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Revisiting the LHC reach in the displaced region of the minimal left-right symmetric model
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abstract
We revisit discovery prospects for a long-lived sterile neutrino $N$ at the Large Hadron Collider (LHC) in the context of left-right symmetric theories. We focus on a displaced vertex search strategy sensitive to $\mathcal{O}$(GeV) neutrino masses produced via a right-handed $W_{R}$ boson. Both on-shell and off-shell Drell-Yan production of $W_{R}$ are considered. We estimate the reach as a function of $m_{N}$ and $m_{W_{R}}$. With $\sqrt{s}=13$ TeV and 300/fb of integrated luminosity, the LHC can probe neutrino masses as high as $\sim 30$ GeV and $m_{W_{R}}$ around 6 TeV. The reach goes up to 11.5 TeV with 3000/fb and $m_{N}\sim 45$ GeV. This represents an improvement of a factor of 2 in sensitivity with respect to earlier work.
Forward citations
Cited by 3 Pith papers
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Probing light neutralinos from pair-produced sleptons with displaced vertices at the high-luminosity LHC
A displaced-vertex search for slepton pair production at the HL-LHC can probe RPV coupling lambda-prime-111 down to about 1e-7 and neutralino masses up to roughly 1 TeV, far beyond single-slepton production.
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Heavy neutrino mixing prospects at hadron colliders: a machine learning study
XGBoost applied to simulated same-sign and opposite-sign dilepton events from WR decays in the inverse seesaw left-right model gives projected heavy neutrino mass reaches up to 17.1 and 19.5 TeV at a 100 TeV collider.
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Displaced heavy neutrinos from $Z'$ decays at the LHC
Displaced vertex searches at the HL-LHC could probe heavy neutrino mixings down to |V_lN|^2 ~ 10^-17 for Z'-produced neutrinos in U(1)_X and U(1)_{B-L} models.
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