Characterizing the energy resolution of the MicroBooNE LArTPC at the MeV scale using monoenergetic features of ²⁰⁸Tl decays

@misc{collaboration2026characterizing,
  title = {{Characterizing the energy resolution of the MicroBooNE LArTPC at the MeV scale using monoenergetic features of $^208$Tl decays}},
  author = {MicroBooNE collaboration and P. Abratenko and D. Andrade Aldana and J. Asaadi and A. Ashkenazi and S. Balasubramanian and B. Baller and A. Barnard and G. Barr and D. Barrow and J. Barrow and V. Basque and J. Bateman and B. Behera and O. Benevides Rodrigues and S. Berkman and A. Bhat and M. Bhattacharya and V. Bhelande and A. Binau and M. Bishai and A. Blake and B. Bogart and T. Bolton and M. B. Brunetti and L. Camilleri and D. Caratelli and F. Cavanna and G. Cerati and A. Chappell and Y. Chen and J. M. Conrad and M. Convery and L. Cooper-Troendle and J. I. Crespo-Anadon and R. Cross and M. Del Tutto and S. R. Dennis and P. Detje and R. Diurba and Z. Djurcic and K. Duffy and S. Dytman and B. Eberly and P. Englezos and A. Ereditato and J. J. Evans and C. Fang and B. T. Fleming and W. Foreman and D. Franco and A. P. Furmanski and F. Gao and D. Garcia-Gamez and S. Gardiner and G. Ge and S. Gollapinni and E. Gramellini and P. Green and H. Greenlee},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2605.30709},
  eprint = {2605.30709},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.30709},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Characterizing the energy resolution of the MicroBooNE LArTPC at the MeV scale using monoenergetic features of ^208Tl decays
AU  - MicroBooNE collaboration
AU  - P. Abratenko
AU  - D. Andrade Aldana
AU  - J. Asaadi
AU  - A. Ashkenazi
AU  - S. Balasubramanian
AU  - B. Baller
AU  - A. Barnard
AU  - G. Barr
AU  - D. Barrow
AU  - J. Barrow
AU  - V. Basque
AU  - J. Bateman
AU  - B. Behera
AU  - O. Benevides Rodrigues
AU  - S. Berkman
AU  - A. Bhat
AU  - M. Bhattacharya
AU  - V. Bhelande
AU  - A. Binau
AU  - M. Bishai
AU  - A. Blake
AU  - B. Bogart
AU  - T. Bolton
AU  - M. B. Brunetti
AU  - L. Camilleri
AU  - D. Caratelli
AU  - F. Cavanna
AU  - G. Cerati
AU  - A. Chappell
AU  - Y. Chen
AU  - J. M. Conrad
AU  - M. Convery
AU  - L. Cooper-Troendle
AU  - J. I. Crespo-Anadon
AU  - R. Cross
AU  - M. Del Tutto
AU  - S. R. Dennis
AU  - P. Detje
AU  - R. Diurba
AU  - Z. Djurcic
AU  - K. Duffy
AU  - S. Dytman
AU  - B. Eberly
AU  - P. Englezos
AU  - A. Ereditato
AU  - J. J. Evans
AU  - C. Fang
AU  - B. T. Fleming
AU  - W. Foreman
AU  - D. Franco
AU  - A. P. Furmanski
AU  - F. Gao
AU  - D. Garcia-Gamez
AU  - S. Gardiner
AU  - G. Ge
AU  - S. Gollapinni
AU  - E. Gramellini
AU  - P. Green
AU  - H. Greenlee
PY  - 2026
DA  - 2026/10/12
PB  - arXiv
DO  - 10.48550/arxiv.2605.30709
UR  - https://arxiv.org/abs/2605.30709
AB  - A detailed understanding of the capabilities and fidelity of low-energy reconstruction is crucial for taking advantage of MeV-scale neutrino physics opportunities in liquid argon time projection chambers (LArTPCs). This study presents a measurement of the resolution of reconstructed energy in the MicroBooNE LArTPC at ≈ 1.5 MeV. The characterization is performed using monoenergetic signals generated by $2.614$ MeV γ-rays from ^208Tl decays undergoing pair production in the detector. The resolution is found to be (7.52 ± 0.78 (stat) ± 0.92 (syst))%. This value is consistent with the MicroBooNE simulation prediction of (9.70 ± 0.65 (stat))% at the $1.6 σ$ level. This study represents the first ever measurement of LArTPC energy resolution at the MeV scale and provides a pathway for monoenergetic energy calibrations in future experiments using LArTPC detectors.
ER  -