Wednesday 19 March 2025
Physicists have long been fascinated by the Higgs boson, a subatomic particle responsible for giving mass to other particles in the universe. Since its discovery in 2012, scientists have been working tirelessly to understand more about this elusive particle and its properties.
One of the most important aspects of the Higgs boson is its decay process, which determines how it interacts with other particles. In a recent study, researchers explored the role of light quarks – the building blocks of protons and neutrons – in these decays. Specifically, they examined the contributions from up, down, and strange quarks to the decays H → Zγ and H → γγ.
These decays are crucial for understanding the fundamental nature of the universe, as they allow scientists to test theories about the properties of the Higgs boson. Previous studies had suggested that light quark contributions would be negligible due to their small masses compared to the Higgs boson’s mass. However, these findings relied on perturbative calculations, which are only valid at high energies.
The new study used a non-perturbative approach to calculate the light quark contributions, taking into account the chiral limit – a theoretical framework that describes the behavior of quarks in the absence of strong interactions. This allowed the researchers to accurately model the effects of light quarks on the decay processes.
Surprisingly, their calculations revealed that the contributions from up, down, and strange quarks are actually zero for both decays H → Zγ and H → γγ. This means that the previous assumption about negligible light quark contributions was incorrect, at least in the context of these specific decays.
The implications of this finding are significant for our understanding of the universe. By refining our knowledge of the Higgs boson’s properties and decay processes, scientists can better test theories such as the Standard Model of particle physics. This may ultimately lead to a deeper understanding of the fundamental forces that govern the behavior of subatomic particles.
The study also highlights the importance of non-perturbative calculations in quantum field theory. By moving beyond perturbative approaches, researchers can gain insights into complex physical processes that were previously inaccessible. This could have far-reaching implications for our understanding of the universe and its many mysteries.
Cite this article: “Zeroing in on the Higgs Bosons Secrets: New Insights into Light Quark Contributions”, The Science Archive, 2025.
Higgs Boson, Particle Physics, Standard Model, Quantum Field Theory, Decay Process, Light Quarks, Up Quark, Down Quark, Strange Quark, Non-Perturbative Calculations
Reference: A. I. Hernández-Juárez, R. Gaitán, R. Martinez, “Light quark contributions to Higgs decays” (2025).
