Double diffractive -production in collisions
CPHT (Unité mixte C7644 du CNRS.), École Polytechnique, 91128, Palaiseau, France
2 Soltan Institute for Nuclear Studies, Warsaw, Poland
3 Université de Liége, B4000, Liége, Belgium
4 LPT (Unité mixte 8627 du CNRS.), Université Paris-Sud, 91405, Orsay, France
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We present a first estimate of the cross-section for the exclusive process , which will be studied in the future high energy e + e --linear collider. As a first step, we calculate the Born order approximation of the amplitude for longitudinally polarized virtual photons and mesons, in the kinematical region . This process is completely calculable in the hard region . We perform most of the steps in an analytical way. The resulting cross-section turns out to be large enough for this process to be measurable with foreseen luminosity and energy, for Q 1 2 and Q 2 2 in the range of a few GeV2.
© Springer-Verlag, 2005