School of Physics & Astronomy

# Jianming Bian

PAN 424 (office), 624-7861
bianjm @ physics.umn.edu

My primary research interests are in Intensity Frontier programs. I am working on the NOvA neutrino experiment, liquid argon detector R & D for neutrino experiments and the BESIII electron-positron collider experiment.

NOvA is a long-baseline accelerator-based neutrino oscillation experiment that is optimized for NuE measurements. It uses the upgraded NuMI beam from Fermilab and measures electron-neutrino appearance and muon-neutrino disappearance at its Far Detector in Ash River, Minnesota. The NuE appearance analysis at NOvA aims to resolve the neutrino mass hierarchy problem and to constrain the CP-violating phase. I am playing a leading role in the electron-neutrino appearance measurement at NOvA. Working with students, I have developed the primary electron-neutrino identification algorithm and cosmic ray rejection technique for the NOvA experiment, and observed first neutrino candidates in NOvA's far detector. I also contribute widely in other aspects of the electron neutrino appearance measurement at NOvA. The first measurement of electron-neutrino appearance in NOvA based on its first year’s data was produced in 2015, providing solid evidence of NuE oscillation with the NuMI beam line and some hints on mass-hierarchy and  CP. This result has been reported in various conferences and submitted to Phys. Rev. Lett.

The Liquid Argon Time Projection Chamber (LArTPC) is an exceptionally promising technique for the next generation of neutrino experiments, such as the Deep Underground Neutrino Experiment (DUNE). It offers excellent spatial resolution, high neutrino detection efficiency and superb background rejection. I initiated the liquid argon TPC (LArTPC) R & D efforts at the University of Minnesota. I have also built a purity monitoring system for the CAPTAIN experiment at Los Alamos National Lab. The purity monitor is a miniature TPC which measures lifetime of photoelectrons generated by its UV-illuminated gold photocathode to measure the purity of liquid argon.

I am also deeply involved in the very topical search for exotic-hadron states and other studies of charm and charmonium physics in collider experiments. I have been the lead researcher for several important analyses with the BESIII experiment, including being the primary author of the recent Phys. Rev. Lett (and Editor's suggestion) presenting the discovery of a new four-quark candidate Zc(3900)^0.

More info on NOvA and BESIII can be found at http://www-nova.fnal.gov/ and http://bes3.ihep.ac.cn respectively.

### Selected Publications

Jianming Bian, The CAPTAIN Experiment, DPF2015 proceedings, 2015, arXiv:1509.07739 Fields (DPF2015) proceedings, arXiv:1509.07739 [hep-ex].

P. Adamson, et. al. [The NOvA Collaboration], First measurement of electron-neutrino appearance in NOvA, FERMILAB-PUB-15-262-ND, Submitted to Phys. Rev. Lett

Jianming Bian, First Results of nu_e Appearance Analysis and Electron Neutrino Identification at NOvA, DPF2015 proceeding, arXiv:1510.05708

M.~Ablikim et. al. [BESIII Collaboration], Observation of Zc(3900)^0 in e+e-->pi^0 pi^0 J/psi,, Phys. Rev. Lett. 115, no. 11, 112003 (2015)

Jianming Bian, The NOvA Experiment: Overview and Status, DPF2013, arXiv:1309.7898.

M. Ablikim et al. [BESIII Collaboration], Observation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c, Phys. Rev. Lett. 113, 212002 (2014)

M. Ablikim et al. [BESIII Collaboration], Observation of a Charged Charmoniumlike Structure in e+e−→π+π−J/ψ at s√=4.26  GeV, Phys. Rev. Lett. 110, 252001 (2013)

M. Ablikim et al. [BESIII Collaboration], Study of $\psi(3686)\to\pi^0 h_c, h_c\to\gamma\eta_c$ via $\eta_c$ exclusive decays,, PRD 86, 092009 (2012)

M. Ablikim et al. [BESIII Collaboration] (accepted), Study of J/psi->pp,nn, PRD 86, 032014 (2012)

M. Ablikim et al. [BESIII Collaboration], Measurements of h_c(^1P_1) in psi' Decays, Phys. Rev. Lett. 104, 132002 (2010).

J.M. Bian, Study of h_c(^1P_1) at BESIII, AIP Conf. Proc. 1257, 336 (2010).

M. Ablikim et al. [BESIII Collaboration] (accepted), Two-photon widths of the $χ_{c0, 2}$ states and helicity analysis for $χ_{c2} -> γγ$, PRD, arXiv:1205.4284v1.

J. M. Bian, Absolute energy calibration and the use of time information of BESIII EMC, J. Phys. Conf. Ser. 293, 012047 (2011).

M. Ablikim et al. [BESIII Collaboration], Observation of χ_{c1} decays into vector meson pairs $φφ$, $ωω$, and $ωφ$, Phys. Rev. Lett. 107, 092001 (2011).

M. Ablikim et al. [BESIII Collaboration], Design and Construction of the BESIII Detector, Nucl. Instrum. Meth. A 614, 345 (2010).

L. Yan et al., Lagrange multiplier method used in BESIII kinematic fitting, Chinese Physics C, 34, 204 (2010).

J. M. Bian et al., Absolute Photon Energy Calibration for BESIII EMC, Chinese Physics C, 34, 72 (2010).

J. M. Bian et al., Light hadron physics, Int. J. Mod. Phys. A 24S1, 169 (2009) .

J.M. Bian et al., J/psi inclusive photon spectrum at BESIII, Chin. Phys. Lett. 26, 041302 (2009).

M. He et al., Energy loss correction for a crystal calorimeter, Chinese Physics C, 32, 269 (2008).

G. Qin et al., Particle identification using artificial neural networks at BESIII, Chinese Physics C, 32, 1 (2008).

### Education

Ph.D Physics, 2009, Institute of High Energy Physics, Chinese Academy of Sciences
BS Physics, 2004, Peking University