Download or read book Top Quark Forward-backward Asymmetry in R-parity Violating Supersymmetry written by Grace Dupuis and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The interaction of bottom squark-mediated top quark pair production, occuring in the R-parity violating minimal supersymmetric standard model (MSSM), is proposed as an explanation of the anomalously large forward-backward asymmetry (FBA) observed at the Tevatron. It is found that this model can give a good fit to top quark data, both the inclusive and invariant mass-dependent asymmetries, while remaining consistent with the total and differential production cross-sections. The model faces very strict constraints from atomic parity violation (APV), resulting from contributions to the effective down quark-Z vertex, but this constraint may be weakened by the additional diagram which is included when top squark mixing is accounted for, and can be satisfied for suitable values of the top squark mass and mixing angle. The model is also challenged by large contributions to flavour-changing neutral currents, however these may be avoided in scenarios admitting heavy first and second generation squarks." --