23.2.2012: Warp Zero for Neutrinos

Well, it would have been to great ... to have found some superluminal particles we already know: The Neutrinos.

The early results of the OPERA [1] experiment -- measuring the (statistical) time difference between the creation of neutrinos in an SPS beam puls and the identification of (some of) their interactions in the OPERA detector [2] at Gran Sasso would have been the scientific revolution of the early 21nd century [3].

Giulia Brunetti's Phd thesis [4] is done very carefully, but while watching the initial presentation of Dario Autiero I already had some doubts about the networking setup and potential systematical effects which would impact the measurement resulting in the analyzed time shift. In particular, it was claimed, that the network is a Gigabit network. However, looking at the (not really) published network infrastructure [5], it becomes apparent, that this not (entirely) true. The used Cisco 2950 switches provide a FastEthernet client-link only (and work in store-and-forward mode).

Thus, I offered a latency-time analysis for the Cisco 2950 switches as bachelor thesis [6]. Actually, the problems of the OPERA network setup are not only apparent for the data analysis chain, but in addition for the network providing the crucial time synchronization [7] as well.

It seems, the superluminal neutrinos are reduced to Warp Zero and the observed results will meet the same fate as those for the Pentaquarks [8].

 


[1] cdsweb.cern.ch/record/1384486
[2] opera_tof.png
[3] arxiv.org/abs/1109.4897k
[4] operaweb.lngs.infn.it:2080/Opera/phpmyedit/theses-pub.php
[5] opera_network.png
[6] www.fehcom.net/fh-frankfurt/theses.html
[7] news.sciencemag.org/scienceinsider/2012/02/breaking-news-error-undoes-faster.html?ref=hp
[8] en.wikipedia.org/wiki/Pentaquark