Study of B → Kππγ decays

4th Symposium on Prospects in the Physics of Discrete Symmetries

Pilloni, Alessandro^1

Sapienza Università di Roma, Dipartimento di Fisica and INFN, P.le Aldo Moro 5, Rome

I-00181, Italy^1

关键词: Amplitude analysis;    CP asymmetries;    Extract informations;    Final state;    New physics;    Resonant structures;    The standard model;    Time-dependent analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/631/1/012036/pdf
DOI  :  10.1088/1742-6596/631/1/012036

来源: IOP

【 摘 要 】

In b → sγ transitions, the Standard Model predicts that B0() decays are related predominantly to the presence of right- (left-) handed photons in the final state. Therefore, the mixing-induced CP asymmetry in B → fCPγ decays is expected to be small, thus being any sizeable observed asymmetries due to New Physics. In this analysis, we extract information about the Kππ resonant structures by means of an amplitude analysis of the mKππand mKπspectra in B+→ K+π-π+γ. The results are used, assuming isospin symmetry, to extract the mixing-induced CP parameters of the process B0→ K0sρ0γ from the time-dependent analysis of B0→ K0sπ+π-γ decays without an explicit amplitude analysis of this mode.