Search
Now showing items 1-10 of 94
Measurement of the CKM angle γ and B0s-B¯¯¯¯0s mixing frequency with B0s→D∓sh±π±π∓ decays
(, , 2021-03)
The CKM angle γ is measured for the first time from mixing-induced CP violation between B0s→D∓sK±π±π∓ and B¯¯¯¯0s→D±sK∓π∓π± decays reconstructed in proton-proton collision data corresponding to an ...
Search for long-lived particles decaying to jet pairs
(, , 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, ...
Measurement of ϒ production in pp collisions at √ s = 2.76 TeV
(, , 2014-04-29)
The production of Υ(1S), Υ(2S) and Υ(3S) mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3pb−1 collected ...
Observation of Z production in proton-lead collisions at LHCb
(, , 2014-08-19)
The first observation of Z boson production in proton-lead collisions at a centre-of-mass energy per proton-nucleon pair of sNN−−−−√
= 5 TeV is presented. The data sample corresponds to an integrated ...
Measurement of D0–¯¯¯D0 Mixing Parameters and Search for CP Violation Using D0→K+π− Decays
(, , 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 B0 s→K 7 K ∓ and evidence for B0 s→K − π + decays
(, , 2014-12)
Measurements of the branching fractions of → ± ∓ B KK * s
0 and → π± ∓ B K* s
0
decays are performed using a data sample corresponding to − 1.0 fb 1 of protonproton collision data collected with the ...
Observation of the Λ 0 b → J/ψ pπ − decay
(, , 2014-07-22)
The first observation of the Cabibbo-suppressed decay Λ 0 b → J/ψpπ − is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. A ...
Differential branching fractions and isospin asymmetries of B → K (*) μ + μ − decays
(, , 2014-06-26)
The isospin asymmetries of B → Kμ + μ − and B → K * μ + μ − decays and the partial branching fractions of the B 0 → K 0 μ + μ −, B + → K + μ + μ − and B + → K *+ μ + μ − decays are measured as functions ...
Measurement of CP violation parameters in B0 → DK*0 decays
(, , 2014-12-02)
An analysis of B0→DK*0 decays is presented, where D represents an admixture of D0 and ¯D0 mesons reconstructed in four separate final states: K−π+, π−K+, K+K− and π+π−. The data sample corresponds to ...
Study of B0s → J/ψπ+π−K+K− decays
(, , 2021-02)
The decays B0s → J/ψπ+π−K+K− are studied using a data set corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of ...