Measurement of the $k_t$ splitting scales in $Z \to \ell\ell$ events in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector

Morad Aaboud, Georges Aad, Brad Abbott, Jalal Abdallah, Ovsat Abdinov, Baptiste Abeloos, Syed Haider Abidi, Ossama AbouZeid, Nicola Abraham, Halina Abramowicz, Henso Abreu, Ricardo Abreu (+2847 others)
A measurement of the splitting scales occuring in the $k_\mathrm{t}$ jet-clustering algorithm is presented for final states containing a $Z$ boson. The measurement is done using 20.2 fb$^{-1}$ of proton-proton collision data collected at a centre-of-mass energy of $\sqrt{s} = 8$ TeV by the ATLAS experiment at the LHC in 2012. The measurement is based on charged-particle track information, which is measured with excellent precision in the $p_\mathrm{T}$ region relevant for the transition between
more » ... the perturbative and the non-perturbative regimes. The data distributions are corrected for detector effects, and are found to deviate from state-of-the-art predictions in various regions of the observables.
doi:10.3204/pubdb-2017-10613 fatcat:chqe2drharfohir6zxt76u2iwa