkuma¹  Zenrō Hioki² 

[1] Department of Information and Computer Engineering, Okayama University of Science, Okayama 700-0005, Japan;Institute of Theoretical Physics, University of Tokushima, Tokushima 770-8502, Japan;

关键词: Top decay;    Anomalous top couplings;    Effective-Lagrangian approach;   

DOI  :  10.1016/j.physletb.2015.11.029

来源: DOAJ

【 摘 要 】

Possible non-standard couplings which could contribute to the t→bW process are studied based on the effective-Lagrangian approach. The corresponding effective Lagrangian consists of four kinds of dimension-6 effective operators, each of which has an independent coupling constant. In this analysis, all those couplings are treated as complex numbers and constraints on them are estimated by using recent experimental data from the LHC. We point out that the resultant constraints on those couplings are still not that strong because contributions from some couplings can work oppositely with each other.

【 授权许可】

Unknown