Precision luminosity measurement at LHC using two-photon production of mu^+ mu^- pairs
A.G. Shamov, V.I. Telnov (Institute of Nuclear Physics,, Novosibirsk)
TL;DR
This paper explores using two-photon mu^+ mu^- production at LHC for precise luminosity measurement, achieving 1-2% accuracy with ATLAS and promising similar results for LHCb.
Contribution
It demonstrates a method for high-precision luminosity measurement at LHC using two-photon muon pair production, with estimated accuracy levels.
Findings
Achieves 1-2% luminosity measurement accuracy with ATLAS.
Preliminary estimates suggest similar accuracy for LHCb at lower luminosity.
Validates the two-photon process as a reliable luminosity monitor.
Abstract
The application of the two-photon process pp -> pp + mu^+mu^- for the luminosity measurements at LHC with the ATLAS detector is considered. The expected accuracy of the absolute offline luminosity determination is 1 - 2 % for the luminosity range of 10^{33} - 10^{34} cm^-2 s^-1. The preliminary cross section estimates done for LHCb promise the same level of the luminosity measurement accuracy at L = 2 x 10^{32} cm^-2 s^-1.
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