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SUMMARY:Beta Spectra Shape Studies for the Prediction of Reactor Antineutr
 ino Spectra
DTSTART;VALUE=DATE-TIME:20241119T153000Z
DTEND;VALUE=DATE-TIME:20241119T153700Z
DTSTAMP;VALUE=DATE-TIME:20260422T132458Z
UID:indico-contribution-25479@indico.ific.uv.es
DESCRIPTION:Speakers: Alcalá Gustavo (IFIC)\nPredictions of the spectra o
 f nuclear reactors’ electron antineutrinos do not coincide with the meas
 urements [1]. These differences are known as the “Reactor Antineutrino A
 nomaly” and the spectral “bump” [2]. The e-shape collaboration looks
  for solutions for these problems via the improvement of relevant nuclear 
 models used in the calculation of antineutrino spectra from reactors [3]. 
 The collaboration uses the summation method [4] to calculate predictions o
 f reactors’ antineutrino spectra due to its improved results over other 
 methods\, and electron $\\Delta$E-E detectors to measure the beta spectra 
 of relevant contributors to the antineutrino spectra [5]. Measurements of 
 beta shapes were conducted at IGISOL-4 because the facility has a double P
 enning trap (JYFLTRAP) that produces isotopically clean radioactive beams 
 of the isotopes of interest. This work presents the analysis of the Rb-92 
 beta spectrum measured at the facility during the I233 experiment.\n\n[1] 
 G. Mention\, et al.\, Phys. Rev. D 83 (2011) pg. 073006.\n[2] J. H. Choi\,
  et al.\, Phys. Rev. Lett. 116 (2016) pg. 211801.\n[3] A. Algora\, et al.\
 , Eur. Phys. J. A 57 (2021) pg. 85.\n[4] M. Estienne\, et al.\, Phys. Rev.
  Lett. 123 (2019) pg. 022502.\n[5] V. Guadilla\, et al.\, arXiv preprint\,
  arXiv:2305.13832 (2023).\n\nhttps://indico.ific.uv.es/event/7664/contribu
 tions/25479/
LOCATION:
URL:https://indico.ific.uv.es/event/7664/contributions/25479/
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