# The Q$^2$ evolution of the Hadronic Photon Structure Function $F^\gamma_2$ at LEP

3 CMS
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
Abstract : New measurements at a centre-of-mass energy of 183 GeV of the hadronic photon structure function F2(x) in the Q2 interval, 9 GeV2 Q2 30 GeV2, are presented. The data, collected in 1997, with the L3 detector, correspond to an integrated luminosity of 51.9 pb-1. Combining with the data taken at centre-of-mass energies of 91 GeV, the evolution of F2 with Q2 is measured in the Q2 range from 1.2 GeV2 to 30 GeV2. F2 shows a linear growth with ln(Q2); the value of the slope (alpha-1)dF2(Q2)/dln(Q2) is measured in two x bins from 0.01 to 0.2 and is higher than predictions.
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Submitted on : Tuesday, April 13, 1999 - 9:19:17 AM
Last modification on : Friday, December 4, 2020 - 1:22:16 PM
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### Citation

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, et al.. The Q$^2$ evolution of the Hadronic Photon Structure Function $F^\gamma_2$ at LEP. Physics Letters B, Elsevier, 1999, 447, pp.147-156. ⟨10.1016/S0370-2693(98)01552-4⟩. ⟨in2p3-00003512⟩

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