KM3NeT - ORCA: Measuring neutrino oscillations and the mass hierarchy in the Mediterranean Sea
International audience The atmospheric flux of neutrinos has traditionally been seen as a background to the detection of an astrophysical neutrino signal. In recent years however, it has been realised that in the few- GeV range, this flux holds a key to resolve a fundamental question of particle phy...
Main Author: | |
---|---|
Other Authors: | , , |
Format: | Conference Object |
Language: | English |
Published: |
HAL CCSD
2015
|
Subjects: | |
Online Access: | http://hal.in2p3.fr/in2p3-01468190 |
id |
ftccsdartic:oai:HAL:in2p3-01468190v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:in2p3-01468190v1 2023-05-15T17:53:37+02:00 KM3NeT - ORCA: Measuring neutrino oscillations and the mass hierarchy in the Mediterranean Sea Brunner, J. Centre de Physique des Particules de Marseille (CPPM) Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Km3NeT Collaboration The Hague, Netherlands 2015-07-30 http://hal.in2p3.fr/in2p3-01468190 en eng HAL CCSD in2p3-01468190 http://hal.in2p3.fr/in2p3-01468190 INSPIRE: 1483428 PoS ICRC2015 34th International Cosmic Ray Conference (ICRC2015) http://hal.in2p3.fr/in2p3-01468190 34th International Cosmic Ray Conference (ICRC2015), Jul 2015, The Hague, Netherlands https://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=236 [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] info:eu-repo/semantics/conferenceObject Conference papers 2015 ftccsdartic 2021-11-07T04:01:00Z International audience The atmospheric flux of neutrinos has traditionally been seen as a background to the detection of an astrophysical neutrino signal. In recent years however, it has been realised that in the few- GeV range, this flux holds a key to resolve a fundamental question of particle physics: that of the neutrino mass hierarchy, i.e. whether the mass eigenstate n 3 is heavier (normal hierarchy) or lighter (inverted hierarchy) than the n 1 and n 2 states. The influence of the mass hierarchy on neutrino oscillations in matter leaves its imprint on the atmospheric neutrino flux via the characteristic appearance/disappearance patterns of different neutrino types as a function of energy and path through the Earth. ORCA - Oscillations Research with Cosmics in the Abyss - will be a dense configuration of KM3NeT detection units, optimised for studying the interactions of neutrinos in seawater at low energies. To be deployed at the French KM3NeT site, ORCA’s multi-PMT optical modules will take advantage of the excellent optical properties of deep seawater to accurately reconstruct both cascade and track events with a few GeV of energy. This contribution reviews these methods and technology, and compares ORCA’s power for not only determining the neutrino mass hierarchy, but placing new constraints on other key parameters such as q 23 . Conference Object Orca Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] |
spellingShingle |
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] Brunner, J. KM3NeT - ORCA: Measuring neutrino oscillations and the mass hierarchy in the Mediterranean Sea |
topic_facet |
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] |
description |
International audience The atmospheric flux of neutrinos has traditionally been seen as a background to the detection of an astrophysical neutrino signal. In recent years however, it has been realised that in the few- GeV range, this flux holds a key to resolve a fundamental question of particle physics: that of the neutrino mass hierarchy, i.e. whether the mass eigenstate n 3 is heavier (normal hierarchy) or lighter (inverted hierarchy) than the n 1 and n 2 states. The influence of the mass hierarchy on neutrino oscillations in matter leaves its imprint on the atmospheric neutrino flux via the characteristic appearance/disappearance patterns of different neutrino types as a function of energy and path through the Earth. ORCA - Oscillations Research with Cosmics in the Abyss - will be a dense configuration of KM3NeT detection units, optimised for studying the interactions of neutrinos in seawater at low energies. To be deployed at the French KM3NeT site, ORCA’s multi-PMT optical modules will take advantage of the excellent optical properties of deep seawater to accurately reconstruct both cascade and track events with a few GeV of energy. This contribution reviews these methods and technology, and compares ORCA’s power for not only determining the neutrino mass hierarchy, but placing new constraints on other key parameters such as q 23 . |
author2 |
Centre de Physique des Particules de Marseille (CPPM) Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Km3NeT Collaboration |
format |
Conference Object |
author |
Brunner, J. |
author_facet |
Brunner, J. |
author_sort |
Brunner, J. |
title |
KM3NeT - ORCA: Measuring neutrino oscillations and the mass hierarchy in the Mediterranean Sea |
title_short |
KM3NeT - ORCA: Measuring neutrino oscillations and the mass hierarchy in the Mediterranean Sea |
title_full |
KM3NeT - ORCA: Measuring neutrino oscillations and the mass hierarchy in the Mediterranean Sea |
title_fullStr |
KM3NeT - ORCA: Measuring neutrino oscillations and the mass hierarchy in the Mediterranean Sea |
title_full_unstemmed |
KM3NeT - ORCA: Measuring neutrino oscillations and the mass hierarchy in the Mediterranean Sea |
title_sort |
km3net - orca: measuring neutrino oscillations and the mass hierarchy in the mediterranean sea |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
http://hal.in2p3.fr/in2p3-01468190 |
op_coverage |
The Hague, Netherlands |
genre |
Orca |
genre_facet |
Orca |
op_source |
PoS ICRC2015 34th International Cosmic Ray Conference (ICRC2015) http://hal.in2p3.fr/in2p3-01468190 34th International Cosmic Ray Conference (ICRC2015), Jul 2015, The Hague, Netherlands https://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=236 |
op_relation |
in2p3-01468190 http://hal.in2p3.fr/in2p3-01468190 INSPIRE: 1483428 |
_version_ |
1766161318610468864 |