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The Role of matter density uncertainties in the analysis of future neutrino factory experiments
KTH, Superseded Departments, Physics.ORCID iD: 0000-0002-3525-8349
2003 (English)In: Physical Review D. Particles and fields, ISSN 0556-2821, E-ISSN 1089-4918, Vol. 68, no 7, 073007-1-073007-11 p.Article in journal (Refereed) Published
Abstract [en]

Matter density uncertainties can affect the measurements of the neutrino oscillation parameters at future neutrino factory experiments, such as the measurements of the mixing parameters theta(13) and delta(CP). We compare different matter density uncertainty models and discuss the possibility to include the matter density uncertainties in a complete statistical analysis. Furthermore, we systematically study in which measurements and where in the parameter space matter density uncertainties are most relevant. We illustrate this discussion with examples that show the effects as functions of different magnitudes of the matter density uncertainties. We find that matter density uncertainties are especially relevant for large sin(2)2theta(13)greater than or similar to10(-3). Within the KamLAND-allowed range, they are most relevant for the precision measurements of sin(2)2theta(13) and delta(CP), but less relevant for binary measurements, such as for the sign of Deltam(31)(2), the sensitivity to sin(2)2theta(13), or the sensitivity to maximal CP violation. In addition, we demonstrate that knowing the matter density along a specific baseline better than to about 1% precision means that all measurements will become almost independent of the matter density uncertainties.

Place, publisher, year, edition, pages
The American Physical Society , 2003. Vol. 68, no 7, 073007-1-073007-11 p.
Keyword [en]
long-base-line, oscillation experiments, CP violation, earth, spectroscopy, superbeams, KamLAND
National Category
Subatomic Physics
URN: urn:nbn:se:kth:diva-22937DOI: 10.1103/PhysRevD.68.073007ISI: 000186391200016OAI: diva2:341635
Swedish Research Council, 621-2001-1611Swedish Research Council, 621-2002-3577
QC 20100525Available from: 2011-06-22 Created: 2010-08-10 Last updated: 2011-06-22Bibliographically approved

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