Higgs Working Group Report of the Snowmass 2013 Community Planning Study (1310.8361v2)

Abstract: This report summarizes the work of the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass). We identify the key elements of a precision Higgs physics program and document the physics potential of future experimental facilities as elucidated during the Snowmass study. We study Higgs couplings to gauge boson and fermion pairs, double Higgs production for the Higgs self-coupling, its quantum numbers and $CP$-mixing in Higgs couplings, the Higgs mass and total width, and prospects for direct searches for additional Higgs bosons in extensions of the Standard Model. Our report includes projections of measurement capabilities from detailed studies of the Compact Linear Collider (CLIC), a Gamma-Gamma Collider, the International Linear Collider (ILC), the Large Hadron Collider High-Luminosity Upgrade (HL-LHC), Very Large Hadron Colliders up to 100 TeV (VLHC), a Muon Collider, and a Triple-Large Electron Positron Collider (TLEP).

Overview and Implications of the Higgs Working Group Report

The Higgs Working Group Report underscores the profound significance of continuing research in Higgs boson physics, utilizing insights from the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass). This comprehensive assessment maps the trajectory for precision Higgs studies across future experimental facilities, with an aim to decode myriad aspects of Higgs physics, including its couplings, quantum features, and existence in extended Standard Model scenarios.

Technical Summary

The research encapsulated within this report explores prospective analyses on Higgs coupling mechanisms with both gauge bosons and fermions, examining the self-coupling consistency through double Higgs production and the challenging domain of potential CP-mixing phenomena within Higgs interactions. Moreover, it outlines realistic projections on the Higgs mass and total width, alongside direct examination for supplementary Higgs bosons within extended models. The facilities under consideration—CLIC, ILC, HL-LHC, VLHC up to 100 TeV, Muon Collider, and TLEP—are analyzed for their contribution to Higgs boson measurement accuracy and capabilities.

Numerical Insights and Predictions

The report refrains from hyperbolic claims, adhering to sober evaluations based on current theoretical and experimental data. For instance, it tackles multifaceted coupling measurements with potential experimental precision: an anticipated ±5-8% precision at HL-LHC on Higgs couplings is contrasted by predictions at lepton colliders pushing beyond ±1-3%. Such precision forecasts have implications for validating the Standard Model or unveiling non-SM phenomena.

Theoretical and Practical Implications

Analyses of CP-mixing in Higgs interactions open discussions regarding potential baryogenetic implications and quantum anomalies, marking the report’s attempt to bridge our understanding of fundamental physics with current experimental evidence. Furthermore, the prospect of deciphering Higgs boson’s total width—theoretically a mere 4 MeV—within current collider environments underscores the challenges and possibilities encapsulated in modern particle physics endeavors.

Speculation on Future AI Developments in Physics

The nuanced approach to integrating empirical data with theoretical predictions showcases an evolving synergy between AI methodologies in data handling, pattern recognition, and theoretical simulations. As AI capabilities advance, they may elevate precision in Higgs research through optimized algorithmic predictions and simulative analyses, potentially accelerating breakthroughs in understanding matter-universe dynamics.

Conclusion

The Higgs Working Group Report stands as a pivotal source guiding future precision experiments across high-energy physics facilities. Its cautious prognostics on key numerical benchmarks and multi-factorial explorations portray the ensemble vision needed for crystallizing our understanding of Higgs physics and its broader cosmological implications.