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Probing the minimal U(1)(X) model at future electron positron colliders via fermion pair-production channels
| Title: | Probing the minimal U(1)(X) model at future electron positron colliders via fermion pair-production channels |
| Authors: | Das, Arindam Browse this author | | Dev, P. S. Bhupal Browse this author | | Hosotani, Yutaka Browse this author →KAKEN DB | | Mandal, Sanjoy Browse this author |
| Issue Date: | 21-Jun-2022 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review D |
| Volume: | 105 |
| Issue: | 11 |
| Start Page: | 115030 |
| Publisher DOI: | 10.1103/PhysRevD.105.115030 |
| Abstract: | The minimal U(1)(X) extension of the Standard Model (SM) is a well-motivated new physics scenario, where anomaly cancellation dictates new neutral gauge boson (Z') couplings with the SM fermions in terms of the U(1)(X) charges of the new scalar fields. We investigate the SM charged fermion pair-production process for different values of these U(1)(X) charges at future e(-)e(+) colliders: e(+)e(-) -> f (f) over bar Apart from the standard gamma and Z-mediated processes, this model features additional s-channel (or both s and t-channel when f = e(-)) Z' exchange which interferes with the SM processes. We first estimate the bounds on the U(1)(X) coupling (g') and the Z' mass (M-Z') considering the latest dilepton and dijet constraints from the heavy resonance searches at the LHC. Then using the allowed values of g', we study the angular distributions, forward-backward (A(FB)), left-right (A(LB)), and left-right forward-backward (A(LR-FB)) asymmetries of the final states. We fmd that these observables can show substantial deviations from the SM results in the U(1)(X) model, thus providing a powerful probe of the multi-TeV Z' bosons at future e(+)e(-) colliders. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86674 |
| Appears in Collections: | 高等教育推進機構 (Institute for the Advancement of Higher Education) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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