[en] Photons carrying nonzero orbital angular momentum (twisted photons) are well-known in optics. Recently, using Compton backscattering to boost optical twisted photons to high energies was suggested. 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 nontrivial 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.
Disciplines :
Physics
Author, co-author :
Ivanov, Igor ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Physique des astroparticules
Language :
English
Title :
Colliding particles carrying nonzero orbital angular momentum
Publication date :
03 May 2011
Journal title :
Physical Review. D, Particles and Fields
ISSN :
0556-2821
eISSN :
1089-4918
Publisher :
American Physical Society, College Park, United States - Maryland
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Bibliography
L. Allen, Phys. Rev. A 45, 8185 (1992). PLRAAN 1050-2947 10.1103/PhysRevA.45.8185
S. Franke-Arnold, L. Allen, and M. Padgett, Laser and Photonics Reviews 2, 299 (2008). LPRAB8 1863-8880 10.1002/lpor.200810007
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