In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

The electron dipole moment of this particle is at most three times ten to the negative 26th, and would violate CPT-symmetry if it is non-zero. This particle has a half-life of 881 seconds, and can break up into a proton, an electron and an electron antineutrino via beta decay. This particle is composed of one (*) up and two down quarks, and nuclear fission is initiated by the bombardment of this particle. The number of this particle dictates what isotope an atom is, and they have mass roughly equal to that of a proton. James Chadwick discovered, for ten points, what particle found in the nucleus, which, as its name suggests, has a net charge of zero
Science

It exists because of electron degeneracy pressure; as electrons are compressed closer together, more exist per unit volume and must take on higher energy levels as mandated by the Pauli-exclusion principle. A relativistic state equation can be used to calculate it as the radius of a white dwarf decreases with an increase in its mass. Developed shortly before its namesakes theory on black holes, for ten points, name this value of about 1.4 solar masses, the maximum mass of a star which can be supported against gravitational collapse.
Science

In one of this author's short stories, a girl hides a suicide note in a French literature exam and, along with Cynthia, comes back to haunt the narrator. This author of "The Vane Sisters" compared writing fiction to composing a chess problem in his memoir Speak, Memory. He created a prisoner who does not know when he is to be killed for the fictitious crime of "gnostical turpitude", Cincinnatus C, in Invitation to a Beheading. In his magnum opus, the title character is described as "light of my life, fire of my loins" by the narrator, who shoots Clare Quilty. For 10 points, name this author who described Humbert Humbert's sexual obsession with Dolores Haze in Lolita.

Literature