Probing a very narrow Z' boson with CDF and D0 Data

Area of Science:

• High Energy Physics
• Particle Physics
• Beyond Standard Model Physics

Background:

• The Standard Model (SM) is the current framework for particle physics.
• New physics models, such as Stueckelberg extensions of the Standard Model (StSM), propose new particles beyond the SM.
• These models predict a Z' boson with a narrow decay width, originating from topological mass generation.

Purpose of the Study:

• To probe Stueckelberg extensions of the Standard Model (StSM) using experimental data.
• To constrain the parameter space of the StSM by analyzing dilepton production.
• To determine the discovery potential for the predicted Z' boson at future collider experiments.

Main Methods:

• Analysis of dilepton channel data from CDF and D0 experiments.
• Application of Drell-Yan analysis to dilepton production via a hypothetical Z' boson.
• Statistical analysis of experimental data to set limits on model parameters.

Main Results:

• Current experimental data from CDF and D0 (475 pb(-1)) place constraints on the StSM parameter space.
• The analysis indicates that with a larger integrated luminosity (8 fb(-1)), a very narrow Z' boson could be discovered up to a mass of approximately 600 GeV.
• The predicted StSM Z' boson could be distinguished from other new physics signals, such as Randall-Sundrum gravitons.

Conclusions:

• Experimental data currently constrain the parameter space of Stueckelberg extensions of the Standard Model.
• Future high-luminosity data holds the potential for discovering a new Z' boson predicted by the StSM.
• The StSM Z' boson offers a distinct signature that could be observed in regions inaccessible to other proposed new physics.