Yoshikazu Nagai

Yoshikazu Nagai

assistant professor

PhD (University of Tsukuba, Japan, 2010)

Department of Atomic Physics

Room(s): Lágymányos Campus, Northern Building 3.140
Phone(s): +36-1-411-6500
Extension(s): +36-1-372-2500 / 6309
Homepage: yoshikazunagaihep.wordpress.com
Email: hc.nrec@iagan.uzakihsoy ,uh.etle.ktt@iagan.uzakihsoy


Research interest:
My current and near future research interests are measurement of Charge-Parity (CP) violation in the lepton sector and measurement of neutrino interactions. The Tokai-to-Kamioka experiment (T2K, an accelerator-based neutrino oscillation experiment) in Japan has addressed these topics, such as constraint on the CP violation parameter space in the lepton sector and various cross section measurements utilizing its multi-purpose near detector, ND280. Clearly, further studies are necessary to measure the size of the CP violation phase and to improve precision of neutrino interaction measurements. Current and next-generation accelerator-based neutrino experiments will give us great opportunities to address these questions, and my research focuses on T2K and the future Deep Underground Neutrino Experiment experiment (DUNE, will be hosted by Fermilab in the US).

One of the largest limiting factors in any neutrino oscillation analysis comes from uncertainty on the neutrino interaction cross sections. Neutrino cross section measurements have in turn been limited by large uncertainty on the neutrino flux prediction which predominantly comes from hadron production. Under my research project, hadron production measurements will be conducted in collaboration with the NA61/SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) at the CERN SPS collider. NA61/SHINE results will be applied to T2K's and future DUNE's beam flux prediction.

2007-2010: Ph.D in physics, University of Tsukuba, Japan
2005-2007: M.S. in physics, University of Tsukuba, Japan
2001-2005: B.A. in physics, International Christian University, Japan

Academic Appointments:
2020-present: Assistant Professor, Eötvös Loránd University, Budapest, Hungary
2014-2020: Research Associate, University of Colorado Boulder, USA
2011-2014: Postdoctoral Fellow, CPPM, Aix-Marseille University, France
2009-2011: JSPS Research Fellowship, University of Tsukuba, Japan
2007-2009: Research Assistant, University of Tsukuba, Japan
2005-2007: Teaching Assistant, University of Tsukuba, Japan

(CPPM: Le Centre de physique des particules de Marseille)
(JSPS: Japan Society for the Promotion of Science)

2021-2023: The Ulam Programme (declined)
2012-2013: Allocation ville de Marseille
2009-2011: JSPS Research fellowship for young scientists

International Collaboration:
under discussion: The DUNE experiment at Fermilab
2017-present: The T2K experiment at J-PARC
2015-present: The NA61/SHINE experiment at CERN
2007-2011: The CDF experiment at Fermilab
2005-2007, 2011-2015: The ATLAS experiment at CERN

Leadership & Professional Service:
2020-present: Guest editor of the special issue (Neutrino Physics) of a scientific journal “Universe”
2020-present: Coordinator of low-E (1-20 GeV) beamline upgrade studies (NA61/SHINE and T2K)
2019-present: Convener of the beam Monte Carlo simulation group (T2K)
2019-2020: Paper committee member (T2K)
2017-present: Convener of the general software group (NA61/SHINE)
2017-present: APS journal referee (Phys. Rev. Lett, Phys. Rev. D)
2017-present: Deputy software board member (NA61/SHINE)
2017-present: Paper editorial board member (NA61/SHINE)
2017-2018: Expert of the forward TPC detectors (NA61/SHINE)
July 2017: Organizer of the software upgrade workshop (NA61/SHINE)
July 2017: Session chair of an international workshop "NA61/SHINE Beyond 2020"
2016-present: Convener of the event reconstruction group (NA61/SHINE)
2016-2018: Run coordinator (NA61/SHINE)
2015-present: Convener of the Monte Carlo simulation group (NA61/SHINE)
2013-2014: Production manager of Monte Carlo simulation samples (ATLAS)
2011-2013: Software librarian of b-tagging algorithm (ATLAS)
2007-2009: Expert of the DAQ system (CDF)

Links to associated scientific database profiles:

Selected publications of recent years:

  1. “Constraint on the Matter-Antimatter Symmetry-Violating Phase in Neutrino Oscillations”, K. Abe, et al., [T2K Collaboration], Nature 580, 339-344 (2020).
  2. “The Forward TPC system of the NA61/SHINE experiment at CERN: a tandem TPC concept”, B. Rumberger, et al., JINST 15, P07013 (2020)
  3. “Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND280”, K. Abe, et al., [T2K Collaboration], JHEP 2020, 114 (2020)
  4. "Search for heavy neutrinos with the T2K near detector ND280", K. Abe, et al., [T2K Collaboration], Phys. Rev. D 100, no.5, 052006 (2019)
  5. “Measurements of production and inelastic cross sections for p+C, p+Be, and p+Al at 60 GeV/c and p+C and p+Be at 120 GeV/c”, A. Aduszkiewicz, et al., [NA61/SHINE Collaboration], Phys. Rev. D 100, no. 11, 112001 (2019)
  6. “Measurements of hadron production in π+ + C and π+ + Be interactions at 60 GeV/c”, A. Aduszkiewicz, et al., [NA61/SHINE Collaboration], Phys. Rev. D 100, 112004 (2019)
  7. “Measurements of π+/-, K+/- and proton double differential yields from the surface of the T2K replica target for incoming 31 GeV/c protons with the NA61/SHINE spectrometer at the CERN SPS”, N. Abgrall, et al., [NA61/SHINE Collaboration], Eur. Phys. J. C 79, no. 2, 100 (2019)
  8. “Search for CP violation in Neutrino and Antineutrino Oscillations by the T2K experiment with 2.2 x 10^21 protons on target”, K. Abe, et al., [T2K Collaboration], Phys. Rev. Lett. 121, 171802 (2018)
  9. “Measurements of Total Production Cross Sections for π++C, π++Al, K++C, and K++Al at 60 GeV/c and π++C and π++Al at 31 GeV/c”, A. Aduszkiewicz, et al., [NA61/SHINE Collaboration], Phys. Rev. D 98, 052001 (2018)
  10. “Measurements of Differential Yields from the Surface of the T2K Replica Target for Incoming 31 GeV/c Protons with the NA61/SHINE Spectrometer at the CERN SPS”, N. Abgrall, et al., [NA61/SHINE Collaboration], Eur. Phys. J. C 76, no. 11, 617 (2016)