Measurement of the velocity of neutrinos from the CNGS beam with the Large Volume Detector - INSPIRE

DataBETA

Measurement of the velocity of neutrinos from the CNGS beam with the Large Volume Detector

LVD

Collaboration

•

N.Yu. Agafonova
(
- Moscow, INR
)

Aug, 2012

5 pages

Published in:

Phys.Rev.Lett. 109 (2012) 070801

e-Print:

1208.1392 [hep-ex]

DOI:

10.1103/PhysRevLett.109.070801

View in:

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Abstract: (arXiv)

We report the measurement of the time-of-flight of ~17 GeV muon neutrinos on the CNGS baseline (732 km) with the Large Volume Detector (LVD) at the Gran Sasso Laboratory. The CERN-SPS accelerator has been operated from May 10th to May 24th 2012, with a tightly bunched-beam structure to allow the velocity of neutrinos to be accurately measured on an event-by-event basis. LVD has detected 48 neutrino events, associated to the beam, with a high absolute time accuracy. These events allow to establish the following limit on the difference between the neutrino speed and the light velocity: -3.8 x 10-6 < (v-c)/c < 3.1 x 10-6 (at 99% C.L.). This value is an order of magnitude lower than previous direct measurements.

14.60.Lm
06.30.Gv
29.40.Mc
neutrino: velocity: measured
CNGS
time-of-flight
Gran Sasso
CERN SPS
neutrino/mu: beam
neutrino/mu: mass: lower limit

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