Measurement of spin correlations in t t ‾ production using the matrix element method in the muon+jets final state in pp collisions at √ s = 8 TeV
Name
1-s2.0-S0370269316301526-main.pdf
Description
Published version
Size
1.04 MB
Format
Adobe PDF
Checksum (MD5)
e9376c8e2a1102bcf4ef11aa9e0a99ed
Author(s)
The CMS Collaboration
Date Issued
2016
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Khachatryan, V., et al. "Measurement of Spin Correlations in Tt Production Using the Matrix Element Method in the Muon+Jets Final State in Pp Collisions at vS=8 Tev." Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 758 (2016): 321-46.
Version
Final published version
Abstract
© 2016 The Author The consistency of the spin correlation strength in top quark pair production with the standard model (SM) prediction is tested in the muon+jets final state. The events are selected from pp collisions, collected by the CMS detector, at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb−1. The data are compared with the expectation for the spin correlation predicted by the SM and with the expectation of no correlation. Using a template fit method, the fraction of events that show SM spin correlations is measured to be 0.72±0.08(stat)−0.13+0.15(syst), representing the most precise measurement of this quantity in the muon+jets final state to date.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2016.05.005
