The September 6 Science has an article entitled "Boxed In," which has this summary:
You'd think physicists would be delighted. In cosmology, satellite observations of the universe repeatedly confirm scientists' picture of its composition and history. In particle physics, the discovery of the Higgs boson and measurements of its properties give equally compelling evidence that their "standard model" of elementary particles and force-generating symmetries explains everything it's supposed to. And that's the problem: It's hard to develop new and better models when the old ones stubbornly refuse to break down. To keep progress from grinding to a halt, physicists are devising ingenious new experiments aimed at shooting holes in their reigning theories—but no one knows which of them, if any, will hit the mark.
Associated with the article is a short piece entitled "The Unruly Neutrino," which has this summary:
Contrary to the assumptions of the standard model, particles called neutrinos have mass and, thus, behave in ways forbidden by the theory. So neutrinos provide particle physicists with their only glimpse so far of physics beyond the standard model. Even in this area, however, a generally accepted picture is emerging of how, like chameleons changing colors, the three "flavors" of neutrinos morph into one another as they zing along at near light speed.
Browsing the Relative Index in WebDewey for "neutrinos" yields:
The Relative Index entry for neutrinos has no subheading; hence the interdisciplinary number for neutrinos is 539.7215 Neutrinos. In the upward hierarchy for 539.7215 are 539.721 Specific kinds of subatomic particles and 539.72 Particle physics; ionizing radiation (with the Relative Index entry for "particle physics" pointing to 539.72). Hence 539.7215 Neutrinos is also the particle physics number for neutrinos. An example of an interdisciplinary work on neutrinos classed in 539.7215 is Neutrinos in Particle Physics, Astrophysics and Cosmology. That work has "Neutrinos" as its first LCSH and "Neutrino astrophysics" as its second LCSH. A work classed in 539.7215 that gives more emphasis to particle physics is Neutrinos: Properties, Sources, and Detection.
What about cosmology? Browsing the Relative Index for "cosmology" yields these entries (plus others):
The record for 523.1 The universe, galaxies, quasars has the class-here note: "Class here cosmology." Works about neutrinos that emphasize cosmology may nevertheless be broad enough to be classed in the interdisciplinary number for neutrinos 539.7215 Neutrinos. An example is Neutrino Cosmology. It has the LCSH "Neutrinos," "Neutrino astrophysics," and "Cosmology."
What about works that emphasize neutrino astrophysics? Browsing the Relative Index for "astrophysics" yields:
The record for 523.019 Molecular, atomic, nuclear physics, a subdivision of 523.01 Astrophysics, has the add note: "Add to base number 523.019 the numbers following 539 in 539.1-539.7, e.g., cosmic rays 523.0197223." To use the WebDewey number building tool to build a number for neutrino astrophysics, begin by clicking START in the record for 523.019. Then find the record for 539.7215 Neutrinos and click ADD in the Create-built-number box. Here is the resulting summary for the built number 523.0197215 Neutrinos—astrophysics:
An example of a work classed in 523.0197215 Neutrinos—astrophysics is Neutrino Astrophysics: A Research Briefing; it has "Neutrino astrophysics" as first LCSH.
For instructions on use of the number building tool, see the Dewey Training Courses site.
Incidentally, with respect to the discovery of the Higgs boson, the other topic of particle physics mentioned above in the summary of the article entitled "Boxed In": interdisciplinary works on bosons, including the Higgs boson, are classed in 539.721 Specific kinds of subatomic particles; see previous blog entry.