Julius Johnson

Faculty

Julius Johnson Headshot

Julius Johnson

1 212 992 9440

433 FIRST AVENUE
NEW YORK, NY 10010
United States

Julius Johnson joined NYU Rory Meyers College of Nursing in 2023 as a clinical associate professor in the undergraduate and graduate programs. Johnson has a DNP from the University of Miami (2016), an MS in Family Health from Binghamton University (2009), and a BS with a major in nursing degree from Binghamton University (2005). He has been a board-certified Family Nurse Practitioner for 14 years specializing in home-based primary care, transitional care (reducing 30-day rehospitalization rates), and translational community improvement projects. Johnson is passionate about improving the overall health of underserved communities, men’s health, and opioid overdose prevention.

He is the immediate past president of the Greater NYC Black Nurses Association, the chapter’s founding 1st vice president, and currently sits on the national board of directors for the National Black Nurses Association. He is also the co-chair of the National Black Nurses Association’s scholarship committee. He currently serves as the clinical director of the GNYC Black Nurses Association’s Opioid Overdose Prevention Program. He is the founding president of the Omega Nu chapter of Sigma Theta Tau International Honor Society at LIU-Brooklyn. Johnson has received several awards including NBNA’s 40 under 40 award (2018), NBNA’s Trailblazer of the Year award (2021), and led the GNYC-BNA to best community service programming chapter (2021). Johnson was inducted as a fellow in the American Association of Nurse Practitioners (2022).

DNP - University of Miami (2016)
MS - Binghamton University (2009)
BS - Binghamton University (2005)

Adult health
Community/population health
Primary care

American Association of Nurse Practitioners
American Nurses Association
National Black Nurses Association (Greater NYC chapter)
Sigma Theta Tau International Honor Society, Beta Tau chapter, Omega Nu chapter

Fellow, American Association of Nurse Practitioners (2022)
Community leader of the year, Pi Phi Omega chapter of Alpha Kappa Alpha (2022)
City of New York Certificate of Recognition (2022)
Trailblazer award, National Black Nurses Association (2021)
Certificate of Leadership, Schwartz College of Pharmacy at LIU-Brooklyn (2019)
40 under 40 award, National Black Nurses Association (2018)
Decker School of Nursing Community Serviceman of the year award (2005)
Mary E. Mahoney Leadership and Service award (2005)

Search for neutral long-lived particles that decay into displaced jets in the ATLAS calorimeter in association with leptons or jets using pp collisions at s = 13 TeV

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Abstract
Abstract
A search for neutral long-lived particles (LLPs) decaying in the ATLAS hadronic calorimeter using 140 fb−1 of proton-proton collisions at s = 13 TeV delivered by the LHC is presented. The analysis is composed of three channels. The first targets pair-produced LLPs, where at least one LLP is produced with sufficiently low boost that its decay products can be resolved as separate jets. The second and third channels target LLPs respectively produced in association with a W or Z boson that decays leptonically. In each channel, different search regions target different kinematic regimes, to cover a broad range of LLP mass hypotheses and models. No excesses of events relative to the background predictions are observed. Higgs boson branching fractions to pairs of hadronically decaying neutral LLPs larger than 1% are excluded at 95% confidence level for proper decay lengths in the range of 30 cm to 4.5 m depending on the LLP mass, a factor of three improvement on previous searches in the hadronic calorimeter. The production of long-lived dark photons in association with a Z boson with cross-sections above 0.1 pb is excluded for dark photon mean proper decay lengths in the range of 20 cm to 50 m, improving previous ATLAS results by an order of magnitude. Finally, long-lived photo-phobic axion-like particle models are probed for the first time by ATLAS, with production cross-sections above 0.1 pb excluded in the 0.1 mm to 10 m range.

