Measurement of the Q2 evolution of the photon structure function Fγ2

The OPAL Collaboration

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52 Scopus citations


New measurements are presented of the photon structure function Fγ2(x,Q2) at four values of Q2 between 9 and 59 GeV2 based on data collected with the OPAL detector at centre-of-mass energies of 161-172 GeV, with a total integrated luminosity of 18.1 pb-1. The evolution of Fγ2 with Q2 in bins, of x is determined in the Q2 range from 1.86 to 135 GeV2 using data taken at centre-of-mass energies of 91 GeV and 161-172 GeV. Fγ2 is observed to increase with Q2 with a slope of α-1dFγ2/dlnQ2 = 0.10+0.05-0.03 measured in the range 0.1 < x < 0.6.

Original languageEnglish
Pages (from-to)387-401
Number of pages15
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
StatePublished - 16 Oct 1997
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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