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Measurement of ψ(2S) production cross-sections in proton-proton collisions at s√=7 and 13 TeV
(Springer, 2020-02)
The cross-sections of ψ(2S) meson production in proton-proton collisions at s√=13 TeV are measured with a data sample collected by the LHCb detector corresponding to an integrated luminosity of 275 pb−1. ...
Precision measurement of the B+c meson mass
(Springer, 2020-07)
A precision measurement of the B+c meson mass is performed using proton- proton collision data collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total ...
Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics
(American Physical Society, 2020-03)
The ratio of the B0s and B+ fragmentation fractions fs and fu is studied with B0s→J/ψϕ and B+→J/ψK+ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8, and 13 TeV ...
Measurement of the ηc(1S) production cross-section in p p collisions at s√=13 TeV
(Springer, 2020-03)
Using a data sample corresponding to an integrated luminosity of 2.0 fb−1, collected by the LHCb experiment, the production of the ηc(1S) state in proton–proton collisions at a centre-of-mass energy of ...
Test of lepton universality with Λ0b→pK−ℓ+ℓ− decays
(Springer, 2020-04)
The ratio of branching fractions of the decays Λ0b → pK−e+e− and Λ0b → pK−μ+μ−, R−1pK, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 ...
Precision measurement of the Ξ++cc mass
(Springer, 2020-02)
A measurement of the Ξ++cc mass is performed using data collected by the LHCb experiment between 2016 and 2018 in pp collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated ...
Observation of several sources of CP violation in B+ → π+ π+ π− decays
(American Physical Society, 2020-01)
Observations are reported of different sources of CP violation from an amplitude analysis of B+→π+π+π− decays, based on a data sample corresponding to an integrated luminosity of 3 fb−1 of pp collisions ...
Observation of a new baryon state in the Λ0bπ+π− mass spectrum
(Springer, 2020-06)
A new baryon state is observed in the Λ0bπ+π− mass spectrum with high significance using a data sample of pp collisions, collected with the LHCb detector at centre-of-mass energies s√ = 7, 8 and 13 TeV, ...
Measurement of the Λ0b → J/ψΛ angular distribution angular distribution and the Λ0b polarisation in pp collisions
(Springer, 2020-06-17)
This paper presents an analysis of the Λ0b→ J/ψΛ angular distribution and the transverse production polarisation of Λ0b baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. ...
Determination of quantum numbers for several excited charmed mesons observed in B−→D*+π−π− decays
(American Physical Society, 2020-01)
A four-body amplitude analysis of the B−→D*+π−π− decay is performed, where fractions and relative phases of the various resonances contributing to the decay are measured. Several quasi-model-independent ...