Sterile neutrino oscillations in MINOS and hadron production in pC collisions Page: 20 of 237
This thesis or dissertation is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
2.1 First steps in the history of neutrinos
In 1962 at Brookhaven, an experimental group succeeded in directly detecting the second
flavour of neutrino: the v1, . A beam consisting of vl, obtained from a proton beam
colliding on a beryllium target, was produced from 7+_ - + t + v(T). The pions were
allowed to decay and then absorbing material was used to remove the hadrons and muons,
leaving a beam of neutrinos. The Brookhaven experiment observed that only muons were
produced by the interacting neutrinos. Lepton family number was shown to be conserved
by neutrino interactions.
In 1973 the Gargamelle bubble chamber experiment at CERN released results on neu-
trino interactions. A beam of a mixture of ve, v1, and T, was directed towards the bubble
chamber. Neutrinos of lepton flavour I were found [8, 9] to interact through charged current
vi + N ->l + X (2.1)
characterised by a charged lepton I and a hadronic recoil X in the final state. Neutrinos
could also interact through neutral current (NC) processes:
vi + N -> v, + X (2.2)
characterised by only the hadronic recoil X in the final state. While charged current
interactions, mediated by the charged W boson, had already been observed, this was the
first time that neutral current interactions (that had to be mediated by a neutral Z0 boson)
were detected. The collaboration also confirmed that strangeness-changing neutral current
interactions such as:
vN ->vAX (2.3)
vN- vE0X, (2.4)
where X represents a non-strange hadron, were suppressed . The experimental absence
of flavour changing neutral currents, as well as the branching ratio for the decay of K0 ->
Here’s what’s next.
This document can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Thesis Or Dissertation.
Tinti, Gemma Maria & U., /Oxford. Sterile neutrino oscillations in MINOS and hadron production in pC collisions, thesis or dissertation, July 1, 2010; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1015233/m1/20/: accessed April 22, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.