Hesari, Hoda and Khanpour, Hamzeh and Najafabadi, Mojtaba Mohammadi
(2015)
Direct and indirect searches for top-Higgs FCNC coupling.
Physical Review D, 92 (113012).
ISSN 2470-0029
Abstract
Large top-quark flavor changing through neutral currents is expected by many extensions of the standard model. Direct and indirect searches for flavor-changing neutral currents (FCNC) in the top-quark decays to an up-type quark (up, charm) and a Higgs boson are presented. We probe the observability of the top-Higgs FCNC couplings through the process
e−e+→t(→ℓνℓb)¯t(→qH), where ℓ=e, μ and q reflects up and charm quarks. It is shown that the branching ratio
Br (t→qH) can be probed down to 1.12×10
−3 at 95% C.L. at the center-of-mass energy of 500 GeV with an integrated luminosity of
3000fb −1. We also update the constraint on the top-Higgs FCNC coupling using the electroweak precision observables related to Z→c¯c decay.
Item Type: |
Article
|
Additional Information: |
Cite as: Hesari, H. et al. “Direct and Indirect Searches for Top-Higgs FCNC Couplings.” Physical Review D 92 (2015): 113012. |
Keywords: |
Direct searches; indirect searches; top-Higgs FCNC coupling; |
Academic Unit: |
Faculty of Science and Engineering > Theoretical Physics |
Item ID: |
14758 |
Identification Number: |
https://doi.org/10.1103/PhysRevD.92.113012 |
Depositing User: |
Hamzeh Khanpour
|
Date Deposited: |
06 Sep 2021 16:48 |
Journal or Publication Title: |
Physical Review D |
Publisher: |
American Physical Society |
Refereed: |
No |
Funders: |
School of Particles and Accelerators, Institute for Research in Fundamental Sciences (IPM) |
URI: |
|
Use Licence: |
This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available
here |
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