Neutrinos Definition and 331 Threads

I am wondering how to calculate how far a neutrino would have to pass through a substance for it to have a probability P of interacting at least once. Water, for instance, has a density of 1 g / cm^3; using Avogadro's number I think this means that there is about 6.02 x 10^29 protons and/or...

Is there that much space in between all the electrons, protons, and neutron that this is likely? The only explanation that I can think of is that the neutrinos are in a different region of n-dimensional space-time and the fact that they pass through the Earth is merely a geometric illusion...

Okay, I admit that I laughed out loud when I saw this title at the Cern Courier, but it wasn't laughter at the observation being wrong... Are neutrinos seasonal? http://www.cerncourier.com/main/article/39/1/6 Carl

Perhaps I'm simply missing something, but it seems to me that the "evidence" to support the belief that neutrinos change "flavor" is very weak at best. From my perspective, the current argument amounts to "we don't receive every item we sent, so one of them must have changed into a toad"...

Greetings, I read that there are 3 types of neutrinos, muon, tau and electron. Current theory supported by experiments at SuperKamiokande Detector and 'SNO' suggest that neutrinos can change flavor in the order of electron--> muon--->tau. Also, most now believe that neutrinos are...

Abstract: Since 1982 the Koide mass relation has provided an amazingly accurate relation between the masses of the charged leptons. In this note we show how the Koide relation can be expanded to cover the neutrinos, and we use the relation to predict neutrino masses. Full paper attached...

I am trying to understand the PBS NOVA ‘The Ghost Particle’ shown Tuesday 28 February 2006. http://www.pbs.org/wgbh/nova/neutrino/ Question 1 - When neutrinos pass through the Earth interacting in a statistically predictable manner, is this an example of quantum tunneling conforming to a...

i heard that neutrino isn't made of quarks, it almost has no mass but it has a anti matter. what is the difference between a neutrino and its anti particle? what parity is?:confused: thanks in advance

Hey, I am just asking a few questions about neutrinos... Are they affected by gravitational, electromagnetic, or nuclear forces? In other words is there any means of containment for neutrino particles? Also how would one generate neutrinos... if its possible?

Neutrinos are emitted during the beta-decay process. Neutrinos definitely have spin. Do neutrinos have mass? Most texts say neutrinos have zero or negligible rest mass. But Neutrinos travel with the speed of light. So how can any particle with finite mass travel with the speed of light? If so...

If i remember correctly from astrophysics. Neutrinos are said to be relatively uninteractive. Now is that statement an theory or a fact? whereby "fact" i mean that we see it pass through without interacting and "theory" we observe the effects of 1 neutrino going into a system and coming...

Hi, If neutrinos have mass, can "right-handed" and a "left-handed" change to each other? Why we can only find left-handed ones? Thank you. Wang Yi

Compute the flux of neutrinos arriving at Earth, i.e. the number of neutrions that land on each square meter of Earth's surface each second. The question is referring to neutrinos created in the photon-photon chain in the Sun. I already computed that the Sun releases 1.78*10^{38} neutrinos...

neutrinos and their speed Hi. http://hitoshi.berkeley.edu/neutrino/neutrino.html Doeas this mean that neutrinos are faster than light?

some theorist predicts proton can decay, since the decay of proton does not violate any fundemantal conservation law. My question is, could neutrino decay? How come I have never heard of anyone say neutrino could decay?

Do neutrinos have mass and spin?

I have two questions about neutrinos that I haven't been able to figure out: 1. The evidence seems to indicate that neutrinos have rest mass. Since it is invisible to charge and electromagnetic fields and, apparently, gluon fields, how does it interact with matter at all? I think it may have...

How are the electron neutrino, the muon neutrino and the tau neutrino different from each other (except for the leptonic number they carry)? I heard they BEHAVE like their associated Lepton (el., muon, tau). If so, in what way? Thanks.

What do people think of the idea that the type of matter a neutrino passes through can affect it's probability of being a certain flavour/colour. eg, through rock it is more likley to be one colour, through air it is more likley to be another colour.

How many are there in a cubic in inch?

I bumbed in such event in on book written in middle 80's. Does anyone know anything of such phenomena? Has that theory been killed or is there any info available of it anywhere?? Oh joy... I'm writing an essay of neutrinos, and I am really lost.. :| Oh, and another question... Any other...

Hey, guys! I have exciting news about neutrinos. Neutrinos are fundamental particles that are neutral in charge and approximately the size of an electron. They come in three favors, and these flavors are: electron neutrion, muon neutrino, and tau neutrino. There symbols are...

i wanted to find out what percent of C neutrinos travel at. so i got on the web and found pages quoting 'light speed' and 'almost light speed'. my understanding was that they travel slower than light becuase they change flavour as they travel, (they couldn't change if going at light...

Now that it is becoming apparent that neutrinos are massive (albeit rather small), I have a question that bears upon the accepted symmetry framework as applied to weak interacton. We know from weak decay (say Beta) that there is parity asymmetry, that the resultant neutrinos are polarized...

I'm a newb so forgive me if this question is ridiculous. In theory(cuz we have no idea of really knowing) how many neutrinos are traveling through the Earth at any given time. Or better yet, how many are traveling through let's say a 1 m x 1m square in any arbitrary position on earth. I'm not...

Hi guys just had a question. I know about neutrinos and how they act - their being able to pass through matter leaving it as it was but my question was how are what are the basics of neutrinos are they antimatter particles of some particle? Someone please enlighten me, thanks.

hi, Before i begin i am not sure where to put this post wether here or in the general section. Is Newtons 3rd law broken? Neutrinos don't follow this rule. the neutrinos can just pass through particles. so don't they break the 3rd rule? :confused:

Do neutrinos experience tunneling, and thus we think they have no mass yet they do because they are tunneling? Pete

the cosmic photon background (CMB) evidently contains a lot of information about gravity and the structure of the universe and it is expected that when instruments get good enough we will see a cosmic neutrino background (CNB) consisting of even older particles what do you know about this...

What are the characteristic differences between the two? I was under the impressions that antimatter and matter had the same characteristics except for an opposite charge. But a neutrino has no charge. Thanks, Glenn

Well. Do they have mass or not? How is the investigation nowadays? Anybody knows?