The concept of an "anti-particle" arises from the framework of quantum field theory, where particles and anti-particles are related by certain symmetries. In the case of the Higgs boson, it does have a corresponding anti-particle, often referred to as the anti-Higgs boson or the Higgs anti-particle.
The reason why we don't typically hear about the anti-Higgs boson is because it is relatively short-lived and challenging to produce and detect. The Higgs boson was discovered at the Large Hadron Collider (LHC) in 2012 through high-energy particle collisions. These collisions allowed for the creation of Higgs bosons, which were then detected through the analysis of their decay products.
Both the Higgs boson and its anti-particle can be produced in these collisions, but due to the Higgs boson's short lifetime, it quickly decays into other particles. The detection of the Higgs boson at the LHC focused on its specific decay signatures, and distinguishing between the Higgs boson and its anti-particle is technically challenging.
However, it's important to note that the existence of the Higgs boson's anti-particle is a fundamental aspect of the theory. In quantum field theory, particles and anti-particles are associated with opposite electric charges, but the Higgs boson itself has no electric charge. Therefore, the distinction between the Higgs boson and its anti-particle is not as pronounced as it is for other particles, like electrons and positrons.
In summary, the Higgs boson does have an anti-particle, but due to its short lifetime and technical challenges in detection, we often focus on the Higgs boson itself when discussing experimental observations and research.