Luminosity Measurement Method for LHC: The theoretical precision and the experimental challenges

TL;DR

This paper introduces a precise method for monitoring LHC luminosity using coplanar lepton pairs, focusing on modeling accuracy, measurement optimization, and experimental filtering challenges to achieve better than 1% precision.

Contribution

It evaluates the modeling precision of lepton pair production and optimizes measurement strategies for accurate luminosity monitoring at LHC.

Findings

Modeling precision of lepton pair production is sufficient for sub-1% accuracy.

Optimized measurement region improves rate prediction accuracy.

Discussed experimental challenges in filtering luminosity monitoring lepton pairs.

Abstract

This is the first of the series of papers which present a precision method of the day-by-day monitoring of the absolute LHC luminosity. The method is based on the measurement of the rate of coplanar lepton pairs produced in peripheral collisions of the beams' particles. In the present paper we evaluate the modeling precision of the lepton pair production processes in proton-proton collisions, optimize the measurement region to achieve better than 1% accuracy of the predicted rates, and discuss the experimental challenges to filter out the luminosity monitoring lepton pairs at LHC.