| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1835564 | Nuclear and Particle Physics Proceedings | 2015 | 4 Pages |
Abstract
The parity violating asymmetry parameter αb in Λb→ΛJ/ψ decay was measured using the ATLAS detector in proton–proton collisions at the Large Hadron Collider at , using data collected in the 2011 run. Furthermore, a search for excited states of the meson was performed using 4.9fb−1 of 7 TeV and 19.2fb−1 of 8 TeV proton–proton collision data. A new state was observed through its hadronic transition to the ground state, with an invariant mass of 6842 ± 7 ± 4 MeV, consistent with predictions for the meson.
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