Search
Now showing items 1-10 of 211
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, ...
Forward production of Υ mesons in pp collisions at s√=7 and 8 TeV
(, , 2015-11-16)
The production of Υ mesons in pp collisions at s√=7 and 8 TeV is studied with the LHCb detector using data samples corresponding to an integrated luminosity of 1 fb−1 and 2 fb−1 respectively. The ...
Measurement of the forward Z boson production cross-section in pp collisions at s√=7 TeV
(, , 2015-08-10)
A measurement of the production cross-section for Z bosons that decay to muons is presented. The data were recorded by the LHCb detector during pp collisions at a centre-of-mass energy of 7 TeV, and ...
First measurement of time-dependent CP violation in B0s→K+K− decays
(, , 2013-10-25)
Direct and mixing-induced CP-violating asymmetries in B0s→K+K− decays are measured for the first time using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb−1, collected ...
Measurement of CP asymmetry in D0 → K−K+ and D0 → π −π + decays
(, , 2014-07)
Time-integrated CP asymmetries in D0 decays to the final states K−K+ and
π
−π
+ are measured using proton-proton collisions corresponding to 3 fb−1
of integrated
luminosity collected at centre-of-mass ...
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 ...
First observation of the decay Bbar0s->D0K*0 and a measurement of the ratio of branching fractions Br(Bbar0s->D0K*0) / Br(Bbar0s->D0 rho0)
(, , 2011-11-30)
The first observation of the decay B0s
→D0K∗0 using pp data collected by the LHCb detector at a centreof-
mass energy of 7 TeV, corresponding to an integrated luminosity of 36 pb−1, is reported. A ...
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 ...