I am a high energy particle physics experimentalist at Fermilab.  I am interested in understanding the basic building blocks of the universe using particle accelerators to smash particles together and study these collisions in the laboratory.  I am a member of the CMS experiment at the CERN LHC and was extremely fortunate to be a part of the Higgs discovery.  My most recent activities involve study of the Higgs boson, searches for phenomena beyond the Standard Model of particle physics, and understanding nature of dark matter.  

Nhan Tran

Selected Research Interests

Search for light (MeV-GeV scale) dark matter at the LDMX experiment; development of hadronic veto system

Search for exotic hidden hadronic and diboson resonances at CMS

Study of the Higgs boson properties via spin correlations and at very high momentum at CMS

Development of fast electronics algorithms and hardware for LHC Phase-2 trigger applications 

Development of jet substructure and pileup mitigation reconstruction techniques at the LHC


PhD., Physics, 2011

PhD., Physics, 2011

PhD., Physics, 2011

Johns Hopkins University

[Dissertation] Angles and Daemons: Spin Correlations at the LHC

B.S., Physics, 2005

Princeton University
Professional Experience
Professional Experience

Wilson Fellow

Wilson Fellow, 2017

Fermi National Accelerator Laboratory

Postdoctoral Researcher, 2011

Fermi National Accelerator Laboratory

Graduate Research Assistant, 2006

Johns Hopkins University
Selected Talks
Selected Talks

Boosting hidden light new physics at the LHC and Beyond

Fermilab Users Meeting, 2017

A dijet renaissance and the light dark matter connection

Texas A&M, University of Maryland, Rutgers University, 2017

Searches for diboson resonances at CMS

Brookhaven Forum, 2015 

Experimental Summary

Boost Conference, 2014

The Evolution of Jets at the LHC: jets, subjets, particles

Fermilab Wine And Cheese Seminar, 2014

Pileup per particle identification

Mitigation Pileup Workshop, CERN, 2014

Jet Structure at Hadron Colliders

Lepton Photon Conference, 2013

Spin determination of single-produced resonances at the LHC

ICHEP conference, 2010

Selected Publications

CMS Collaboration, ”Inclusive search for the standard model Higgs boson produced in pp colli- sions at sqrt(s) = 13 TeV using H → bb

decays”, CMS HIG-17-010 (2017).

CMS Collaboration, ”Search for light vector resonances decaying to a quark pair produced in association with a jet in proton-proton collisions at sqrt(s) = 13 TeV”, CMS EXO-17-001 (2017).

CMS Collaboration, ”Search for low mass vector resonances decaying to quark-antiquark pairs in proton-proton collisions at sqrt(s) = 13 TeV”, submitted to PRL (2016), [arXiv:1705.10532 [hep-ph]]. 

Timothy Cohen, Matthew J. Dolan, Sonia El Hedri, James Hirschauer, Nhan Tran, Andrew Whit- beck. ”Dissecting Jets and Missing Energy Searches Using n-body Extended Simplified Models”, JHEP 08 (2016) 038 [arXiv:1602.04305 [hep-ph]].


James Dolen, Philip Harris, Simone Marzani, Salvatore Rappoccio, Nhan Tran. ”Thinking outside the ROCs: Designing Decorrelated Taggers (DDT) for jet substructure”. JHEP 05 (2016) 156 [arXiv:1504.00679 [hep-ph]]. 

T. Liu, G. Deptuch, J. Hoff, S. Jindariani, S. Joshi, J. Olsen, N. Tran and M. Trimpl, ”Design and testing of the first 2D Prototype Vertically Integrated Pattern Recognition Associative Memory,” JINST 10, 02, C02029 (2015). 

CMS Collaboration, ”Search for a Higgs Boson in the Mass Range from 145 to 1000 GeV Decaying to a Pair of W or Z Bosons”, JHEP 10 (2015) 144 [arXiv:1504.00936 [hep-ex]]. 

CMS Collaboration, “Identification techniques for highly boosted W bosons that decay into hadrons”, JHEP 12 (2014) 017 [arXiv:1410.4227 [hep-ex]]. 

D. Bertolini, M. Low, P. Harris, N. Tran, ”Pileup Per Particle Identification”, JHEP 10 (2014) 059 [arXiv:1407.6013 [hep-ph]]. 

S. Bolognesi et al., ”On the spin and parity of a single-produced resonance at the LHC,” Phys. Rev. D86, 095031 (2012) [arXiv:1208.4018 [hep-ph]].

CMS Collaboration, ”Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs,” Phys. Rev. Lett. 110 (2013) 081803 [arXiv:1212.6639 [hep-ex]].

CMS Collaboration, ”Observation of a new boson at a mass of 125 GeV with the CMS experiment

at the LHC”, Phys. Lett. B 716 (2012) 30 [arXiv:1207.7235 [hep-ex]]. 

Y. Gao et al., ”Spin determination of single-produced resonances at hadron colliders”, Phys. Rev. D. 81, 075022 (2010) [arXiv:1001.3396 [hep-ph]]. 

CMS Collaboration, ”Measurement of the weak mixing angle with the Drell-Yan process in proton- proton collisions at the LHC”, Phys. Rev. D 84, 112002 (2011) [arXiv:1110.2682 [hep-ex]]. 

Awards and Grants

Universities Research Association Tollestrup Award, 2017

Fermilab Reward & Recognition Award, 2015

LHC Physics Center (LPC) Distinguished Researcher, 2014

Universities Research Association Visiting Scholar, 2009

National Science Foundation (NSF) USLHC Graduate Student Support Award, 2009