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Now showing items 21-30 of 304
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. ...
Measurement of the B0s→J/ψ¯¯¯¯K*0 branching fraction and angular amplitudes
(American Physical Society, 2012-10-08)
A sample of 114±11 B0s→J/ψK−π+ signal events obtained with 0.37 fb−1 of pp collisions at √s=7 TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes ...
Observation of the decay B+c → J/ψ K + K − π +
(Springer, 2013-11-12)
The decay B+c → J/ψK + K − π + is observed for the first time, using protonproton collisions collected with the LHCb detector corresponding to an integrated luminosity of 3 fb−1. A signal yield of 78 ± ...
Search for the rare decays B0s → μ+ μ− and B0 → μ+ μ-
(Elsevier, 2011-05-23)
A search for the decays B0s
→μ+μ− and B0→μ+μ− is performed with about 37 pb−1 of pp collisions
at
√
s = 7 TeV collected by the LHCb experiment at the Large Hadron Collider at CERN. The observed
numbers ...
Observation of the B0s→η′η′ Decay
(American Physical Society, 2015-07-28)
The first observation of the B0s→η′η′ decay is reported. The study is based on a sample of proton-proton collisions corresponding to 3.0 fb−1 of integrated luminosity collected with the LHCb detector. ...
Measurement of the CP-violating phase φsin B0s→J/ψπ+π−decays
(Elsevier, 2014-09)
The mixing-induced CP-violating phase in and decays is measured using the final state in data, taken from 3 fb−1 of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass ...
Observation of J/ψp Resonances Consistent with Pentaquark States in Λ0b→J/ψK−p Decays
(American Physical Society, 2015-08-12)
Observations of exotic structures in the J/ψp channel, which we refer to as charmonium-pentaquark states, in Λ0b→J/ψK−p decays are presented. The data sample corresponds to an integrated luminosity of ...
Measurement of CP asymmetry in B 0 s → D ∓ s K ± decays
(Springer, 2014-11-13)
We report on measurements of the time-dependent CP violating observables in B 0 s → D ∓ s K ± decays using a dataset corresponding to 1.0 fb−1 of pp collisions recorded with the LHCb detector. We find ...
Analysis of the resonant components in ¯B0s → J/ψ π+ π−
(American Physical Society, 2012-09-17)
The decay ¯¯¯B0s→J/ψπ+π− can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state ...
Determination of the X(3872) Meson Quantum Numbers
(American Physical Society, 2013-05-29)
The quantum numbers of the X(3872) meson are determined to be JPC=1++ based on angular correlations in B+→X(3872)K+ decays, where X(3872)→π+π−J/ψ and J/ψ→μ+μ−. The data correspond to 1.0 fb−1 of pp ...