C O ] 1 1 A ug 2 00 9 IPMU 09-0042 ICRR-Report-540 Constraining Light Gravitino Mass from Cosmic Microwave Background

We investigate the possibilities of constraining the light gravitino mass m3/2 from future cosmic microwave background (CMB) surveys. A model with light gravitino with the mass m3/2 < O(10) eV is of great interest since it is free from the cosmological gravitino problem and, in addition, can be compatible with many baryogenesis/leptogenesis scenarios such… CONTINUE READING