Search for non-resonant Higgs boson pair production in final states with leptons, taus, and photons in pp collisions at √s = 13 TeV with the ATLAS detector

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Abstract
Abstract
A search is presented for non-resonant Higgs boson pair production, targeting the bbZZ, 4V (V = W or Z), VVττ, 4τ, γγVV and γγττ decay channels. Events are categorised based on the multiplicity of light charged leptons (electrons or muons), hadronically decaying tau leptons, and photons. The search is based on a data sample of proton-proton collisions at s = 13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb−1. No evidence of the signal is found and the observed (expected) upper limit on the cross-section for non-resonant Higgs boson pair production is determined to be 17 (11) times the Standard Model predicted cross-section at 95% confidence level under the background-only hypothesis. The observed (expected) constraints on the HHH coupling modifier, κλ, are determined to be −6.2 < κλ< 11.6 (−4.5 < κλ< 9.6) at 95% confidence level, assuming the Standard Model for the expected limits and that new physics would only affect κλ.

Search for pair production of boosted Higgs bosons via vector-boson fusion in the bb¯bb¯ final state using pp collisions at s=13TeV with the ATLAS detector

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Abstract
Abstract
A search for Higgs boson pair production via vector-boson fusion is performed in the Lorentz-boosted regime, where a Higgs boson candidate is reconstructed as a single large-radius jet, using 140 fb−1 of proton–proton collision data at s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider. Only Higgs boson decays into bottom quark pairs are considered. The search is particularly sensitive to the quartic coupling between two vector bosons and two Higgs bosons relative to its Standard Model prediction, κ2V. This study constrains κ2V to 0.55<κ2V<1.49 at the 95% confidence level. The value κ2V=0 is excluded with a significance of 3.8 standard deviations with other Higgs boson couplings fixed to their Standard Model values. A search for new heavy spin-0 resonances that would mediate Higgs boson pair production via vector-boson fusion is carried out in the mass range of 1–5 TeV for the first time under several model and decay-width assumptions. No significant deviation from the Standard Model hypothesis is observed and exclusion limits at the 95% confidence level are derived.

Search for pair-produced vectorlike quarks coupling to light quarks in the lepton plus jets final state using 13 TeV pp collisions with the ATLAS detector

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Abstract
A search is presented for the pair production of heavy vectorlike quarks (VLQs) that each decay into a W boson and a light quark. This study focuses on events where one W boson decays into leptons and the other into hadrons. The search analyzed 140 fb−1 of pp collision data with pffiffi s ¼ 13 TeV, recorded by the ATLAS detector from 2015 to 2018 during run 2 of the Large Hadron Collider. The final state is characterized by a high-transverse-momentum isolated electron or muon, large missing transverse momentum, multiple small-radius jets, and a single large-radius jet identified as originating from the hadronic decay of a boosted W boson. With higher center-of-mass energy and integrated luminosity than in the run 1 search, and improved analysis tools, this analysis excludes VLQs (Q) with masses below 1530 GeV at 95% confidence level for the branching ratio BðQ → WqÞ ¼ 1, an improvement of 840 GeV on the previous ATLAS limit.

Simultaneous Unbinned Differential Cross-Section Measurement of Twenty-Four (Formula presented) Kinematic Observables with the ATLAS Detector

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Abstract
(Formula presented) boson events at the Large Hadron Collider can be selected with high purity and are sensitive to a diverse range of QCD phenomena. As a result, these events are often used to probe the nature of the strong force, improve Monte Carlo event generators, and search for deviations from standard model predictions. All previous measurements of (Formula presented) boson production characterize the event properties using a small number of observables and present the results as differential cross sections in predetermined bins. In this analysis, a machine learning method called omnifold is used to produce a simultaneous measurement of twenty-four (Formula presented) observables using (Formula presented) of proton-proton collisions at (Formula presented) collected with the ATLAS detector. Unlike any previous fiducial differential cross-section measurement, this result is presented unbinned as a dataset of particle-level events, allowing for flexible reuse in a variety of contexts and for new observables to be constructed from the twenty-four measured observables.