Nuclear / Particle Phys Notation quick q spin, parity,J

In summary, there is confusion surrounding the use of ##J^{\pm}##, with some sources stating it represents spin and others stating it represents total angular momentum. There is also confusion with the notation ##P=(-1)^l## and ##P=-1^{spin}##, as well as the notation ##^{J}l_{symbol_s}##, where ##J## represents total angular momentum, ##s## represents spin, and ##l_{symbol}## corresponds to ##s,p,d,f...## and ##l=0,1,2...##. Some examples of this notation, such as ##^{3}D_{1}## and ##^{3}S_{1}##, show conflicting values for
  • #1
binbagsss
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Homework Statement


When we use ##J^{/pm} ## where ##/pm## gives the parity, some sources say ##J## is the spin and some say the total angular momentum, I'm confused !

Also in my notes we have ##P=(-1)^l##, but looking on this thread: https://www.physicsforums.com/threads/quick-question-about-spin-parity-j-p-notation.455873/ it has ##P=-1^{spin}##.?

Also confused with some other notation.. when we write ## ^{J} l_{symbol _s}##, where ##J## is the total angular momentuum, ##s## is the spin and ##l_{symbol}## is ##s,p,d,f..## corresponding to ##l=0,1,2...##.

So looking at things such as ##^{3}D_{1}## I see we have ##l=2, s=1, J=3## and we know ##J=(l+s)+...+##modulus of ##(l-s)##*

BUT looking at ##^{3}S_{1}## we have ##l=0,s=1,J=3## . Which I'm confused how you get ##J=3## from *..

Thanks in advance..
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  • #2
bummp.
 

1. What is spin in nuclear and particle physics notation?

Spin is a fundamental property of particles that describes their intrinsic angular momentum. In nuclear and particle physics, it is represented by the letter "s" and is measured in units of ħ, the reduced Planck constant.

2. What does parity refer to in nuclear and particle physics notation?

Parity is a quantum number that describes the symmetry of a particle's wave function. It can be either even (+1) or odd (-1) and is represented by the letter "P" in nuclear and particle physics notation.

3. How is spin denoted in nuclear and particle physics notation?

Spin is typically denoted by a superscript after the particle's symbol, such as ^1H for a hydrogen atom with spin of 1/2 or ^4He for a helium nucleus with spin of 0.

4. What is the significance of spin and parity in nuclear and particle physics?

Spin and parity play important roles in determining the behavior and interactions of particles. They are often used to classify particles and to understand their properties and interactions with other particles.

5. How is spin and parity notation used in nuclear and particle physics experiments?

Scientists use spin and parity notation in their calculations and experimental setups to understand and analyze the data collected from nuclear and particle physics experiments. It allows them to identify and differentiate between different particles and their properties.

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