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First observation of the decay
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1048
The decay is observed for the first time using proton-proton collision data collected by the LHCb detector at centre-of-mass energies of , …
Observation of the decay
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1059
The first observation of the decay and the measurement of its branching ratio relative to the decay are presented. The data sample…
Study of meson decays to charmonia plus multihadron final states
LHCb Collaboration, R. Aaij, A. S. W. Abdelmotteleb +1058
Four decay modes of the meson into a meson and multiple charged kaons or pions are studied using proton-proton collision data, collected with the~LHCb detector at cen…
Measurement of the charm mixing parameter using two-body meson decays
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995
A measurement of the ratios of the effective decay widths of and decays over that of decays is performed with the LHCb experiment…
Study of charmonium and charmonium-like contributions in decays
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995
A study of decays, followed by and , is performed using a dataset collected with the LHCb detector in proton-pro…
Observation of the decay
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +992
The first observation of the semileptonic -baryon decay , with a significance of , is reported using a data sample correspondin…
Observation of the and decays
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +988
The first observations of and decays are presented, and their branching…
Observation of and decays
R. Aaij, A. S. W. Abdelmotteleb, C. Abellán Beteta +995
The multihadron decays and are observed in data corresponding to an integrated luminosity of 3fb, collecte…
Measurement of the photon polarization in decays
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994
The photon polarization in transitions is measured for the first time in radiative b-baryon decays exploiting the unique spin structure of decays. A data s…
Search for massive long-lived particles decaying semileptonically at sqrt(s)=13 TeV
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +996
A search is performed for massive long-lived particles (LLP) decaying semileptonically into a muon and two quarks. Two kinds of LLP production processes were considered. In the fir…
Observation of two new excited states decaying to
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995
Two narrow resonant states are observed in the mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13, collect…
Measurement of production in proton-proton collisions at and TeV
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +997
The production cross-section of the state relative to the meson is measured using proton-proton collision data collected with the LHCb experiment at centre-o…
Search for the doubly charmed baryon in the final state
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +992
A search for the doubly charmed baryon is performed in the invariant-mass spectrum, where the baryon is reconstructed in t…
Measurement of the W boson mass
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994
The boson mass is measured using proton-proton collision data at TeV corresponding to an integrated luminosity of 1.7 fb recorded during 2016 by the LHCb e…
Study of the doubly charmed tetraquark
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994
An exotic narrow state in the mass spectrum just below the mass threshold is studied using a data set corresponding to an integrated luminosity of 9 fb$^{-1…
Observation of an exotic narrow doubly charmed tetraquark
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994
Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. The observation of a new type of hadronic state, a doubly…
Updated search for decays to two charm mesons
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995
A data set corresponding to an integrated luminosity of of proton-proton collisions collected by the LHCb experiment has been analysed to search for $B_c^+ \to D…
Measurement of production cross-sections in collisions at TeV
LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +990
The production cross-sections of mesons in proton-proton collisions at a centre-of-mass energy of TeV are measured using a data sample corresponding to an integr…
Observation of excited baryons in decays
LHCb collaboration, R. Aaij, C. Abellán Beteta +959
The first observation of the decay is reported using collision data at centre-of-mass energies of 7, 8 and 13\, collected by the LHCb e…
Study of coherent production in lead-lead collisions at
R. Aaij, C. Abellán Beteta, T. Ackernley +946
Coherent production of mesons is studied in ultraperipheral lead-lead collisions at a nucleon-nucleon centre-of-mass energy of 5 TeV, using a data sample collected by the LHC…
Observation of the mass difference between neutral charm-meson eigenstates
LHCb collaboration, R. Aaij, C. Abellán Beteta +958
A measurement of mixing and violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb experiment from 2016 to…
Branching fraction measurements of the rare and decays
LHCb collaboration, R. Aaij, C. Abellán Beteta +959
The branching fraction of the rare decay is measured using data collected by the LHCb experiment at center-of-mass energies of , and …
Precise determination of the B0s-B0sbar oscillation frequency
LHCb collaboration, R. Aaij, C. Abellán Beteta +946
Mesons comprising a beauty quark and a strange quark can oscillate between particle (B0s) and antiparticle (B0s) flavour eigenstates, with a frequency given by the mass difference…
Test of lepton universality in beauty-quark decays
LHCb collaboration, R. Aaij, C. Abellán Beteta +946
The Standard Model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged lepto…