Search
Now showing items 11-20 of 302
Observation of J/ψ-pair production in pp collisions at s=7 TeV
(Elsevier, 2012-01-16)
The production of J/ψpairs in proton–proton collisions at a centre-of-mass energy of 7 TeV has beenobserved using an integrated luminosity of 37.5 pb−1collected with the LHCb detector. The productionc ...
Measurements of the branching fractions of B+ → ppK¯ + decays
(Springer, 2013-06)
The branching fractions of the decay B+ →
ppK¯ + for different intermediate states are measured using
data, corresponding to an integrated luminosity of 1.0 fb−1,
collected by the LHCb experiment. The ...
Measurement of the track reconstruction efficiency at LHCb
(IOPscience, 2015-02)
The determination of track reconstruction efficiencies at LHCb using J/ψ→μ+μ- decays is presented. Efficiencies above 95% are found for the data taking periods in 2010, 2011, and 2012. The ratio of the ...
Evidence for the decay B0 → J/ψω and measurementof the relative branching fractions of B0s meson decays to J/ψη and J/ψη′
(Elsevier, 2012-10)
First evidence of the B0→J/ψω decay is found and the B0s→J/ψη and B0s→J/ψη′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experimentin ...
Study of χb meson production in pp collisions at s√=7 and 8TeV and observation of the decay χb(3P)→Υ(3S)γ
(Springer, 2014-10-08)
A study of χb meson production at LHCb is performed on proton–proton collision data, corresponding to 3.0 fb−1of integrated luminosity collected at centre-of-mass energies s√ = 7 and 8 TeV. The fraction ...
Search for long-lived particles decaying to jet pairs
(Springer, 2015-04-17)
A search is presented for long-lived particles with a mass between 25 and 50 GeV/c2 and a lifetime between 1 and 200ps in a sample of proton–proton collisions at a centre-of-mass energy of s√=7 TeV, ...
Measurements of Bþ c Production and Mass with the Bþ c ! J=c þ Decay
(American Physical Society, 2012-12-05)
Measurements of B+c production and mass are performed with the decay mode B+c→J/ψπ+ using 0.37 fb−1 of data collected in pp collisions at √s=7 TeV by the LHCb experiment. The ratio of the production ...
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 forward energy flow in pp collisions at √s = 7 TeV
(Springer, 2013-05)
The energy flow created in pp collisions at √s =
7 TeV is studied within the pseudorapidity range 1.9 <η<
4.9 with data collected by the LHCb experiment. The measurements are performed for inclusive ...
Studies of beauty baryon decays to D0ph− and Λ+ch− final states
(American Physical Society, 2014-02-13)
Decays of beauty baryons to the D0ph− and Λ+ch− final states (where h indicates a pion or a kaon) are studied using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb−1, ...