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I presume you mean, "What WAS the Solar neutrino problem?"
Our understanding of our Sun's core predicted a certain number of neutrinos would hit our Earth per second. Measurements of neutrinos from our Sun were substantially different from this number. The scientists who did the theories said the scientists doing the measurements were wrong; and vice versa -- an argument that went back and forth for forty years.
We now know that neutrinos do decay, thus perfectly explaining the lack of neutrinos that are measured as coming from our Sun.
The scientists who write the theories are busy trying to explain neutrino decay.
What else can I help you with?
How can neutrino oscillation explain the solar neutrino problem?
The solar neutrino problem relates to the discrepancy between the proportions of the different flavours of neutrinos emitted by the sun in the theoretical model as opposed to experimental measurements. Whilst the sun primarily emitts electron neutrinos, neutrino observatories such as SNO+ detected neutrinos in roughly equal proportions of the three flavours; furthermore the quantity of electron neutrinos detected was less than the theoretically predicted value. Both of these can be explained by neutrino oscillation - in which the neutrinos alter their mass to change their flavour (ie. an electron neutrinos gain mass to change to a muon neutrino). This would also explain the relative lack of electron neutrinos, thus solving the solar neutrino problem!
When was Dolar Mahmud born?
Dolar Mahmud was born in 1988.
When was Davorin Dolar born?
Davorin Dolar was born in 1921.
When did Davorin Dolar die?
Davorin Dolar died in 2005.
When was Dolar Popat born?
Dolar Popat was born in 1953.
When was Mladen Dolar born?
Mladen Dolar was born in 1951.
How was the Solar neutrino problem solved?
The problem was that the Sun should output a lot more electron neutrinos then were measured. This meant that the model describing the interior of the Sun would be wrong, but it was working very well in predicting other things. It was finally solved when something called neutrino oscillation was discovered. It turned out that (this might be a bit technical) the interaction state of a neutrino was not equal to its mass or propagation state. In short, this meant that electron neutrino's could become muon or tau neutrino's after a while (and change back again after that). After this people began looking for muon and tau neutrinos coming from the Sun and together with the electron neutrino number they added up to the amount the Solar model predicted. The problem was thus solved; the Sun DOES output more electron neutrino's but some of these change into muon or tau neutrinos before they reach the Earth, and since we were initially only looking for electron neutrinos we missed some.
When did Janez Krstnik Dolar die?
Janez Krstnik Dolar died in 1673.
What is an antielectron neutrino?
An antielectron neutrino is an antileptonic elementary particle - the antiparticle of an electron neutrino.
What is an antimuon neutrino?
An antimuon neutrino is an antileptonic elementary particle which is the antiparticle of a muon neutrino.
What is dolar?
Dolar is a small municipality located in Spain. It has a population of about 576 people and is located in the province of Granada.
What are the three particles in the lepton family?
They aren't 3 they are in fact 12 if you count anti matter as a separate particle from matter. Electron, muon, tau, electron neutrino, muon neutrino and tau neutrino. The same apply to anti matter positron, anti muon, anti tau, postrin neutrino, anti muon neutrino, and anti tau neutrino.
