Search for the decay B_s^0 → π^0 π^0 at high luminosity electron-positron collider experiment
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Date
2023
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Abstract
We report the results of the first search for the decay B_s^0 → π^0 π^0 using 121.4 fb^{-1}
of data collected at the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy electron-positron collider. We observe no signal and set a 90% confidence level
upper limit of 7.7×10^{-6} on the B_s^0 → π^0 π^0 decay branching fraction. Our result
constitutes the first stringent upper limit set by the Belle experiment for this decay channel.
Description
Supervisor: Bhuyan, Bipul
Keywords
Standard Model, Rare Decays, Belle Experiment