A Measurement of the Jet Multiplicity in Di-lepton Final States of ttbar Events

A measurement of the jet multiplicity in di-leptonically decaying ttbar events (i.e. ttbar → (ee, μμ, eμ) + missing transverse momentum + jets) is presented, using 4.66 fb -1 of data collected from √ s = 7 TeV pp collisions at the CERN Large Hadron Collider. In order to mitigate the effects of systematic uncertainties associated with jet energy measurements, a measurement of the ratio of the number of di-lepton ttbar events with N + 2 jets to Z → ℓ ℓ + N jet events is also determined. The results are unfolded for detector effects and compared to the particle-level predictions of several Monte Carlo generators, showing generally good agreement.

Author dc:creator

• Urbaniec, Dustin Henry

• Particles (Nuclear physics)
• Jets (Nuclear physics)
• Dilepton production
• Monte Carlo method
• European Organization for Nuclear Research

Language dc:language

English

DOI dc:identifier

https://doi.org/10.7916/D8HT2WQW

OAI identifier oai:identifier

oai:academiccommons.columbia.edu:10.7916/D8HT2WQW