Probing a superlight gravitino in photon-photon collisions

Bhattacharya, Tanmoy ; Roy, Probir (1987) Probing a superlight gravitino in photon-photon collisions Physical Review Letters, 59 (14). pp. 1517-1520. ISSN 0031-9007

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A superlight (of mass ~MW2MPl−1) gravitino may have observable consequences for high-energy reactions at the teraelectronvolt scale. Tree-level unitarity is shown to break down there for two-photon production of a pair of longitudinally polarized gravitinos. The cross section rises fast with energy and should be measurable at around 100 GeV. A double-tag search for ee ̅→ee̅+''nothing'' will push up the lower bound on the gravitino mass or detect a superlight gravitino.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:46527
Deposited On:05 Jul 2011 06:13
Last Modified:05 Jul 2011 06:13

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