Apr 19 – 21, 2017
Trieste - Italia
Europe/Rome timezone
Proceedings: Il Nuovo Cimento C, Vol. 41, N. 1-2, 2018 : https://www.sif.it/riviste/sif/ncc/econtents/2018/041/01-02

Measurement of B0, B0s, B+ and Lambda0b production asymmetries in 7 and 8 TeV proton-proton collisions at LHCb

Apr 21, 2017, 5:00 PM
Aula Magna - Edificio H3 (Trieste - Italia)

Aula Magna - Edificio H3

Trieste - Italia

Università degli Studi di Trieste Via Valerio nº 12/2 I-34127 Trieste (TS)
Poster contribution Sessione Frontiera Intensità Archivio Poster


Fabio Ferrari (BO)


The $B^0$, $B^0_s$, $B^+$ and $\Lambda^0_b$ hadron production asymmetries are measured using a data sample corresponding to an integrated luminosity of 3.0$fb^{-1}$, collected by the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The $B^0$, $B^0_s$ and $B^+$ production asymmetries are measured by means of $B^0 \to J/\psi(\mu^+ \mu^-) K^{*0}(K^- \pi^+)$, $B^0_s \to D^{-}_{s}(K^+ K^- \pi^-) \pi^+$ and $B^+ \to J/\psi(\mu^+ \mu^-) K^+$ decays. Then, exploiting a unitarity relation, the $\Lambda^0_b$ production asymmetry is determined. The measurements are performed as a function of transverse momentum and rapidity of the $b$ hadrons within the LHCb detector acceptance. The overall production asymmetries, integrated over transverse momentum and rapidity, are also determined.

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