Measurement of inclusive two-particle angular correlations in pp collisions with the ATLAS detector at the LHC
2012 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, no 5, 157- p.Article in journal (Refereed) Published
We present a measurement of two-particle angular correlations in proton-proton collisions at root s = 900 GeV and 7 TeV. The collision events were collected during 2009 and 2010 with the ATLAS detector at the Large Hadron Collider using a single-arm minimum bias trigger. Correlations are measured for charged particles produced in the kinematic range of transverse momentum p(T) > 100 MeV and pseudorapidity vertical bar eta vertical bar < 2.5. A complex structure in pseudorapidity and azimuth is observed at both collision energies. Results are compared to PYTHIA 8 and HERWIG++ as well as to the AMBT2B, DW and Perugia 2011 tunes of PYTHIA 6. The data are not satisfactorily described by any of these models.
Place, publisher, year, edition, pages
2012. no 5, 157- p.
IdentifiersURN: urn:nbn:se:kth:diva-99498DOI: 10.1007/JHEP05(2012)157ISI: 000305238600077OAI: oai:DiVA.org:kth-99498DiVA: diva2:542356
QC 20120731. Author count:3038.2012-07-312012-07-31Bibliographically approved