Luminosity measurement method for the LHC: The detector requirements studies

TL;DR

This paper discusses the detector requirements for a luminosity measurement method at the LHC aimed at achieving 1% precision in absolute normalization, focusing on the necessary detector performance to select specific phase-space events.

Contribution

It evaluates the detector performance requirements crucial for implementing a proposed luminosity measurement method with 1% precision at the LHC.

Findings

Identified phase-space region with <1% cross section control

Defined detector performance criteria for event selection

Proposed a measurement method compatible with existing detector capabilities

Abstract

Absolute normalisation of the LHC measurements with a precision of O(1%) is desirable but beyond the reach of the present LHC detectors. This series of papers proposes and evaluates a measurement method capable to achieve such a precision target. In our earlier paper we have selected the phase-space region where the lepton pair production cross section in pp collisions at the LHC can be controlled with < 1 % precision and is large enough to reach a comparable statistical accuracy of the absolute luminosity measurement on the day-by-day basis. In the present one the performance requirements for a dedicated detector, indispensable to efficiently select events in the proposed phase-space region, are discussed.