Unparticle induced baryon number violating nucleon decays
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Journal Volume
662
Journal Issue
3
Pages
259-263
Date Issued
2008
Author(s)
Pakvasa, S.
Abstract
We study baryon number violating nucleon decays induced by unparticle interactions with the standard model particles. We find that the lowest dimension operators which cause nucleon decays can arise at dimension 6 + (d s -3/2) with the unparticles being a spinor of dimension d s = d U + 1/2. For scalar and vector unparticles of dimension d U , the lowest order operators arise at 6 + d U and 7 + d U dimensions, respectively. Comparing the spinor unparticle induced n O s U and experimental bound on invisible decay of a neutron from KamLAND, we find that the scale for unparticle physics is required to be larger than 10 10 GeV for d U < 2 if the couplings are set to be of order one. For scalar and vector unparticles, the dominant baryon number violating decay modes are
Type
journal article