What is a lepton? What do quarks have to do with radioactive decay? What do quarks decay into? What is cyclotron maser instability? What do strange quarks decay into? What is a quark in an atom? What is subatomic particle physics?
Onthe one hand, any non-null algebraic intrinsic property of a particle(properties such as Q, magnetic moment already known from classicalphysics, or quantum numbers such as baryonic number A, lepton numberL or flavors, which are meaningful only in the quantum world)reveals that it is distinct...
Why must an even number combine to form a boson? What kind of particles will be accelerated in the Superconducting Super Collider? Which of the following is an example of a baryon? a. meson b. electron c. lepton d. proton The quarks in a particle are confined, meaning individual quarks ...
The idea of “Natural SUSY”, understood as a supersymmetric scenario where the fine-tuning is as mild as possible, is a reasonable guide to explore supersymmetric phenomenology. In this paper, we re-examine this issue in the context of the MSSM including several improvements, such as the mixi...
Decaying warm dark matter and neutrino masses Neutrino masses may arise from spontaneous breaking of ungauged lepton number. Because of quantum gravity effects the associated Goldstone boson - the majo... M Lattanzi,J.W.F.Valle - 《Physical Review Letters》 被引量: 147发表: 2007年 ...
The conservation of electric charge Q is a universal law in the sense that it should be conserved in any interaction, known or yet unknown. However, Q should not be considered as a simple number but as the half sum of two irreducible quantities, the baryon lepton asymmetric number BAL = ...
The general view of physicists is that time started at a specific point about 13.8 billion years ago with the Big Bang, when the entire universe suddenly expanded out of an infinitely hot, infinitely dense singularity, a point where the laws of physics as we understand them simply break down...
If the width indications persist, the new particle is likely to belong to a strongly-interacting sector. We also show how compatibility between Run 1 and Run 2 data is improved by postulating the existence of an additional heavy particle, whose decays are possibly related to dark matter. ...
It is not clear at present if a signal of comparable rate is also seen in the charged cu... G Altarelli,GF Giudice,ML Mangano 被引量: 0发表: 1997年 The effects of combined HERA and recent Tevatron W - > lepton neutrino charge asymmetry data on the MSTW PDFs We examine the effect ...
I suspect there is a bit of a difficulty here. A particle pp and its anti-particle p¯p¯ cancel each other, and if they have a mass mm this results in the production of massless bosons (photons). Quantum number which identify the particle pp are subtracted away by opposite ...