We Just Narrowed Down The Mass of Neutrinos, The ‘Ghost Particles’ That Baffle Physics

A huge experiment to pin down the mass of one of the Universe’s most perplexing particles has put a cap on how big the neutrino might actually be.

Nice one

Tau.Neutrino said:

We Just Narrowed Down The Mass of Neutrinos, The ‘Ghost Particles’ That Baffle Physics

A huge experiment to pin down the mass of one of the Universe’s most perplexing particles has put a cap on how big the neutrino might actually be.

We desperately need to narrow down the mass. To eliminate the inverse hierarchy scenario for starters. How much of the previously allowable regime have they eliminated?

mollwollfumble said:

Tau.Neutrino said:

We Just Narrowed Down The Mass of Neutrinos, The ‘Ghost Particles’ That Baffle Physics

A huge experiment to pin down the mass of one of the Universe’s most perplexing particles has put a cap on how big the neutrino might actually be.

We desperately need to narrow down the mass. To eliminate the inverse hierarchy scenario for starters. How much of the previously allowable regime have they eliminated?

For more, see:

http://www.sfb1258.de/press/detail/katrin-new-limit-on-the-neutrino-mass/ac610efb1cb21499f7194020e2f859f8/

“limited the neutrino mass to a value of less than 1 electron volt (eV). … The analyses now published use a long-established principle for the direct determination of the neutrino mass: During the radioactive decay of tritium, the resulting electron and an (electron) neutrino share the released energy of 18.6 kiloelectron volts. In extremely rare cases, the electron receives practically the entire energy. For the neutrino, the tiny fraction that remains must exceed its rest mass.”

And

https://arxiv.org/pdf/1909.06048

Hmm, not nearly good enough yet to rule out the inverted mass heirarchy. Look at the following figure. There are still a lot of options for an electron neutrino mass (horizontal axis) of 1 ev or below.

mollwollfumble said:

mollwollfumble said:

Tau.Neutrino said:

We Just Narrowed Down The Mass of Neutrinos, The ‘Ghost Particles’ That Baffle Physics

A huge experiment to pin down the mass of one of the Universe’s most perplexing particles has put a cap on how big the neutrino might actually be.

We desperately need to narrow down the mass. To eliminate the inverse hierarchy scenario for starters. How much of the previously allowable regime have they eliminated?

For more, see:

http://www.sfb1258.de/press/detail/katrin-new-limit-on-the-neutrino-mass/ac610efb1cb21499f7194020e2f859f8/

“limited the neutrino mass to a value of less than 1 electron volt (eV). … The analyses now published use a long-established principle for the direct determination of the neutrino mass: During the radioactive decay of tritium, the resulting electron and an (electron) neutrino share the released energy of 18.6 kiloelectron volts. In extremely rare cases, the electron receives practically the entire energy. For the neutrino, the tiny fraction that remains must exceed its rest mass.”

And

https://arxiv.org/pdf/1909.06048

Hmm, not nearly good enough yet to rule out the inverted mass heirarchy. Look at the following figure. There are still a lot of options for an electron neutrino mass (horizontal axis) of 1 ev or below.

Nice graph