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samsara15
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Any ideas here? For that matter, why should the spin of each particle always be the same? Or can we do no better than to say they do, and that its spin is a fundamental property of what defines each particle?
The spin is a symmetry property under rotation. The pion does have spin, it just happens to be zero, and it's quite an important property !Bob S said:The pion, otherwise called the pi meson, has no spin.
. What about the pi zero, which is its own antiparticle?humanino said:The spin is a symmetry property under rotation. The pion does have spin, it just happens to be zero, and it's quite an important property !
The pion isospin triplet has one given Lorentz spin of course, the same for the 3 members of the isotriplet. They are pseudoscalars. I don't understand the subtlety here.Bob S said:. What about the pi zero, which is its own antiparticle?
are all these things figured out in bubble chambers?and by spin are physicists referring to the spiraling patterns left in bubble chambers? lots of questions because I am uneducatedBob S said:The pion, otherwise called the pi meson, has no spin. The pion is the lightest particle with no spin. There are actually 3 pions, one with zero charge, and two with charge equal to + or - 1 electron (or proton) charge. Their masses are about 1/7 the mass of a proton. They are all unstable (radioactive), and decay into two photons (pi zero) or a muon and a neutrino (pi plus and pi minus).
dangerbird said:are all these things figured out in bubble chambers? by spin are physicists referring to the spiraling patterns left in bubble chambers?
dunno half of what you just said but hmm ok. thanksmalawi_glenn said:NO. LOL.
The reason for why particle make spirals is that charge particles spiral in electric and magnetic fields, it is called the Lorentz Force.
Spin is related to transformation properties under rotation groups.
dangerbird said:dunno half of what you just said but hmm ok. thanks
cragar said:spin is the angular momentum when the particle interacts with other matter.
Elementary particles have spin because they are fundamental units of matter and energy, and spin is one of their intrinsic properties. Much like mass and charge, spin is a fundamental characteristic of particles that cannot be explained by any other underlying factors.
The direction and magnitude of an elementary particle's spin are determined by the particle's properties such as its mass, charge, and interaction with other particles. Spin can also be affected by external factors such as magnetic fields.
Spin is related to the behavior of elementary particles in several ways. For example, it affects how particles interact with each other, how they respond to external forces, and how they decay. Spin is also a key factor in determining the stability and lifetime of particles.
Yes, the spin of an elementary particle can change through certain interactions with other particles. For example, the spin of a particle can change during a collision or decay process, or when it interacts with a magnetic field.
Spin is a crucial concept in particle physics as it helps to classify and distinguish between different types of particles. It also plays a key role in the fundamental forces and interactions between particles, and helps to explain many phenomena observed in nature. In addition, spin is a fundamental aspect of quantum mechanics, which is the theoretical framework that describes the behavior of particles at the subatomic level.