Serveur d'exploration sur l'opéra

Attention, ce site est en cours de développement !
Attention, site généré par des moyens informatiques à partir de corpus bruts.
Les informations ne sont donc pas validées.

Measurement of the neutrino velocity with the ICARUS detector at the CNGS beam

Identifieur interne : 000913 ( Main/Exploration ); précédent : 000912; suivant : 000914

Measurement of the neutrino velocity with the ICARUS detector at the CNGS beam

Auteurs :

Source :

RBID : Pascal:12-0247589

Descripteurs français

English descriptors

Abstract

At the end of the 2011 run, the CERN CNGS neutrino beam has been briefly operated in lower intensity mode with ∼ 1012 p.o.t./pulse and with a proton beam structure made of four LHC-like extractions, each with a narrow width of ∼ 3 ns, separated by 524 ns. This very tightly bunched beam allowed a very accurate time-of-flight measurement of neutrinos from CERN to LNGS on an event-by-event basis. The ICARUS T600 detector (CNGS2) has collected 7 beam-associated events, consistent with the CNGS collected neutrino flux of 2.2 x 1016 p.o.t. and in agreement with the well-known characteristics of neutrino events in the LAr-TPC. The time of flight difference between the speed of light and the arriving neutrino LAr-TPC events has been analysed. The result δt = 0.3 ± 4.9(stat.) ± 9.0(syst.) ns is compatible with the simultaneous arrival of all events with speed equal to that of light. This is in a striking difference with the reported result of OPERA (OPERA Collaboration, 2011) [1] claiming that high energy neutrinos from CERN arrive at LNGS ∼ 60 ns earlier than expected from luminal speed.


Affiliations:


Links toward previous steps (curation, corpus...)


Le document en format XML

<record>
<TEI>
<teiHeader>
<fileDesc>
<titleStmt>
<title xml:lang="en" level="a">Measurement of the neutrino velocity with the ICARUS detector at the CNGS beam</title>
</titleStmt>
<publicationStmt>
<idno type="wicri:source">INIST</idno>
<idno type="inist">12-0247589</idno>
<date when="2012">2012</date>
<idno type="stanalyst">PASCAL 12-0247589 INIST</idno>
<idno type="RBID">Pascal:12-0247589</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">000090</idno>
<idno type="wicri:Area/PascalFrancis/Curation">000439</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">000066</idno>
<idno type="wicri:Area/Main/Merge">000911</idno>
<idno type="wicri:Area/Main/Curation">000913</idno>
<idno type="wicri:Area/Main/Exploration">000913</idno>
</publicationStmt>
<sourceDesc>
<biblStruct>
<analytic>
<title xml:lang="en" level="a">Measurement of the neutrino velocity with the ICARUS detector at the CNGS beam</title>
</analytic>
<series>
<title level="j" type="main">Physics letters. Section B</title>
<title level="j" type="abbreviated">Phys. lett., Sect. B</title>
<idno type="ISSN">0370-2693</idno>
<imprint>
<date when="2012">2012</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt>
<title level="j" type="main">Physics letters. Section B</title>
<title level="j" type="abbreviated">Phys. lett., Sect. B</title>
<idno type="ISSN">0370-2693</idno>
</seriesStmt>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>CERN</term>
<term>Elementary particles</term>
<term>Intensity</term>
<term>LHC collider</term>
<term>Light velocity</term>
<term>Massless particles</term>
<term>Neutrino beams</term>
<term>Neutrinos</term>
<term>Proton beams</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Neutrino</term>
<term>CERN</term>
<term>Faisceau neutrino</term>
<term>Intensité</term>
<term>Faisceau proton</term>
<term>Collisionneur LHC</term>
<term>Vitesse lumière</term>
<term>Particule sans masse</term>
<term>Particule élémentaire</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr">
<term>Particule élémentaire</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">At the end of the 2011 run, the CERN CNGS neutrino beam has been briefly operated in lower intensity mode with ∼ 10
<sup>12</sup>
p.o.t./pulse and with a proton beam structure made of four LHC-like extractions, each with a narrow width of ∼ 3 ns, separated by 524 ns. This very tightly bunched beam allowed a very accurate time-of-flight measurement of neutrinos from CERN to LNGS on an event-by-event basis. The ICARUS T600 detector (CNGS2) has collected 7 beam-associated events, consistent with the CNGS collected neutrino flux of 2.2 x 10
<sup>16</sup>
p.o.t. and in agreement with the well-known characteristics of neutrino events in the LAr-TPC. The time of flight difference between the speed of light and the arriving neutrino LAr-TPC events has been analysed. The result δt = 0.3 ± 4.9(stat.) ± 9.0(syst.) ns is compatible with the simultaneous arrival of all events with speed equal to that of light. This is in a striking difference with the reported result of OPERA (OPERA Collaboration, 2011) [1] claiming that high energy neutrinos from CERN arrive at LNGS ∼ 60 ns earlier than expected from luminal speed.</div>
</front>
</TEI>
<affiliations>
<list></list>
<tree></tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Musique/explor/OperaV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000913 | SxmlIndent | more

Ou

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000913 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Musique
   |area=    OperaV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:12-0247589
   |texte=   Measurement of the neutrino velocity with the ICARUS detector at the CNGS beam
}}

Wicri

This area was generated with Dilib version V0.6.21.
Data generation: Thu Apr 14 14:59:05 2016. Site generation: Thu Oct 8 06:48:41 2020