Displaced vertex signature of type-I seesaw model

Jana, Sudip; Okada, Nobuchika; Raut, Digesh

doi:10.1103/PhysRevD.98.035023

Title: Displaced vertex signature of type-I seesaw model

Journal Article · 16 August 2018 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.98.035023 · OSTI ID:1464848

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Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Oklahoma State Univ., Stillwater, OK (United States)
Univ. of Alabama, Tuscaloosa, AL (United States)

A certain class of new physics models includes long-lived particles which are singlet under the standard model (SM) gauge group. A displaced vertex is a spectacular signature to probe such particles productions at the high energy colliders, with a negligible SM background. In the context of the minimal gauged B-L extended SM, we consider a pair creation of Majorana right-handed neutrinos (RHNs) at the high energy colliders through the production of the SM and the B-L Higgs bosons and their subsequent decays into RHNs. With parameters reproducing the neutrino oscillation data, we show that the RHNs are long-lived and their displaced vertex signature can be observed at the next generation displaced vertex search experiments, such as the HL-LHC, the MATHUSLA, the LHeC, and the FCC-eh. In conclusion, we find that the lifetime of the RHNs is controlled by the lightest light neutrino mass, which leads to a correlation between the displaced vertex search and the search limit of the future neutrinoless double beta-decay experiments.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359; SC0012447; SC0016013

OSTI ID:: 1464848

Alternate ID(s):: OSTI ID: 1457542

Report Number(s):: arXiv:1804.06828; OSU-HEP-18-02; FERMILAB-PUB-18-176-T; PRVDAQ; 1668882; TRN: US1901386

Journal Information:: Physical Review D, Vol. 98, Issue 3; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 21 works

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