Estimating power corrections for the Drell-Yan process

Area of Science:

• High Energy Physics
• Quantum Chromodynamics
• Particle Physics

Background:

• The Drell-Yan process is crucial for studying electroweak interactions.
• Understanding power corrections is essential for precise theoretical predictions.
• Bottom and charm quark contributions require careful treatment in theoretical models.

Purpose of the Study:

• To investigate and quantify power corrections in Drell-Yan production.
• To analyze the impact of bottom and charm quark effects on DY processes.
• To ensure accurate theoretical predictions by addressing overlapping contributions.

Main Methods:

• Utilizing state-of-the-art predictions for neutral and charged current Drell-Yan.
• Implementing a variable flavor number scheme to include heavy quark effects.
• Applying matching procedures to avoid double counting of contributions.

Main Results:

• Power corrections, particularly from bottom and charm quarks, are significant in the low-Q region.
• The variable flavor number scheme effectively incorporates these heavy quark effects.
• Matching procedures successfully eliminate overlapping contributions, ensuring theoretical consistency.

Conclusions:

• Power corrections play a vital role in precise Drell-Yan calculations.
• The methodology provides a robust framework for future theoretical advancements.
• Accurate modeling of heavy quark contributions is critical for low-Q DY physics.