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6–8 May 2019
University of Pittsburgh
US/Eastern timezone

Triangle Singularity in the Production of X(3872) and a Photon in e+e Annihilation

7 May 2019, 18:00
15m
207 (Lawrence Hall)

207

Lawrence Hall

parallel talk Flavor II

Speaker

Liping He (Ohio State University)

Description

If the X(3872) is a weakly bound charm-meson molecule, it can be produced in e+e annihilation by the creation of D0D¯0 from a virtual photon followed by the rescattering of the charm-meson pair into the X and a photon. A triangle singularity produces a narrow peak in the cross section for e+eXγ about 2.2 MeV above the D0D¯0 threshold. We predict the absolutely normalized cross section in the region near the D0D¯0 threshold. The peak from the triangle singularity may be observable by the BESIII detector.

Authors

Eric Braaten (Ohio State University) Liping He (Ohio State University) Kevin Ingles (The Ohio State University)

Presentation materials