Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-03-10
JCAP0806:019,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 3 figures. Minor changes due to precision in numerical factors and correction in figure labels. References added. Co
Scientific paper
10.1088/1475-7516/2008/06/019
We have investigated the impact of long-range forces induced by unparticle operators of scalar, vector and tensor nature coupled to fermions in the interpretation of solar neutrinos and KamLAND data. If the unparticle couplings to the neutrinos are mildly non-universal, such long-range forces will not factorize out in the neutrino flavour evolution. As a consequence large deviations from the observed standard matter-induced oscillation pattern for solar neutrinos would be generated. In this case, severe limits can be set on the infrared fix point scale, Lambda_u, and the new physics scale, M, as a function of the ultraviolet (d_UV) and anomalous (d) dimension of the unparticle operator. For a scalar unparticle, for instance, assuming the non-universality of the lepton couplings to unparticles to be of the order of a few per mil we find that, for d_UV=3 and d=1.1, M is constrained to be M > O(10^9) TeV (M > O(10^10) TeV) if Lambda_u= 1 TeV (10 TeV). For given values of Lambda_u and d, the corresponding bounds on M for vector [tensor] unparticles are approximately 100 [3/Sqrt(Lambda_u/TeV)] times those for the scalar case. Conversely, these results can be translated into severe constraints on universality violation of the fermion couplings to unparticle operators with scales which can be accessible at future colliders.
Funchal Renata Zukanovich
Gonzalez-Garcia M. C.
Holanda C~de P.
No associations
LandOfFree
Constraints from Solar and Reactor Neutrinos on Unparticle Long-Range Forces does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Constraints from Solar and Reactor Neutrinos on Unparticle Long-Range Forces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints from Solar and Reactor Neutrinos on Unparticle Long-Range Forces will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-378355