Sentences with phrase «electron neutrinos»

The group did spot an odd uptick in the number of electron neutrinos at lower energies — 369 events instead of 273.

On Wednesday, the team announced that six of the muon neutrinos that started off at J - PARC appear to have transformed into electron neutrinos before reaching Super-Kamiokande, where they were detected.

The finding was bolstered in 2001 when the team behind the Sudbury Neutrino Observatory (SNO) in Ontario, led by McDonald, announced that they had seen a similar effect in neutrinos coming from the sun, which produces electron neutrinos in fusion reactions in its core.

However, the result is still tentative because of the small number of events seen and because of the possibility — considered rare — that muon neutrinos could be misidentified as electron neutrinos.

One detector in each pair would be built from iron and would largely measure muon neutrinos while the other would contain liquid argon and mainly detect electron neutrinos, which the muon variety would oscillate into.

The sun's core should produce electron neutrinos in a range of energies, but detectors see fewer high - energy ones than predicted.

According to the Italian - led experimental collaborations behind the proposal — ICARUS and NESSiE — the simultaneous measurement of muon and electron neutrinos at both near and far detectors would provide much stronger evidence for or against the existence of sterile neutrinos than is possible with just a single detector like the one used for LSND.

If neutrinos have a mass, this could also explain why experiments on Earth detect so few electron neutrinos from the Sun.

In doing so, Daya Bay researchers searched for a faster, smaller oscillation imposed on top of the longer, slower one that accounts for the disappearance of electron neutrinos from the sun, which is dominated by a different mixing angle.

If electron neutrinos tend to have the lightest mix of masses, the added heaviness from its earthly interactions would make it change to muon neutrinos at a higher rate because it would «mix» or «overlap more» with the muon masses, as Messier puts it, referring to the wavelike behavior of these particles.

The group reported no overall increase in the rate of electron neutrino events for muon neutrinos of different energies, which would have bolstered the LSND case for neutrinos switching flavors.

Called the NuMI Off - axis Electron Neutrino Appearance experiment, or NOvA, the project relies on a 15,400 - ton detector containing 3 million gallons of a liquid solution with a material known as a scintillator.

So in the very early Universe, some 17 keV neutrinos could have been transformed into electron neutrinos before they could decay, adding to the pressure of the big bang.

For many years the number of solar electron neutrinos detected on Earth was only a third of the number expected, according to theories describing the nuclear reactions in the Sun.

The sun was thought to produce electron neutrinos only, and if these particles were somehow morphing into the other two flavours as they travelled through space, it could explain the anomaly.

The laws of physics may permit a neutrino with a mass to change from one type into another, so electron neutrinos may simply transform themselves into undetectable muon or tau neutrinos before they fly across the 150 million kilometres of space between the Sun and the Earth.

The liquid was chosen principally because it contains large numbers of protons, with which electron neutrinos would occasionally interact to produce a neutron and a positron.

The beam produces electron neutrinos directly at a certain rate; a higher frequency would signal something unanticipated.

An earlier experiment, called the Liquid Scintillator Neutrino Detector (LSND) carried out by the Los Alamos National Laboratory (LANL) in New Mexico, found an excess of electron neutrinos after bombarding a target with antimuon neutrinos (the muon neutrino's antimatter counterpart).

Researchers with the T2K experiment found that muon neutrinos morphed into electron neutrinos more often than expected, while muon antineutrinos became electron antineutrinos less often.

The three flavors of neutrinos include electron neutrinos, which are born in nuclear reactions; muon neutrinos, which emerge from the decay of particles called pions; and tau neutrinos, which have been generated in particle collisions at accelerator labs.

Another indication comes from a pair of experiments started in the 1990s in Russia and Germany that was designed to sense electron neutrinos from the sun.

This is the first time anyone has seen electron neutrinos show up in a beam of particles that started off as muon neutrinos.

Scientists could then pinpoint the trajectory of the particle, allowing them to better distinguish between electron neutrino interactions and other events and thus determine whether there really is an excess of oscillations at low energies.

Near the end of Professor Davis» life, a large team of researchers (~ 178 coauthors) reported that solar electron neutrinos oscillate away before they reach our detectors.

Physicists with the SNO looked at neutrinos from the sun, all of which start out as electron neutrinos.

Both experiments used detectors made of gallium, and when researchers calibrated them with radioactive sources, they counted too few electron neutrinos, suggesting they were quickly morphing into sterile ones.

There physicist Raymond Davis built an experiment using 400,000 litres of cleaning fluid to detect electron neutrinos, one of the three types of neutrino described by the standard model.

But the collaboration saw six such events, evidence that some of the missing muon neutrinos had turned into electron neutrinos.»

«Similarly, if oscillations did not occur, scientists expected to see only one electron neutrino appearance (due to background interactions).

They know that the fusion processes at its heart produce electron neutrinos — uncharged relatives of the electron, and one of the three known types of neutrino.

Scientists will extract information about neutrino oscillations — transmutations of electron neutrino, muon neutrino and tau neutrino «flavors» from one to another.

When an electron neutrino strikes a carbon nucleus in the oil, it emits a flash of bluish light.

There are three known types (flavors) of neutrinos: electron neutrino, muon neutrino and tau neutrino, named after their partner leptons in the Standard Model.

It has now detected the arrival of 28 electron neutrinos, showing direct signs of this type of neutrino oscillation, the team announced last week at a physics meeting in Stockholm, Sweden.

En route, some muon neutrinos transformed into electron neutrinos.

That came a few years later in 2001, when Arthur McDonald of the Sudbury Neutrino Detector in Ontario, Canada, announced that electron neutrinos could also change into the two other types.

But what about the electron neutrinos?

If the electron neutrino has a very small mass, it may mean that the tau neutrino has a very large mass.

This is the detected pattern of an electron neutrino candidate event observed by Super-Kamiokande.

Recently, the T2K experiment has finished collecting another set of data that has doubled the amount of data available in the electron neutrino configuration, and its results are expected to be presented later this year.

On the way, the neutrinos and anti-neutrinos spontaneously change «flavor» from muon neutrinos or anti-neutrinos, to electron neutrinos or anti-neutrinos.

The first data set by T2K was published in April, and detected 32 electron neutrinos and 4 electron anti-neutrinos.

In a possible sighting of an electron neutrino at the Super-Kamiokande detector in Hida, Japan (shown), colored spots represent sensors that observed light from the interacting neutrino.

These interactions tend to produce large quantities of neutrinos of the muon flavor (the other two flavors are electron neutrinos and tau neutrinos).

So rather than, say, a 10 percent chance of an electron neutrino turning into a muon neutrino, for example, physicists wonder if the odds are lower that an electron antineutrino turns into a muon antineutrino.

Here, too, the experiment detected a different mix of neutrinos than expected — in this case, fewer electron neutrinos and more taus and muons.

Two of those masses are likely to identify as electron neutrinos a significant portion of the time, and one mass only infrequently comes up as electron neutrino, says Messier.

The NOvA neutrinos will start off as muon flavor, but then do their typical transforming act into electron neutrinos.