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J/psi\rightarrow mumu from 7 TeV pp collisions in ATLAS: physics with the first data
2011
Proceedings of 35th International Conference of High Energy Physics — PoS(ICHEP 2010)
unpublished
Preserved Fulltext
ATLAS has a rich charmonium and beauty physics programme. After a few pb −1 of 7 TeV collision data have been taken at the LHC, ATLAS will be able to start probing the new energy regime with decays of the ψ and Upsilon meson families into pairs of muons. The very first physics measurement, already possible with less than 1 pb −1 of data, is the fraction of J/ψ mesons produced in b-hadron decays. We present preliminary results for this measurement, and discuss the measurement of the differential cross section and J/ψ polarization.
doi:10.22323/1.120.0257
fatcat:wfwr6hy34rci7o76x6ugoru4sm