MG14 - Talk detail |
Participant |
Addazi, Andrea | |||||||
Institution |
University of L'Aquila - Coppito - L'Aquila - L'Aquila - Italy | |||||||
Session |
ST4 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Neutron-Antineutron transitions from exotic instantons | |||||
Coauthors | ||||||||
Abstract |
Neutron-Antineutron oscillation can be generated by non-perturbative stringy effects. In particular, "Exotic Instantons" could generate 6 quarks effective operators (\Delta B=2), beyond the Standard Model. These effects are calculable and controllable in a large class models with intersecting D-branes models. Contrary to Explicitly R-parity breaking MSSM, and the largest part of GUT, n-\bar{n} transition does not lead to a proton destabilization in a comparable time. So, an intriguing question for phenomenology is: how fast might n-\bar{n} transitions be? We show that such a process can be very fast in comparison with other Baryon and Lepton violating transitions, such as proton decays of neutrinoless-double-beta-decays. Current best limits on n-\bar{n} are surprisingly low, and the next generation of experiments promise to enhance these of two orders in transition time! Further phenomenological implications are also discussed, in susy SM-like and susy PS-like cases. |
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