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          Institute: MPI für Kernphysik     Collection: Neutrino Physics     Display Documents

ID: 29220.0, MPI für Kernphysik / Neutrino Physics
The HLMA project: determination of high Delta m(2) LMA mixing parameters and constraint on vertical bar U-e3 vertical bar with a new reactor neutrino experiment
Authors:Schönert, S.; Lasserre, T.; Oberauer, L.
Date of Publication (YYYY-MM-DD):2003-03
Title of Journal:Astroparticle Physics
Journal Abbrev.:Astropart Phys.
Issue / Number:6
Start Page:565
End Page:579
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:In the forthcoming months, the KamLAND experiment will probe the parameter space of the solar large mixing angle MSW solution as the origin of the solar neutrino deficit with (ν) over bar (e)'s from distant nuclear reactors. If however the solution realized in nature is such that Deltam(sol)(2) greater than or similar to 2 x 10(-4) eV(2) (thereafter named the HLMA region), KamLAND will only observe a rate suppression but no spectral distortion and hence it will not have the optimal sensitivity to measure the mixing parameters. In this case, we propose a new medium baseline reactor experiment located at Heilbronn (Germany) to pin down the precise value of the solar mixing parameters. In this paper, we present the Heilbronn detector site, we calculate the (ν) over bar (e) interaction rate and the positron spectrum expected from the surrounding nuclear power plants. We also discuss the sensitivity of such an experiment to /U-c3/ in both normal and inverted neutrino mass hierarchy scenarios. We then outline the detector design, estimate background signals induced by natural radioactivity as well as by in situ cosmic ray muon interaction, and discuss a strategy to detect the anti-neutrino signal 'free of background'. (C) 2002 Elsevier Science B.V. All rights reserved.
Free Keywords:solar and atmospheric neutrinos; reactor neutrinos; neutrino and gamma astronomy; neutrino physics; low background physics
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Independent Research Group S. Schönert/Neutrino Physics
External Affiliations:Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117; Heidelberg, Germany; Max Planck Inst Kernphys, D-69117 Heidelberg, Germany; CEA Saclay, DSM, DAPNIA, SPP, F-91191 Gif Sur Yvette, France; Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Assergi, AQ, Italy
Identifiers:ISI:000181187400003 [ID No:1]
ISSN:0927-6505 [ID No:2]
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