Azimuthal asymmetry as a new handle on σL/σT in diffractive DIS

1998/12/01 by N. N. Nikolaev, A. V. Pronyaev, B. G. Zakharov +1 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.59.091501

published as Phys.Rev.D59:091501,1999 · 5 pages, 6 figures

arxiv created 1998/12/01 · openalex publication_date 1999/03/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We propose a new method of determining R^D=\ensuremathσ_L^D/\ensuremathσ_T^D from the dependence of the diffractive cross section on the azimuthal angle between the electron scattering and proton scattering planes. The method is based on our finding of the model independence of the ratio of the LT interference and transverse diffractive structure functions. The predicted azimuthal asymmetry is substantial and can be measured at DESY HERA. We show that the accuracy of our reconstruction of R^D is adequate for a reliable test of an important PQCD prediction of R^D\ensuremath\gtrsim1 for large \ensuremathβ.

Citations

• Exclusive high-Q2 electroproduction: light-cone wave functions and electromagnetic form factors of mesons

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