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SNO+

SNO+ detector. The inner vessel is filled with 780T of liquid scintillator and surrounded by a geodesic sphere of photomultiplier tubes immersed in ultra-pure water. The detector is located 2.1km underground at Canada's SNOLAB, outside of Sudbury, Western Ontario.

Credit: SNOLAB

Jeff Tseng

Professor of Physics

Research theme

  • Particle astrophysics & cosmology
  • Fundamental particles and interactions

Sub department

  • Particle Physics

Research groups

  • Rubin-LSST
  • SNO+
Jeff.Tseng@physics.ox.ac.uk
Telephone: 01865 (2)73398
Denys Wilkinson Building, room 674
Home page
  • About
  • Publications

Measurement of the B8 solar neutrino flux using the full SNO+ water phase dataset

Physical Review D American Physical Society (APS) 110:12 (2024) 122003

Authors:

A Allega, MR Anderson, S Andringa, M Askins, DM Asner, DJ Auty, A Bacon, F Barão, N Barros, R Bayes, EW Beier, A Bialek, SD Biller, E Blucher, E Caden, EJ Callaghan, M Chen, S Cheng, B Cleveland, D Cookman, J Corning, MA Cox, R Dehghani, J Deloye, MM Depatie, F Di Lodovico, C Dima, J Dittmer, KH Dixon, MS Esmaeilian, E Falk, N Fatemighomi, R Ford, A Gaur, OI González-Reina, D Gooding, C Grant, J Grove, S Hall, AL Hallin, D Hallman, WJ Heintzelman, RL Helmer, C Hewitt, B Hreljac, J Hu, P Huang, R Hunt-Stokes, SMA Hussain, AS Inácio, CJ Jillings, S Kaluzienski, T Kaptanoglu, J Kladnik, JR Klein, LL Kormos, B Krar, C Kraus, CB Krauss, T Kroupová, C Lake, L Lebanowski, C Lefebvre, V Lozza, M Luo, A Maio, S Manecki, J Maneira, RD Martin, N McCauley, AB McDonald, G Milton, D Morris, M Mubasher, S Naugle, LJ Nolan, HM O’Keeffe, GD Orebi Gann, J Page, K Paleshi, W Parker, J Paton, SJM Peeters, L Pickard, B Quenallata, P Ravi, A Reichold, S Riccetto, J Rose, R Rosero, I Semenec, J Simms, P Skensved, M Smiley, R Svoboda, B Tam, J Tseng, E Vázquez-Jáuregui, CJ Virtue, M Ward, JR Wilson, JD Wilson, A Wright, S Yang, M Yeh, Z Ye, S Yu, Y Zhang, K Zuber, A Zummo
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Data-driven core collapse supernova multilateration with first neutrino events

ArXiv 2410.11984 (2024)

Authors:

Farrukh Azfar, Jeff Tseng, Marta Colomer Molla, Kate Scholberg, Alec Habig, Segev BenZvi, Melih Kara, James Kneller, Jost Migenda, Dan Milisavljevic, Evan O'Connor
Details from ArXiV

The SNEWS 2.0 alert software for the coincident detection of neutrinos from core-collapse supernovae

Journal of Instrumentation IOP Publishing 19:10 (2024) p10017

Authors:

M Kara, S Torres-Lara, AL Baxter, S BenZvi, M Colomer Molla, A Habig, JP Kneller, M Lai, RF Lang, M Linvill, D Milisavljevic, J Migenda, C Orr, K Scholberg, J Smolsky, J Tseng, CD Tunnell, J Vasel, A Sheshukov
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Red supergiant candidates for multimessenger monitoring of the next Galactic supernova

Monthly Notices of the Royal Astronomical Society Oxford University Press 529:4 (2024) 3630-3650

Authors:

Sarah Healy, Shunsaku Horiuchi, Marta Colomer Molla, Dan Milisavljevic, Jeffrey Tseng, Faith Bergin, Kathryn Weil, Masaomi Tanaka, Sebastián Otero

Abstract:

We compile a catalogue of 578 highly probable and 62 likely red supergiants (RSGs) of the Milky Way, which represents the largest list of Galactic RSG candidates designed for continuous follow-up efforts to date. We match distances measured by Gaia DR3, 2MASS photometry, and a 3D Galactic dust map to obtain luminous bright late-type stars. Determining the stars' bolometric luminosities and effective temperatures, we compare to Geneva stellar evolution tracks to determine likely RSG candidates, and quantify contamination using a catalogue of Galactic AGB in the same luminosity-temperature space. We add details for common or interesting characteristics of RSG, such as multistar system membership, variability, and classification as a runaway. As potential future core-collapse supernova progenitors, we study the ability of the catalogue to inform the Supernova Early Warning System (SNEWS) coincidence network made to automate pointing, and show that for 3D position estimates made possible by neutrinos, the number of progenitor candidates can be significantly reduced, improving our ability to observe the progenitor pre-explosion and the early phases of core-collapse supernovae.
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Details from ORA

Evidence of antineutrinos from distant reactors using pure water at SNO

Physical Review Letters American Physical Society 130:9 (2023) 91801

Authors:

A Allega, Mr Anderson, S Andringa, J Antunes, M Askins, Dj Auty, A Bacon, N Barros, F Barão, R Bayes, Ew Beier, Ts Bezerra, A Bialek, Sd Biller, E Blucher, E Caden, Ej Callaghan, S Cheng, M Chen, B Cleveland, D Cookman, J Corning, Ma Cox, R Dehghani, J Deloye, C Deluce, Mm Depatie, J Dittmer, Kh Dixon, F Di Lodovico, Bryony Elbert, E Falk, N Fatemighomi, R Ford, K Frankiewicz, A Gaur, Oi González-Reina, D Gooding, C Grant, J Grove, Al Hallin, D Hallman, Wj Heintzelman, Rl Helmer, J Hu, R Hunt-Stokes, Sma Hussain, As Inácio, Cj Jillings, S Kaluzienski

Abstract:

The SNO+ Collaboration reports the first evidence of reactor antineutrinos in a Cherenkov detector. The nearest nuclear reactors are located 240 km away in Ontario, Canada. This analysis uses events with energies lower than in any previous analysis with a large water Cherenkov detector. Two analytical methods are used to distinguish reactor antineutrinos from background events in 190 days of data and yield consistent evidence for antineutrinos with a combined significance of 3.5σ.
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