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Now showing items 1-10 of 74
First Measurement of the CP-Violating Phase in B0s→ϕϕ Decays
(American Physical Society, 2013-06-12)
A first flavor-tagged measurement of the time-dependent CP-violating asymmetry in B0s→ϕϕ decays is presented. In this decay channel, the CP-violating weak phase arises due to CP violation in the ...
Measurement of the cross-section for Z → e+e- production in pp collisions at s√=7 TeV
(Springer, 2013-02-19)
A measurement of the cross-section for pp → Z → e+e− is presented using data at s√=7
TeV corresponding to an integrated luminosity of 0.94 fb−1. The process is measured within the kinematic acceptance ...
Measurement of the B 0 → K ∗0 e + e − branching fraction at low dilepton mass
(Springer, 2013-05-29)
The branching fraction of the rare decay B 0 → K ∗0 e + e − in the dilepton mass region from 30 to 1000 MeV/c 2 has been measured by the LHCb experiment, using pp collision data, corresponding to an ...
Measurement of the fragmentation fraction ratio f s /f d and its dependence on B meson kinematics
(Springer, 2013-04-02)
The relative production rate of B0s and B 0 mesons is determined with the hadronic decays B0s→D−sπ+ and B 0 → D − K +. The measurement uses data corresponding to 1.0 fb−1 of pp collisions at a centre-of-mass ...
Measurement of D0–¯¯¯D0 Mixing Parameters and Search for CP Violation Using D0→K+π− Decays
(American Physical Society, 2013-12-18)
Measurements of charm mixing parameters from the decay-time-dependent ratio of D0→K+π− to D0→K−π+ rates and the charge-conjugate ratio are reported. The analysis uses data, corresponding to 3 fb−1 of ...
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 ± ...
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 ...
Search for Rare B 0 ( s ) → μ + μ − μ + μ − Decays
(American Physical Society, 2013-05)
A search for the decays
B
0
s
→
μ
+
μ
−
μ
+
μ
−
and
B
0
→
μ
+
μ
−
μ
+
μ
−
is performed using data, corresponding to an integrated luminosity of
1.0
fb
−
1
, collected with the LHCb detector in ...
Observations of B0 s → ψ(2S)η and B0 (s) → ψ(2S)π+π− decays
(Elsevier, 2013-06)
First observations of the B0s→ψ(2S)η,B0→ψ(2S)π+π− and B0s→ψ(2S)π+π− decays are made using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in proton–proton ...
Measurement of CP observables in B 0 → DK ∗0 with D →K + K −
(Springer, 2013-03-12)
The decay B 0 → DK *0 and the charge conjugate mode are studied using 1.0 fb−1 of pp collision data collected by the LHCb experiment at s√=7 TeV in 2011. The CP asymmetry between the B 0 → DK *0 and the ...