B-hadrons spectroscopy and decay properties with the ATLAS experiment

0522526 - FZÚ 2020 RIV NL eng C - Konferenční příspěvek (zahraniční konf.)
Jakoubek, Tomáš
B-hadrons spectroscopy and decay properties with the ATLAS experiment.
Nuclear and Particle Physics Proceedings. Vol. 258-259. Amsterdam: Elsevier Science BV, 2015, s. 125-128. ISSN 2405-6014.
[International Conference in Quantum Chromodynamics QCD /17./. Montpellier (FR), 30.06.2014-04.07.2014]
Grant CEP: GA MŠMT(CZ) LG13009
Institucionální podpora: RVO:68378271
Klíčová slova: LHC * ATLAS * asymmetry parameter * excited state
Obor OECD: Particles and field physics

The parity violating asymmetry parameter αb in Λb→bJ/ψ decay wasmeasured using the ATLAS detector in protonproton collisions at the Large Hadron Collider at √s = 7 TeV, using data collected in the 2011 run. Furthermore, a search for excited states of the Bc± meson was performed using 4.9 fb-1 of 7 TeV and 19.2 fb-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 Bc± (2S) meson. © 2015 Elsevier B.V.
Trvalý link: http://hdl.handle.net/11104/0307005