Speaker
Description
Baryon number violation provides one of the most sensitive probes of physics beyond the Standard Model. Despite this sensitivity, baryon-number-violating effective operators of high mass dimension are generally suppressed compared to those of lower dimension. By studying UV completions of these operators, we identify many cases where certain UV completions generate operators only at or above a given mass dimension at tree level, requiring loop-induced diagrams to produce lower-dimensional operators, which in some instances are more suppressed than higher-dimension tree-level ones. Such scenarios can lead to higher-order operators becoming dominant. Additionally, we consider operators involving derivatives, which are often neglected in phenomenological analyses since they are typically suppressed relative to non-derivative operators. However, in cases where the lowest operator generated by a given UV completion necessarily involves a derivative, such operators can, in fact, become the dominant contributions.