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.

Measurement of inclusive two-particle angular correlations in pp collisions with the ATLAS detector at the LHC / G., A., B., A., J., A., A. A., A., A., A., O., A., B., A., M., A., O. S., A., H., A., H., A., E., A., B. S., A., L., A., D. L., A., T. N., A., J., A., M., A., S., A., P., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2012:5(2012), p. 157. [10.1007/jhep05(2012)157]

Measurement of inclusive two-particle angular correlations in pp collisions with the ATLAS detector at the LHC

G. Artoni;BAGNAIA, Paolo;BINI, Cesare;DIONISI, Carlo;GENTILE, Simonetta;GIAGU, Stefano;M. Kado;LACAVA, Francesco;LUCI, Claudio;MESSINA, Andrea;A. Policicchio;SOLFAROLI CAMILLOCCI, ELENA;
2012

Abstract

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.
2012
hadron-hadron scattering
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of inclusive two-particle angular correlations in pp collisions with the ATLAS detector at the LHC / G., A., B., A., J., A., A. A., A., A., A., O., A., B., A., M., A., O. S., A., H., A., H., A., E., A., B. S., A., L., A., D. L., A., T. N., A., J., A., M., A., S., A., P., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2012:5(2012), p. 157. [10.1007/jhep05(2012)157]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/518584
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