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Title: Decoherence, matter effect, and neutrino hierarchy signature in long baseline experiments

Authors:
;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1410388
Grant/Contract Number:
SC0007866
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 9; Related Information: CHORUS Timestamp: 2017-11-27 10:28:21; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Coelho, João A. B., and Mann, W. Anthony. Decoherence, matter effect, and neutrino hierarchy signature in long baseline experiments. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.093009.
Coelho, João A. B., & Mann, W. Anthony. Decoherence, matter effect, and neutrino hierarchy signature in long baseline experiments. United States. doi:10.1103/PhysRevD.96.093009.
Coelho, João A. B., and Mann, W. Anthony. 2017. "Decoherence, matter effect, and neutrino hierarchy signature in long baseline experiments". United States. doi:10.1103/PhysRevD.96.093009.
@article{osti_1410388,
title = {Decoherence, matter effect, and neutrino hierarchy signature in long baseline experiments},
author = {Coelho, João A. B. and Mann, W. Anthony},
abstractNote = {},
doi = {10.1103/PhysRevD.96.093009},
journal = {Physical Review D},
number = 9,
volume = 96,
place = {United States},
year = 2017,
month =
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 27, 2018
Publisher's Accepted Manuscript

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  • We show simple methods of how to separate pure CP-violating effects from matter effects in long baseline neutrino oscillation experiments with three generations of neutrinos. We give compact formulas for neutrino oscillation probabilities assuming one of the three neutrino masses (presumably {nu}{sub {tau}} mass) to be much larger than the other masses and the effective mass due to the matter effect. Two methods are shown. One is to observe envelopes of the curves of oscillation probabilities as functions of neutrino energy; a merit of this method is that only a single detector is enough to determine the presence of CPmore » violation. The other is to compare experiments with at least two different baseline lengths; this has the merit that it needs only a narrow energy range of oscillation data. {copyright} {ital 1997} {ital The American Physical Society}« less
  • Next-generation long-baseline electron neutrino appearance experiments will seek to discover C P violation, determine the mass hierarchy and resolve the θ 23 octant. In light of the recent precision measurements of θ 13 , we consider the sensitivity of these measurements in a study to determine the optimal baseline, including practical considerations regarding beam and detector performance. We conclude that a detector at a baseline of at least 1000 km in a wide-band muon neutrino beam is themore » optimal configuration.« less
  • We calculate matter effects on neutrino oscillations relevant for long baseline experiments. In particular, we compare the results obtained with constant density along the neutrino path versus results obtained by incorporating the actual density profiles in the Earth. We study the dependence of the oscillation signal on both E/{delta}m{sub atm}{sup 2} and on the angles in the leptonic mixing matrix. We also comment on the influence of {delta}m{sub sol}{sup 2} and CP violation on the oscillations. The results show quantitatively how, as a function of these input parameters, matter effects can cause significant (25%) changes in the oscillation probabilities. Anmore » important conclusion is that matter effects can be useful in amplifying certain neutrino oscillation signals and helping one to obtain measurements of mixing parameters and the magnitude and sign of {delta}m{sub atm}{sup 2}. (c) 2000 The American Physical Society.« less
  • No abstract prepared.