Towards a precise parton luminosity determination at the CERN LHC
- Institute for Particle Physics (IPP), ETH Zuerich, CH-8093 Zuerich (Switzerland)
A new approach to determine the Large Hadron Collider (LHC) luminosity is investigated. Instead of employing the proton-proton luminosity measurement, we suggest to measure directly the parton-parton luminosity. It is shown that the electron and muon pseudorapidity distributions, originating from the decay of W{sup +}, W{sup {minus}}, and Z{sup 0} bosons produced at 14 TeV pp collisions (CERN LHC), constrain the x distributions of sea and valence quarks and antiquarks in the range from {approx}3{times}10{sup {minus}4} to {approx}10{sup {minus}1} at a Q{sup 2} of about 10{sup 4} GeV{sup 2}. Furthermore, it is demonstrated that, once the quark and antiquark structure functions are constrained from the W{sup {plus_minus}} and Z{sup 0} production dynamics, other q{bar q} related scattering processes at the LHC such as q{bar q}{r_arrow}W{sup +}W{sup {minus}} can be predicted accurately. Thus, the lepton pseudorapidity distributions provide the key to a precise parton luminosity monitor at the LHC, with accuracies of {approx}{plus_minus}1{percent} compared to the so far considered goal of {plus_minus}5{percent}. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 553190
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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