Konstantinos Kordas (Aristotle Univ. of Thessaloniki)
We present the measurement of the differential cross-section of the X(3872) state through its decays to J/psi pi pi final state . The cross-section was extracted for both prompt and non-prompt production. The existence of the X(3872) suggests the presence of its bottomonium counterpart X_b. Search for X_b with the ATLAS experiment in several final states, including Upsilon pi pi, is presented.
Dr Salvador Marti (IFIC-Valencia (UVEG-CSIC))