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

Identifieur interne : 000439 ( PascalFrancis/Curation ); précédent : 000438; suivant : 000440

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

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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.
pA  
A01 01  1    @0 0370-2693
A02 01      @0 PYLBAJ
A03   1    @0 Phys. lett., Sect. B
A05       @2 713
A06       @2 1
A08 01  1  ENG  @1 Measurement of the neutrino velocity with the ICARUS detector at the CNGS beam
A17 01  1    @1 ICARUS Collaboration @3 INT
A20       @1 17-22
A21       @1 2012
A23 01      @0 ENG
A43 01      @1 INIST @2 9425B @5 354000509372760040
A44       @0 0000 @1 © 2012 INIST-CNRS. All rights reserved.
A45       @0 17 ref.
A47 01  1    @0 12-0247589
A60       @1 P
A61       @0 A
A64 01  1    @0 Physics letters. Section B
A66 01      @0 GBR
C01 01    ENG  @0 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.
C02 01  3    @0 001B00
C02 02  3    @0 001B20
C02 03  3    @0 001B10
C03 01  3  FRE  @0 Neutrino @5 26
C03 01  3  ENG  @0 Neutrinos @5 26
C03 02  3  FRE  @0 CERN @5 27
C03 02  3  ENG  @0 CERN @5 27
C03 03  3  FRE  @0 Faisceau neutrino @5 28
C03 03  3  ENG  @0 Neutrino beams @5 28
C03 04  X  FRE  @0 Intensité @5 29
C03 04  X  ENG  @0 Intensity @5 29
C03 04  X  SPA  @0 Intensidad @5 29
C03 05  3  FRE  @0 Faisceau proton @5 30
C03 05  3  ENG  @0 Proton beams @5 30
C03 06  3  FRE  @0 Collisionneur LHC @5 31
C03 06  3  ENG  @0 LHC collider @5 31
C03 07  3  FRE  @0 Vitesse lumière @5 32
C03 07  3  ENG  @0 Light velocity @5 32
C03 08  3  FRE  @0 Particule sans masse @5 33
C03 08  3  ENG  @0 Massless particles @5 33
C03 09  3  FRE  @0 Particule élémentaire @5 34
C03 09  3  ENG  @0 Elementary particles @5 34
N21       @1 191
N44 01      @1 OTO
N82       @1 OTO

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Pascal:12-0247589

Le document en format XML

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<sup>16</sup>
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