High Energy Physics Seminars

A study of D → Ks Ks at Belle and SVD beam background at Belle II

by Ms. Nibedita Dash (IIT Bhubaneswar)

Wednesday, April 18, 2018 from to (Asia/Kolkata)
at TIFR, Mumbai ( AG-69 )
CP violation (CPV) in charm decays is expected to be very small, challenging to observe experimentally. Observing large CPV in this sector could indicate new physics. Singly Cabbibo-suppressed decays such as D → Ks Ks are expected to have an enhanced interference with new-physics amplitudes, giving rise to large CPV. I shall speak about a study of the D → Ks Ks decay performed using 921 fb−1 of data collected near the Υ(4S) and Υ(5S) resonances with the Belle detector at the KEKB asymmetric-energy e+e− collider. Belle II, the next-generation experiment at the luminosity frontier, aims to record 50 times larger data than its predecessor (Belle). This unprecedented luminosity of the SuperKEKB e+e−collider will give rise to a challenging level of beam-induced backgrounds in the interaction region. Proper understanding and mitigating these backgrounds are critical to the success of the Belle II experiment. In the second part of the talk, I shall dwell on beam-background simulation studies for the silicon vertex detector.