Compact perturbative expressions for oscillations with sterile neutrinos in matter
Abstract
We extend a simple and compact method for calculating the three flavor neutrino oscillation probabilities in uniform matter density to schemes with sterile neutrinos, with favorable features inherited. The only constraint of the extended method is that the scale of the matter potential is not significantly larger than the atmospheric $$\Delta m^2$$, which is satisfied by all the running and proposed accelerator oscillation experiments. Degeneracy of the zeroth order eigensystem around solar and atmospheric resonances are resolved. Corrections to the zeroth order results are restricted to no larger than the ratio of the solar to the atmospheric $$\Delta m^2$$. The zeroth order expressions are exact in vacuum because all the higher order corrections vanish when the matter potential is set zero. Also because all the corrections are continuous functions of matter potential, the zeroth order precision is much better than $$\Delta m^2_\odot/\Delta m^2_\text{atm}$$ for weak matter effect. Numerical tests are presented to verify the theoretical predictions of the exceptional features. Moreover, possible applications of the method in experiments to check the existence of sterile neutrinos are discussed.
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); Marie Sklodowska Curie Grant
- OSTI Identifier:
- 1603737
- Alternate Identifier(s):
- OSTI ID: 1527394
- Report Number(s):
- arXiv:1905.01356; FERMILAB-PUB-19-042-T
Journal ID: ISSN 2470-0010; PRVDAQ; 056005
- Grant/Contract Number:
- AC02-07CH11359; 690575; 674896
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. D.
- Additional Journal Information:
- Journal Name: Physical Review. D. Journal Volume: 101 Journal Issue: 5; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Neutrino oscillations
Citation Formats
Parke, Stephen J., and Zhang, Xining. Compact perturbative expressions for oscillations with sterile neutrinos in matter. United States: N. p., 2020.
Web. doi:10.1103/PhysRevD.101.056005.
Parke, Stephen J., & Zhang, Xining. Compact perturbative expressions for oscillations with sterile neutrinos in matter. United States. https://doi.org/10.1103/PhysRevD.101.056005
Parke, Stephen J., and Zhang, Xining. Thu .
"Compact perturbative expressions for oscillations with sterile neutrinos in matter". United States. https://doi.org/10.1103/PhysRevD.101.056005.
@article{osti_1603737,
title = {Compact perturbative expressions for oscillations with sterile neutrinos in matter},
author = {Parke, Stephen J. and Zhang, Xining},
abstractNote = {We extend a simple and compact method for calculating the three flavor neutrino oscillation probabilities in uniform matter density to schemes with sterile neutrinos, with favorable features inherited. The only constraint of the extended method is that the scale of the matter potential is not significantly larger than the atmospheric $\Delta m^2$, which is satisfied by all the running and proposed accelerator oscillation experiments. Degeneracy of the zeroth order eigensystem around solar and atmospheric resonances are resolved. Corrections to the zeroth order results are restricted to no larger than the ratio of the solar to the atmospheric $\Delta m^2$. The zeroth order expressions are exact in vacuum because all the higher order corrections vanish when the matter potential is set zero. Also because all the corrections are continuous functions of matter potential, the zeroth order precision is much better than $\Delta m^2_\odot/\Delta m^2_\text{atm}$ for weak matter effect. Numerical tests are presented to verify the theoretical predictions of the exceptional features. Moreover, possible applications of the method in experiments to check the existence of sterile neutrinos are discussed.},
doi = {10.1103/PhysRevD.101.056005},
journal = {Physical Review. D.},
number = 5,
volume = 101,
place = {United States},
year = {Thu Mar 05 00:00:00 EST 2020},
month = {Thu Mar 05 00:00:00 EST 2020}
}
https://doi.org/10.1103/PhysRevD.101.056005
Web of Science
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