An analysis of gammagamma interactions has been performed using untagged hadronic data obtained by the ALEPH detector at LEP. The data at low transverse momentum (p(t)) are well reproduced by a model based on the vector meson dominance mechanism (VDM). At high p(t)thrust the presence of hard scattering processes is demonstrated. This component is well described in shape and normalization by a QCD calculation. RI ANTONELLI, ANTONELLA/C-6238-2011; Buttar, Craig/D-3706-2011; Stahl, Achim/E-8846-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012

AN EXPERIMENTAL-STUDY OF GAMMA-GAMMA-] HADRONS AT LEP

ROLANDI, LUIGI;LIGABUE, FRANCO;LUSIANI, Alberto;
1993

Abstract

An analysis of gammagamma interactions has been performed using untagged hadronic data obtained by the ALEPH detector at LEP. The data at low transverse momentum (p(t)) are well reproduced by a model based on the vector meson dominance mechanism (VDM). At high p(t)thrust the presence of hard scattering processes is demonstrated. This component is well described in shape and normalization by a QCD calculation. RI ANTONELLI, ANTONELLA/C-6238-2011; Buttar, Craig/D-3706-2011; Stahl, Achim/E-8846-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/3322
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