Light vector meson production at HERA

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作者
Proskuryakov, A [1 ]
机构
[1] Moscow MV Lomonosov State Univ, Moscow 119899, Russia
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O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
Recent results from HERA on exclusive vector meson production are reviewed. The diffractive reaction gamma*p --> Vp (V = rho(0), omega.phi) has been measured at photon-proton centre-of-mass energies 20 < W < 160 GeV, for photon virtualities Q(2) < 60 GeV2 and for \t\ up to 11 GeV2, where t is the square of the four-momentum transferred at the proton vertex. The gamma*p --> Vp cross section as a function of W, Q(2) and t is presented. The polarisation properties of the rho(0) produced at low and high Q(2) are discussed. The data are compared with perturbative QCD calculations.
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页码:337 / 348
页数:12
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