Measurement of the Λb polarization and angular parameters in Λb→J /ψ Λ decays from p p collisions at √{s }=7 and 8 TeV
An analysis of the bottom baryon decay Λb→J /ψ (→μ+μ- )Λ (→p π- ) is performed to measure the Λb polarization and three angular parameters in data from p p collisions at √{s }=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00 ±0.06 (stat )±0.06 (syst ) and the parity-violating
Sirunyan, A. M. et al.
Fecha de publicación:
4
2018