UNIGE document Scientific Article
previous document  unige:101032  next document
add to browser collection
Title

Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector

CollaborationWith : Akilli, Ece / Ancu, Lucian Stefan / Benoit, Mathieu / Bilbao De Mendizabal, Javier / Calace, Noemi / Clark, Allan Geoffrey / Coccaro, Andrea / Delitzsch, Chris Malena / Della Volpe, Domenico / Di Bello, Francesco / Dubreuil, Arnaud / Ferrere, Didier / Golling, Tobias / Gonzalez Sevilla, Sergio / Iacobucci, Giuseppe / Jansky, Roland / Katre, Akshay / Khoo, Teng Jian / Lanfermann, Marie Christine / Lionti, Anthony Eric / March Ruiz, Luis / Mermod, Philippe / Nackenhorst, Olaf / Paolozzi, Lorenzo / Schramm, Steven / Sfyrla, Anna / Wu, Xin
Published in European Physical Journal. C. 2017, vol. 77, no. 12, p. 872
Collection Open Access - SCOAP3
Abstract Measurements of transverse energy–energy correlations and their associated asymmetries in multi-jet events using the ATLAS detector at the LHC are presented. The data used correspond to s=8TeV proton–proton collisions with an integrated luminosity of 20.2 fb-1 . The results are presented in bins of the scalar sum of the transverse momenta of the two leading jets, unfolded to the particle level and compared to the predictions from Monte Carlo simulations. A comparison with next-to-leading-order perturbative QCD is also performed, showing excellent agreement within the uncertainties. From this comparison, the value of the strong coupling constant is extracted for different energy regimes, thus testing the running of αs(μ) predicted in QCD up to scales over 1TeV . A global fit to the transverse energy–energy correlation distributions yields αs(mZ)=0.1162±0.0011(exp.)-0.0070+0.0084(theo.) , while a global fit to the asymmetry distributions yields a value of αs(mZ)=0.1196±0.0013(exp.)-0.0045+0.0075(theo.) .
Identifiers
Full text
Structures
Citation
(ISO format)
ATLAS COLLABORATION. Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector. In: European Physical Journal. C, 2017, vol. 77, n° 12, p. 872. https://archive-ouverte.unige.ch/unige:101032

62 hits

14 downloads

Update

Deposited on : 2018-01-02

Export document
Format :
Citation style :