Aachen 2019 – scientific programme
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T: Fachverband Teilchenphysik
T 40: Flavorphysik I
T 40.6: Talk
Tuesday, March 26, 2019, 17:15–17:30, S15
Angular analysis of Bs0 → φ µ+µ− decays — •Marcel Materok, Christoph Langenbruch, and Eluned Smith — RWTH Aachen
The LHCb experiment at the LHC is dedicated to the search for new phenomena beyond the Standard Model (SM) through precision measurements of heavy flavour decays. Rare semileptonic b→ sℓ+ℓ− decays are particularly interesting as they constitute flavour-changing neutral currents that are forbidden at tree-level in the SM and are only allowed at loop-level. Theses processes are thus rare and the theoretically clean angular observables are sensitive to the effects of new, heavy particles beyond the SM.
The rare decay Bs0→ φµ+µ− has been previously analysed by the LHCb collaboration using data taken in 2011 and 2012, during Run 1 of the LHC. Further studies of this mode are particularly motivated by recent tensions with SM predictions seen in other rare b→ sℓ+ℓ− processes.
This talk will show the progress of the measurement of the angular observables in the Bs0→ φµ+µ− decay using Run 1 and 2 LHCb Data. The focus of this talk will be on the validation of the angular fit.