The discussion revolves around the concept of an anti-Higgs boson within the framework of the Standard Model (SM) of particle physics. Participants explore whether such a particle could exist, its implications, and the properties of the Higgs boson itself, including its role as an antiparticle and its interactions.
Participants do not reach a consensus on the existence of an anti-Higgs boson, with multiple competing views presented regarding the properties and interactions of the Higgs boson.
Some claims rely on interpretations of the Higgs boson's properties, such as its status as an antiparticle and its interactions, which remain unresolved in the discussion. The implications of weak isospin and weak hypercharge are also debated without clear conclusions.
Higgs bosons are their own antiparticle and would annihilate each other.Jim said:I naively imagine that a higgs & an a-higgs can annihilate by photon emission, similar to all SM particles. Is this a-higgs permitted by the SM & does the discovery of the higgs strongly suggest the a-higgs exists ?
Way above my head, the Wikipedia article sites an NPR interview with Sean Carroll as its source for this info:nikkkom said:This is an interesting question.
Let me restate it like this: what is the weak isospin and weak hypercharge of Higgs boson?
If they are zero, then how Higgs field with these charges being zero manages to constantly flip e.g. right-chirality electron into left-chirality electron - eR and eL have _different_ weak isospin and weak hypercharge, right?
If they are nonzero, then Higgs particle can't be its own antiparticle.
There's not an anti-Higgs. It depends on the particle. Sometimes particles are essentially their own anti-particle. Like the photon doesn't have a separate anti-particle, and neither does the Higgs.
Even if wikipedia were an accepted source under the Physics Forums rules (and it's not), that wikipedia article doesn't support your claim. Yes, it says that the Higgs boson is its own antiparticle, but it does not say anything about annihilation. The same is true of the NPR interview (which is also not peer-reviewed).stoomart said:Higgs bosons are their own antiparticle and would annihilate each other.
https://en.m.wikipedia.org/wiki/Higgs_boson#Properties_of_the_Higgs_boson
I assumed it would not be an interaction we could replicate, more like something going on around the time of inflation.mfb said:If it would be possble to produce two Higgs bosons on a collision course, Higgs+Higgs -> something else is a possible process, but the Higgs itself decays to "something else" extremely fast, therefore that process has no relevance. Calling it annihilation is a bit of a stretch anyway.