Search
Now showing items 21-30 of 34
Observation of the decay B0s→ψ(2S)K+π−
(Elsevier, 2015)
The decay B0s→ψ(2S)K+π−is observed using a data set corresponding to an integrated luminosity of 3.0fb−1collected by the LHCb experiment in ppcollisions at centre-of-mass energies of 7 and 8 TeV. The branching fraction ...
Observation of the B0→ρ0ρ0 decay from an amplitude analysis of B0→(π+π−)(π+π−)decays
(Elsevier, 2015)
Proton–proton collision data recorded in 2011 and 2012 by the LHCb experiment, corresponding to an integrated luminosity of 3.0fb−1, are analysed to search for the charmless B0→ρ0ρ0decay. More than 600 B0→(π+π−)(π+π−)signal ...
Precise measurements of the properties of the B1(5721)0,+ and B *2(5747)0,+ states and observation of B+,0π−,+ mass structures
(Springer, 2015)
Invariant mass distributions of B+π− and B0π+ combinations are investigated in order to study excited B mesons. The analysis is based on a data sample corresponding to 3.0 fb−1 of pp collision data, recorded by the LHCb ...
Search for CP violation in D0→π−π+π0 decays with the energy test
(Elsevier, 2015)
A search for time-integrated CPviolation in the Cabibbo-suppressed decay D0→π−π+π0is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton–proton collision data, ...
Measurement of the ηc(1S) production cross-section in proton–proton collisions via the decay ηc(1S)→pp
(Springer, 2015)
The production of the ηc(1S) state in proton-proton collisions is probed via its decay to the pp final state with the LHCb detector, in the rapidity range 2.0<y<4.5 and in the meson transverse-momentum range pT>6.5GeV/c. ...
Search for long-lived particles decaying to jet pairs
(Springer, 2015)
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, corresponding to an ...
Search for the decay B0s→D¯0f0 (980)
(Springer, 2015)
A search for B0s→D¯0f0(980) decays is performed using 3.0 fb1− of pp collision data recorded by the LHCb experiment during 2011 and 2012. The f0(980) meson is reconstructed through its decay to the π+π− final state in the ...
Measurement of the time-dependent CP asymmetries in B0s → J/ψK0S
(Springer, 2015)
The first measurement of decay-time-dependent CP asymmetries in the decay B0s → J/ψK0S and an updated measurement of the ratio of branching fractions B(B0s→J/ψK0S)/B(B0→J/ψK0S)are presented. The results are obtained using ...
Measurement of the inelastic pp cross-section at a centre-of-mass energy of √s = 7 TeV
(Springer, 2015)
The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum p T > 0.2GeV/c in the pseudorapidity range 2.0 < η < 4.5, is measured by the LHCb ...
Measurement of the B 0s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ
(Springer, 2015)
Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B 0s → ϕϕ branching fraction is measured to be
B(B0s→ϕϕ)=(1.84±0.05(stat ...