Probing a superlight gravitino in photon-photon collisions

Details Probing a superlight gravitino in photon-photon collisions Probing a superlight gravitino in photon-photon collisions

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvl..59.1517b&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 59, Oct. 5, 1987, p. 1517-1520.

Physics

21

Gravitinos, Particle Collisions, Particle Mass, Photons, Squeezed States (Quantum Theory), Supersymmetry, Gravitons, Linear Polarization, Particle Energy, Supergravity, Supersymmetric Partners Of Known Particles, Supergravity

Scientific paper

Possible observable consequences of a superlight gravitino for high-energy reactions at the teraelectronvolt scale are investigated. At this scale, tree-level unitarity is found to break down for two-photon production of a pair of longitudinally polarized gravitinos. Results indicate that the cross section increases rapidly with energy, and should be measurable at around 100 GeV. It is suggested that a double tag search for the process e(+)e(-) to e(+)e(-) + 'nothing' in the 100-GeV range could raise the lower bound on the gravitino mass and make possible the detection of a superlight gravitino.

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