סמינר בחלקיקים: Inclusive measurement of the branching fraction for B+ —> X(3872) K+

Zoom: https://tau-ac-il.zoom.us/j/82648164044

Abstract:

In addition to the normal mesons and baryons, QCD allows for other states of different quark (and gluon) constructions, referred to as exotic. The first clearly exotic state,  found in 2003 by Belle, is the X(3872). 23 years have passed since its discovery, and its exact structure is still under investigation. One source of information is its production branching fraction via B+ —> X(3872) K+, which has different theoretical predictions for different interpretations of the X(3872). However, the accuracy of the previous measurements is poor. We are improving the measurement with more data, improved neural-network-based background suppression, and a more precise treatment of the kinematic distribution. In this talk, I will introduce the theoretical background and the inclusive measurement technique and then focus on our method for correctly treating the signal distribution and understanding its uncertainty.

מארגן הסמינר: ד"ר איגור קורובר