New software models for understanding neutrinos

Jun 06, 2012
New software models for understanding neutrinos
Credit: Thinkstock

Neutrinos are neutral elementary particles created by nuclear reactions such as those in our Sun and other stars. EU researchers sought to advance our understanding of their interactions in deep space with new mathematical models and signal detection methods.

Neutrinos have a long scientific history. The neutrino’s existence was first postulated in 1930 but not demonstrated experimentally until nearly 25 years later. Soon thereafter, scientists demonstrated the existence of more than one type of neutrino. These neutrino ‘flavors’ are now referred to as electron neutrinos, muon neutrinos and tau neutrinos.

Subsequently, researchers found experimentally that the number of electron neutrinos arriving from the Sun was less than that predicted theoretically. The discovery of neutrino oscillations, a quantum mechanical phenomenon, explained this discrepancy and, surprisingly, implied that neutrinos do in fact have mass. With a small amount of mass, neutrinos could oscillate among the three different flavours as they travelled through space.

The flavor of a neutrino at any given time is predicted mathematically by probability distributions. Recently, several observed anomalies have suggested a new realm of astrophysics.

European researchers initiated the ‘Theory and astrophysical applications of neutrino flavor evolution’ (Neutrino Evolution) project to use probability densities (a Boltzmann kinetic equation) in order to capture important information about the effect of oscillations and the refractive effect of background medium and collisions.

Such insight will be important in understanding astrophysical phenomena such as dark matter annihilations and emission of neutrinos from collapsed supernovae leading to theories about the early Universe.

Neutrino Evolution scientists developed theoretical models used to study neutrino flavour evolution based on innovative new physics. The freely available software is currently being modified to expand its applicability.

Further work greatly enhanced the possibility of detecting from dark matter annihilations in the invaluable to development of dark matter models.

Continuing research extends previous experiments and attempts to address new questions raised by project developments. With EU funding to top European scientists, some of the mysteries of the Universe may not be so mysterious in the near future.

Explore further: Watching the structure of glass under pressure

add to favorites email to friend print save as pdf

Related Stories

New results confirm standard neutrino theory

Feb 16, 2010

(PhysOrg.com) -- In its search for a better understanding of the mysterious neutrinos, a group of experimenters at DOE’s Fermi National Accelerator Laboratory has announced results that confirm the theory ...

CERN neutrino project on target

Aug 16, 2005

Scientists at CERN announced the completion of the target assembly for the CERN neutrinos to Gran Sasso project, CNGS. On schedule for start-up in May 2006, CNGS will send a beam of neutrinos through the Earth to the Gran ...

Neutrinos change flavors while crossing Japan

Jun 15, 2011

By shooting a beam of neutrinos through a small slice of the Earth under Japan, physicists say they've caught the particles changing their stripes in new ways. These observations may one day help explain why the universe ...

Recommended for you

Watching the structure of glass under pressure

11 hours ago

Glass has many applications that call for different properties, such as resistance to thermal shock or to chemically harsh environments. Glassmakers commonly use additives such as boron oxide to tweak these ...

Inter-dependent networks stress test

14 hours ago

Energy production systems are good examples of complex systems. Their infrastructure equipment requires ancillary sub-systems structured like a network—including water for cooling, transport to supply fuel, and ICT systems ...

Explainer: How does our sun shine?

15 hours ago

What makes our sun shine has been a mystery for most of human history. Given our sun is a star and stars are suns, explaining the source of the sun's energy would help us understand why stars shine. ...

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

vacuum-mechanics
1 / 5 (3) Jun 06, 2012
Neutrinos have a long scientific history. The neutrinos existence was first postulated in 1930 but not demonstrated experimentally until nearly 25 years later. Soon thereafter, scientists demonstrated the existence of more than one type of neutrino. These neutrino flavors are now referred to as electron neutrinos, muon neutrinos and tau neutrinos

The flavor of a neutrino at any given time is predicted mathematically by probability distributions. Recently, several observed anomalies have suggested a new realm of astrophysics.

Neutrino Evolution scientists developed theoretical models used to study neutrino flavour evolution based on innovative new physics. The freely available software is currently being modified to expand its applicability.

Then how about its physical model? May be this unconventional view could give some hint.

http://www.vacuum...mid=9=en