Displaced fat-jets and tracks to probe boosted right-handed neutrinos in the $U(1)_{B-L}$ model

Rojalin Padhan; Manimala Mitra; Suchita Kulkarni; Frank F. Deppisch

doi:10.1140/epjc/s10052-022-10819-7

paper

Displaced fat-jets and tracks to probe boosted right-handed neutrinos in the $U (1)_{B - L}$ model

arXiv:2203.06114 · doi:10.1140/epjc/s10052-022-10819-7

Abstract

We investigate the pair-production of Right-Handed Neutrinos (RHNs) via a $B - L$ $Z^{'}$ boson and the detection prospects at the High-Luminosity run of the LHC (HL-LHC) and a future $pp$ collider (FCC-hh). We focus on RHN states with a mass of $10 - 70$ GeV which naturally results in displaced vertices for small active-sterile mixing strengths. Being produced through a mass resonance with $m_{Z^{'}} \geq 1$ TeV, the RHNs are heavily boosted, leading to collimated decay products that give rise to fat-jets. We investigate the detection prospect of dedicated signatures in the inner detector and the muon spectrometer, namely a pair of displaced fat-jets and the associated tracks, respectively. We find that both the HL-LHC and FCC-hh can be sensitive to small active-sterile mixing $V_{μ N} > 1 0^{- 6}$ and $V_{μ N} > 1 0^{- 7}$ with the number of events reaching $O (10)$ and $O (1 0^{3})$ , respectively. This allows probing the generation of light neutrino masses through the Seesaw mechanism in this scenario.

29 pages, 17 figures, Contribution to Snowmass 2021

Displaced fat-jets and tracks to probe boosted right-handed neutrinos in the U(1)B−L​ model

Abstract

References in corpus (12)

Displaced fat-jets and tracks to probe boosted right-handed neutrinos in the $U (1)_{B - L}$ model