First-forbidden transitions in reactor antineutrino spectra

Hayen, L.; Kostensalo, J.; Severijns, N.; Suhonen, J.

doi:10.1103/PhysRevC.99.031301

First-forbidden transitions in reactor antineutrino spectra

Mar 6, 2019

6 pages

Published in:

Phys.Rev.C 99 (2019) 3, 031301

Published: Mar 6, 2019

DOI:

10.1103/PhysRevC.99.031301

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Abstract: (APS)

We study the dominant forbidden transitions in the antineutrino spectra of the fission actinides from 4 MeV onward using the nuclear shell model. Through explicit calculation of the shape factor, we show the expected changes in cumulative electron and antineutrino spectra. Relative to the allowed approximation this results in a minor decrease of electron spectra above 4 MeV, whereas an increase of several percent is observed in antineutrino spectra. We show that forbidden transitions dominate the spectral flux for most of the experimentally accessible range. Based on the shell model calculations we attempt a parametrization of forbidden transitions and propose a spectral correction for all first-forbidden transitions. We enforce correspondence with the Institut Laue-Langevin data set using a summation+conversion approach. When compared against modern reactor neutrino experiments, the resultant spectral change is observed to be of comparable magnitude and shape as the reported spectral shoulder.

Nuclear Structure
antineutrino: spectrum
nucleus: structure function
antineutrino: nuclear reactor
electron: spectrum
neutrino: nuclear reactor
spectral
shell model
parametrization
fission

References(59)

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[1]

The Reactor Antineutrino Anomaly

G. Mention
(
- DAPNIA, Saclay
)
,
M. Fechner
(
- DAPNIA, Saclay
)
,
Th. Lasserre
(
- DAPNIA, Saclay and
- APC, Paris
)
,
Th.A. Mueller
(
- DAPNIA, Saclay
)
,
D. Lhuillier
(
- DAPNIA, Saclay
)

et al.

- Phys.Rev.D 83 (2011) 073006
•
e-Print:
- 1101.2755
•
DOI:
- 10.1103/PhysRevD.83.073006

[2]

Improved Predictions of Reactor Antineutrino Spectra

Th.A. Mueller
(
- DAPNIA, Saclay
)
,
D. Lhuillier
(
- DAPNIA, Saclay
)
,
M. Fallot
(
- SUBATECH, Nantes
)
,
A. Letourneau
(
- DSM, DAPNIA, Saclay
)
,
S. Cormon
(
- SUBATECH, Nantes
)

et al.

- Phys.Rev.C 83 (2011) 054615
•
e-Print:
- 1101.2663
•
DOI:
- 10.1103/PhysRevC.83.054615

[3]

On the determination of anti-neutrino spectra from nuclear reactors

Patrick Huber
(
- Virginia Tech.
)

- Phys.Rev.C 84 (2011) 024617,
- Phys.Rev.C 85 (2012) 029901 (erratum)
•
e-Print:
- 1106.0687
•
DOI:
- 10.1103/PhysRevC.85.029901

[3]

On the determination of anti-neutrino spectra from nuclear reactors

Patrick Huber
(
- Virginia Tech.
)

- Phys.Rev.C 84 (2011) 024617,
- Phys.Rev.C 85 (2012) 029901 (erratum)
•
e-Print:
- 1106.0687
•
DOI:
- 10.1103/PhysRevC.85.029901

[4]

Evidence for nu(mu) ---> nu(e) neutrino oscillations from LSND

LSND

Collaboration

•

C. Athanassopoulos
(
- Temple U.
)

et al.

- Phys.Rev.Lett. 81 (1998) 1774-1777
•
e-Print:
- nucl-ex/9709006
•
DOI:
- 10.1103/PhysRevLett.81.1774

[5]

The LSND and MiniBooNE Oscillation Searches at High $\Delta m^2$

- Ann.Rev.Nucl.Part.Sci. 63 (2013) 45-67
•
e-Print:
- 1306.6494
•
DOI:
- 10.1146/annurev-nucl-102711-094957

[6]

Reanalysis of the GALLEX solar neutrino flux and source experiments

- Phys.Lett.B 685 (2010) 47-54
•
e-Print:
- 1001.2731
•
DOI:
- 10.1016/j.physletb.2010.01.030

[7]

Light Sterile Neutrinos: A White Paper

K.N. Abazajian
(
- UC, Irvine
)
,
M.A. Acero
(
- Mexico U., CEN
)
,
S.K. Agarwalla
(
- Valencia U.
)
,
A.A. Aguilar-Arevalo
(
- Mexico U., CEN
)
,
C.H. Albright
(
- Fermilab and
- Northern Illinois U.
)

et al.

e-Print:
- 1204.5379

[8]

Light sterile neutrinos

S. Gariazzo
(
- INFN, Turin and
- Turin U.
)
,
C. Giunti
(
- INFN, Turin and
- Turin U.
)
,
M. Laveder
(
- Padua U. and
- INFN, Padua
)
,
Y.F. Li
(
- Beijing, Inst. High Energy Phys.
)
,
E.M. Zavanin
(
- Campinas State U. and
- INFN, Turin and
- Turin U.
)

- J.Phys.G 43 (2016) 033001
•
e-Print:
- 1507.08204
•
DOI:
- 10.1088/0954-3899/43/3/033001

[9]

Sterile Neutrino Search at the NEOS Experiment

NEOS

Collaboration

•

Y.J. Ko
(
- Chung-Ang U.
)

et al.

- Phys.Rev.Lett. 118 (2017) 12, 121802
•
e-Print:
- 1610.05134
•
DOI:
- 10.1103/PhysRevLett.118.121802

[10]

First search for short-baseline neutrino oscillations at HFIR with PROSPECT

PROSPECT

Collaboration

•

J. Ashenfelter
(
- Yale U.
)

et al.

- Phys.Rev.Lett. 121 (2018) 25, 251802
•
e-Print:
- 1806.02784
•
DOI:
- 10.1103/PhysRevLett.121.251802

[11]

Search for sterile neutrinos at the DANSS experiment

DANSS

Collaboration

•

I Alekseev
(
- Moscow, ITEP and
- Moscow Phys. Eng. Inst. and
- Moscow, MIPT
)

et al.

- Phys.Lett.B 787 (2018) 56-63
•
e-Print:
- 1804.04046
•
DOI:
- 10.1016/j.physletb.2018.10.038

[12]

Sterile Neutrino Constraints from the STEREO Experiment with 66 Days of Reactor-On Data

STEREO

Collaboration

•

H. Almazán
(
- Heidelberg, Max Planck Inst.
)

et al.

- Phys.Rev.Lett. 121 (2018) 16, 161801
•
e-Print:
- 1806.02096
•
DOI:
- 10.1103/PhysRevLett.121.161801

[13]

Neutrino-4 Collaboration

Collaboration

•

A.P. Serebrov

for the collaboration.

e-Print:
- 1805.10561

[14]

A novel segmented-scintillator antineutrino detector

SoLid

Collaboration

•

Y. Abreu
(
- Antwerp U.
)

et al.

- JINST 12 (2017) 04, P04024
•
e-Print:
- 1703.01683
•
DOI:
- 10.1088/1748-0221/12/04/P04024

[15]

Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay

Daya Bay

Collaboration

•

Feng Peng An
(
- East China U. Sci. Tech., Shanghai
)

et al.

- Phys.Rev.Lett. 116 (2016) 6, 061801,
- Phys.Rev.Lett. 118 (2017) 9, 099902 (erratum)
•
e-Print:
- 1508.04233
•
DOI:
- 10.1103/PhysRevLett.116.061801