Sensitivity analysis of singlet vector-like B quarks via photon-induced and Z-initiated processes at FCC- μp
Eda Alici
article (Uluslararası, Hakemli) | Yazar(lar): Eda Alici | Yıl: 2026 | Dergi/Kurum: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | İndeks: WOS.SCI | DOI: 10.1088/1361-6471/aeaaf7 | Anahtar Kelimeler: VLQ, Photon-induced production, Z-initiated production, FCC-mu p, BSM physics — Özet: This study presents a systemat
This study presents a systematic sensitivity analysis of singlet-type vector-like B quark production at an FCC- mu p collider with a centre-of-mass energy of s=24.5 TeV through photon- and Z-initiated production mechanisms. The analysis focuses on the B -> Zb decay channel, considering the leptonic decay of the Z boson and the hadronic decay of the accompanying W boson, leading to the final state & ell;+& ell;-bjj. Detector-resolution effects are incorporated through a simplified Gaussian smearing procedure, and the discovery and exclusion sensitivities are evaluated using an Asimov-based statistical framework. For the photon-induced channel, the most favourable sensitivity is obtained for RL=0.05 and L=1000 fb-1. Over the mass range MB=2- 3 TeV, the expected 5 sigma discovery reach is approximately g & lowast;similar or equal to 0.263- 0.328, while the 95% C.L. exclusion sensitivity extends to g & lowast;similar or equal to 0.162- 0.197. On the other hand, the Z-initiated channel provides a substantially stronger sensitivity and extends the investigated mass range up to MB=4.5 TeV. For RL=0.05 and L=500 fb-1, the 5 sigma discovery reach is approximately g & lowast;similar or equal to 0.038- 0.056, while the corresponding 95% C.L. exclusion sensitivity reaches g & lowast;similar or equal to 0.021- 0.032. These results demonstrate that photon- and Z-initiated single production at an FCC- mu p collider provide complementary probes of heavy vector-like B quarks. Moreover, the Z-initiated channel offers particularly strong sensitivity to small effective couplings in the multi-TeV mass region beyond the present direct LHC reach.