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elduderino
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What are flavor arguments that prevent a gluon from decaying into quark and photon, or anti-quark and photon, etc?
Aren't their non-pertubative effects like "electroweak instantons" which can induce baryon- and lepton-number violation?Morgoth said:tom.stoer for what I know in StandarModel B and L numbers are totally correct.
tom.stoer said:Aren't their non-pertubative effects like "electroweak instantons" which can induce baryon- and lepton-number violation?
Morgoth said:i guess but they are not part of StandarModel. One coming in my mind almost immediately is the neutrinoless double beta decay- however it has not being observed.
Yang-Mills instantons and theta-vacuum tunneling are part of the SM, neutrinoless beta decay isn't.Morgoth said:i guess but they are not part of StandarModel. One coming in my mind almost immediately is the neutrinoless double beta decay- however it has not being observed.
chrispb said:Gamma -> W+ W- is indeed an induced coupling in the SM. Alternatively, you could imagine a W+ radiating off a Gamma; W+ -> W+ Gamma. The W+ carries electric charge, and consequently it couples to the photon.
kurros said:So anyway, any vertex with two bosons and a fermion is therefore forbidden for this spacetime reason. You cannot start from s_z=-1,0,+1, subtract +/-0.5 units of angular momentum (spit out a fermion), and end up with another integer.
At least this seems to make sense to me. I never thought about it before this though. Also I can't think of a counter-example :p.
Gluons are the particles responsible for holding quarks together in a nucleus. They are considered to be the "force carriers" of the strong nuclear force. As such, they are not able to decay into quarks and photons because they do not carry electric charge, which is necessary for the decay process to occur.
No, gluons are considered to be stable particles and do not decay into other particles. This is because they are massless and do not have enough energy to break apart into other particles.
When a gluon interacts with a quark and a photon, it does not decay into these particles. Instead, it will either be absorbed or emitted by the quark, causing a change in its color charge. This process is known as gluon exchange and is responsible for the strong nuclear force.
Yes, there is strong evidence from experiments such as the Large Hadron Collider that support the idea that gluons do not decay into quarks and photons. The observed behavior of gluons and their role in the strong nuclear force is consistent with this theory.
There are some theoretical models that propose the existence of particles called "gluinos" which are the supersymmetric partners of gluons. In these models, gluinos are able to decay into quarks and photons. However, there is currently no experimental evidence to support the existence of gluinos.