The gravitino has been explained to exist with a low mass (Tahan 2013 from BICEP2 (BICEP2 Collaboration 2014) can be understood improbable by simply focusing on the mass of the gravitino. This manuscript presents a method involving increasing string vibrations to measure the gravitino mass in the laboratory.Keywords: gravitino, BICEP2, dark matter, string experimentation
BackgroundIn attempts to understand how gravity fits in the Standard Model the gravitino has been an unavoidable subject since it is a superpartner of the graviton, specifically regarding supergravity analogous to electroweak theory W and Z bosons. Accordingly, the gravitino has been well-studied including for troubling Universe topics as dark matter, which has forced the issue of the superparticle mass if wishing to study gravity in the evolution of the Universe. Inflation emerged as the most popular scenario for the development of the Universe and consequently the gravitino has been tied to different inflation theories. The mass of the superpartner has usually been a primary point in the ideas related to how the gravitino can exist with inflation, even having led to disfavoring gravitino dark matter because of discussions regarding how the mass could have prevented the existence of the Universe, e.g. the gravitino problem (Weinberg, 1982). Therefore, the gravitino became a less popular topic of study, particularly considering that evidence for supersymmetry or string theory has been nonexistent.A recent report from the BICEP2 collaboration has reintroduced the possibility for the existence of the gravitino with a large mass, which has not been a primary topic in papers referencing the findings. The mass may not have been well-discussed so far since perhaps it has been considered, like other particles, an unavoidable result of the overall events suggested by the BICEP2 data. Still, the BICEP2 work discussing quantum gravity requires clarification for the existence of a high mass gravitino, particularly considering past studies. By considering the mass in relation to work performed with an instrument that permitted graviton appearance in the lab (Tahan 2011) while remembering theoretical studies of the gravitino, the high mass alone would suggest that the BICEP2 findings are questionable.