Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 88: Flavorphysik III

T 88.8: Talk

Thursday, March 28, 2019, 17:50–18:05, S15

Search for the decay D_s0(2317)^±→ D_s^*±γ — Johannes Albrecht¹, •Lukas Calefice¹, and Ricardo Vázquez Gómez² — ¹Experimentelle Physik 5, TU Dortmund — ²CERN

The surprising discoveries of the D_s0(2317)^± and D_s1(2460)^± mesons by the BaBar and CLEO Collaborations in 2003 aroused new interest in the field of heavy-light meson spectroscopy. Their low masses and decay widths allow for decays that are isospin violating or radiative. Although theoretical predictions claim that radiative decays should be sizeable, they have not been seen yet.

The search for the decay D_s0(2317)^±→ D_s^*± γ is performed by measuring the ratio B(D_s0(2317)^±→ D_s^*± γ)/B(D_s0(2317)^±→ D_s^±π⁰) on the full Run II data set recorded by the LHCb experiment. The talk will cover the current status of the analysis.