Interference effects in gg → H → Zγ beyond leading order
Physics Letters B, ISSN: 0370-2693, Vol: 851, Page: 138596
2024
- 3Citations
- 1Mentions
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Metrics Details
- Citations3
- Citation Indexes3
- Mentions1
- News Mentions1
- 1
Most Recent News
Research Conducted at University of Oxford Has Provided New Information about Physics (Interference Effects In Gg- H- Zy Beyond Leading Order)
2024 SEP 23 (NewsRx) -- By a News Reporter-Staff News Editor at Ivy League Daily News -- Current study results on Physics have been published.
Article Description
The ATLAS and CMS collaborations at the LHC have recently announced evidence for the rare Higgs boson decay into a Z boson and a photon. We analyze the interference between the process gg→H→Zγ induced by loops of heavy particles, which is by far the dominant contribution to the signal, and the continuum gg→Zγ QCD background process mediated by light quark loops. This interference modifies the event yield, the resonance line-shape and the apparent mass of the Higgs boson. We calculate the radiative corrections to this interference beyond the leading-order approximation in perturbative QCD and find that, while differing numerically from the corresponding effects on the more studied gg→γγ signal, they are generally rather small. As such, they do not impact significantly the interpretation of the present measurements of the H→Zγ decay mode.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0370269324001540; http://dx.doi.org/10.1016/j.physletb.2024.138596; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85188720520&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0370269324001540; https://dx.doi.org/10.1016/j.physletb.2024.138596
Elsevier BV
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