Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-01-28
Phys.Rev.D83:093001,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
v2: 24 pages, 2 figures; merged with arXiv:1101.1630 and matches the published version
Scientific paper
10.1103/PhysRevD.83.093001
Photons carrying non-zero orbital angular momentum (twisted photons) are well-known in optics. Recently, it was suggested to use Compton backscattering to boost optical twisted photons to high energies. Twisted electrons in the intermediate energy range have also been produced recently. Thus, collisions involving energetic twisted particles seem to be feasible and represent a new tool in high-energy physics. Here we discuss some generic features of scattering processes involving twisted particles in the initial and/or final state. In order to avoid additional complications arising from non-trivial polarization states, we focus here on scalar fields only. We show that processes involving twisted particles allow one to perform a Fourier analysis of the plane wave cross section with respect to the azimuthal angles of the initial particles. In addition, using twisted states one can probe the autocorrelation function of the amplitude, which is inaccessible in the plane wave collisions. Finally, we discuss prospects for experimental study of these effects.
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