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Discussion and Debate
Discussion and Debate
Physical & Life Sciences
Elusive, baffling neutrinos, and unknown physics
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<blockquote data-quote="Halbhh" data-source="post: 76402556" data-attributes="member: 375234"><p>[USER=352921]@sjastro[/USER]</p><p>[USER=241055]@FrumiousBandersnatch[/USER]</p><p>[USER=438641]@pacomascarot[/USER]</p><p></p><p>I think this article is interesting:</p><p></p><p><em>"One solution, <a href="https://arxiv.org/abs/0910.1657" target="_blank">proposed earlier</a> by the Italian physicist Bruno Pontecorvo, was that neutrinos are shape-shifters. .... In time, theorists homed in on a description of how neutrinos oscillate between types depending on their energy and travel distance that matched the data coming from the sun and sky.</em></p><p><em></em></p><p><em>But the idea of shape-shifting neutrinos was hard for many physicists to stomach. The math only works if each of the three neutrino species is a quantum mechanical mix of three different masses — in other words, shape-shifting means neutrinos must have mass. But the Standard Model of particle physics, the well-tested set of equations describing the known elementary particles and forces, unequivocally deems neutrinos massless. ...</em></p><p><em>...</em></p><p><em>...</em></p><p><em><strong><span style="font-size: 15px">Death of the Sterile Neutrino</span></strong></em></p><p><em>Anomaly chasers had come to a fork in the path, and the signs pointed in opposite directions. More evidence supported the existence of three neutrinos than four. Then another blow for sterile neutrinos came from the Planck space telescope. </em></p><p><em>... (continues...)</em></p><p><em></em></p><p><a href="https://www.quantamagazine.org/neutrino-puzzles-point-to-the-possibility-of-multiple-missing-particles-20211028/" target="_blank">Is the Great Neutrino Puzzle Pointing to Multiple Missing Particles? | Quanta Magazine</a></p></blockquote><p></p>
[QUOTE="Halbhh, post: 76402556, member: 375234"] [USER=352921]@sjastro[/USER] [USER=241055]@FrumiousBandersnatch[/USER] [USER=438641]@pacomascarot[/USER] I think this article is interesting: [I]"One solution, [URL='https://arxiv.org/abs/0910.1657']proposed earlier[/URL] by the Italian physicist Bruno Pontecorvo, was that neutrinos are shape-shifters. .... In time, theorists homed in on a description of how neutrinos oscillate between types depending on their energy and travel distance that matched the data coming from the sun and sky. But the idea of shape-shifting neutrinos was hard for many physicists to stomach. The math only works if each of the three neutrino species is a quantum mechanical mix of three different masses — in other words, shape-shifting means neutrinos must have mass. But the Standard Model of particle physics, the well-tested set of equations describing the known elementary particles and forces, unequivocally deems neutrinos massless. ... ... ... [B][SIZE=4]Death of the Sterile Neutrino[/SIZE][/B] Anomaly chasers had come to a fork in the path, and the signs pointed in opposite directions. More evidence supported the existence of three neutrinos than four. Then another blow for sterile neutrinos came from the Planck space telescope. ... (continues...) [/I] [URL='https://www.quantamagazine.org/neutrino-puzzles-point-to-the-possibility-of-multiple-missing-particles-20211028/']Is the Great Neutrino Puzzle Pointing to Multiple Missing Particles? | Quanta Magazine[/URL] [/QUOTE]
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Elusive, baffling neutrinos, and unknown physics
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