Xuefeng DING (丁雪峰)
xuefengd@princeton.edu • https://github.com/DingXuefeng • 42 papers 2270 citations
EDUCATION
2019 PhD in Physics, International School for Advanced Studies, Trieste Italy (Cum Laude)
2015 MS in Physics, Wuhan University, Wuhan China
2012 BS in Physics, Wuhan University, Wuhan China
RESEARCH EXPERIENCE
Postdoc associate | Princeton University (Princeton, USA) (2019 May — present)
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Core data analyst in the Evidence of CN-cycle of proton fusion in the Sun, 2020 (587) Nature cover.
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The project is awarded Giuseppe and Vanna Cocconi Prize by the European Physics Society.
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I developed the BAMBI model which corrects instability before hardware reaching full stable condition.
Improved sensitivity of Borexino to CNO solar neutrinos from 2 σ to 5 σ.
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Coordinator of evaluation of statistical sensitivity of Borexino to CNO neutrinos.
Visiting researcher | National Laboratory of Gran Sasso-INFN (Assergi, Italy) (2016 Feb—2019 May)
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Single developer and maintainer of multivariate fitting tool (GooStats) accelerated by parallel computing,
which reduces the fitting time from weeks to less than one minute.
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Leader of the evaluation of the systematic uncertainties for Borexino solar analysis.
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Independent analysis of 3% precision measurement of solar ν(
7
Be) neutrinos on Borexino Phase-II data.
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Original idea of the direct measurement of MSW transition region to test new physics using JUNO.
Highlighted in the NuFact conference summary talk as “exciting results in the next years”.
Visiting student | Institute of High Energy Physics (Beijing, China) (2011 summer, 2013 Feb—2015 Nov)
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Designed and conducted the measurement bis-MSB fluorescence yield. Original idea to extend the
wavelength range by varying solution concentration.
Standard Solar Model Solar neutrinos can be used to study the interior region of the Sun and improve the
standard solar models. They are produced when hydrogen nuclei are fused to helium nuclei. There are two types
of such processes activated in the Sun, the pp-chain and CNO-cycle processes. As the core analyst, I
participated in the experimental evidence of the solar neutrinos from the CNO-cycle. As the main analyst, I
participated in the comprehensive measurement of pp-chain solar neutrino fluxes. Currently, the recent solar
model predictions prefer low metal abundances which are, however, in tension with helioseismology
data preferring the older solar model predictions with higher metal abundances. This is known as the Solar
Metallicity Problem. The CNO neutrino fluxes directly depends on the carbon and nitrogen abundances and
thus can provide hints to the problem. Our results disfavor the LZ model at a significance of 2.1 σ.
Neutrino Oscillations Oscillation of solar neutrinos are modified by the matter effect due to interaction between
neutrinos and the matter in the Sun. Oscillations of solar neutrinos in both matter-effect-enhanced and
-negligible scenarios have been observed, while not yet for the transition region. Because JUNO combines the
advantage of large target mass and low detection-energy-threshold, it is expected that JUNO can measure the
survival probability of solar neutrinos in the MSW-transition region and study new physics.
AWARDS
2018.02 Chinese scholarship Council, award for outstanding self finance students abroad
GRANTS
Study of non-linearity of liquid scintillator detector. National Natural Science Foundation of China (Grant
No. 11390381), participant
Collaborative Research: Solar Neutrino Science with Borexino. NSF Grant (1821080), Participant.
Updated on Monday, April 25, 2022
SERVICE WORK
Reviewed papers in European Journal of Physics C, Universe, Physics Scripta etc.
2020.08—now Universe/MDPI associate editor
Developer and maintainer of GooStats, the multivariate fitting tool of Borexino
OUTREACH
2016.05 LNGS tour guide. Chinese ambassador visit to LNGS.
2018.06 A PHD’s imagination towards Science and Career. Outstanding student award ceremony.
2019.08 LNGS tour guide. Chinese ambassador visit to LNGS.
TEACHING EXPERIENCE
• 2013—2014 Teaching assistance of thermal dynamics and statistical physics, Wuhan University, Wuhan
Invited Conference Talks
Solar Neutrino Physics with Borexino. 2021 Fall Meeting of the APS Division of Nuclear Physics (APS-
DNP). 2021 October 11-14. Virtual.
Experimental evidence of neutrinos produced in the CNO fusion cycle in the Sun with Borexino. EPS-
HEP. 2021 July 26-30. Virtual.
Prospects of neutrino mass ordering and solar neutrinos with JUNO. Louise Lake Winter Institute. 2019
August 10-16. Fairmont Chateau. Edmonton, Alberta, Canada (Plenary)
Status and Physics of JUNO. The 20th International Workshop on Neutrinos from Accelerators. 2018
August 12-18. Virginia Tech. Blacksburg, VA, U.S. (Plenary)
Latest Phase-II results and Prospects of CNO neutrino detection with Borexino. International
Symposium of Neutrino Frontier. 2018 July 16-19. ICISE center, Quy Nhon, Vietnam. (Plenary)
Selected main-contributor-papers
JUNO collaboration, Feasibility and physics potential of detecting
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B solar neutrinos at JUNO, Chinese
Physics C, 45, 1 (2021).
Borexino collaboration, Experimental Evidence of neutrinos produced in the CNO fusion cycle in the
Sun, Nature, 587, 577-582 (2020).
Borexino collaboration, Sensitivity to neutrinos from the solar CNO cycle in Borexino. European Physics
Journal. C 80, 1091 (2020).
Borexino collaboration, Simultaneous precision spectroscopy of pp,
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Be, and pep solar neutrinos with
Borexino Phase-II, Physics Review D, vol. 100, issue 8, 082004, 2019.
Xuefeng Ding, GooStats: A GPU-based framework for multi-variate analysis in particle physics, JINST
13 (2018) no.12, P12018.
Borexino collaboration, Comprehensive measurement of pp-chain solar neutrinos with Borexino, Nature,
vol. 562, no. 7728, pp. 505–510, 2018.
Borexino collaboration, Limiting neutrino magnetic moments with Borexino Phase-II solar neutrino
data. Phys.Rev.D 96 (2017) no.9, 091103
Daya Bay collaboration, Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay
Phys. Rev. Lett. 116 (2016) no.6, 061801, Erratum: Phys. Rev. Lett. 118 (2017) no.9, 099902
X. F. Ding et al., Measurement of the fluorescence quantum yield of bis-MSB Chin. Phys. C 39 (2015)
no.12, 126001
Updated on Monday, April 25, 2022