ICHEP2012

Transverse Energy Energy Correlations in Next-to-Leading Order in alpha_s at the LHC

5 Jul 2012, 14:15

15m

Room 219 (Melbourne Convention and Exhibition Centre)

Parallel Sessions Track 6. QCD, Jets, Parton Distributions TR 6 - RM 217 - QCD, Jets, Parton Distributions

Speaker

Prof. Ahmed Ali (DESY (DE))

Description

We compute the transverse energy-energy correlation (EEC) and its asymmetry (AEEC) in next-to-leading order (NLO) in ${\alpha }_s$ in proton-proton collisions at the LHC with the center-of-mass energy $E_{\mathrm{c}.\mathrm{m}.}=7$ TeV. We show that the transverse EEC and the AEEC distributions are insensitive to the factorization- and renormalization scales, the underlying minimum bias events, and the structure functions. Hence they can be used to precisely test QCD in hadron colliders and determine ${\alpha }_s$. We illustrate this technique by defining jets using the anti-$k_T$ jet algorithm and an event selection procedure typically used in the analysis of jets at the LHC and show the ${\alpha }_s$-dependence of the transverse EEC and the AEEC in the range $0.11\le {\alpha }_s(M_Z)\le 0.13$.

Presentation materials

Slides

Ali-Melbourne-TR6.pdf