The only anticipated resonant contributions to B+→D+D−K+ decays are charmonium states in the D+D− channel. A model-independent analysis, using LHCb proton-proton collision data taken at center-of-mass energies of s=7...
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The only anticipated resonant contributions to B+→D+D−K+ decays are charmonium states in the D+D− channel. A model-independent analysis, using LHCb proton-proton collision data taken at center-of-mass energies of s=7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1, is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the D+D− pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the D−K+ channel with masses around 2.9 GeV/c2.
Tests of lepton universality in B0 → KS0+- and B+ → K∗++- decays where is either an electron or a muon are presented. The differential branching fractions of B0 → KS0e+e- and B+ → K∗+e+e- decays are measured in in...
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The Standard Model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have ...
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The photo-production of J/ψ mesons at low transverse momentum is studied in peripheral lead-lead collisions collected by the LHCb collaboration at a centre-of-mass energy per nucleon pair of 5 TeV, corresponding to a...
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A search for CP violation in charmless three-body Ξb- → pK-K- decays is performed using pp collision data recorded with the LHCb detector, corresponding to integrated luminosities of 1 fb-1 at a centre-of-mass ener...
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The ratio of the Bs0 and B0 fragmentation fractions, fs/fd, in proton-proton collisions at the LHC, is obtained as a function of B-meson transverse momentum and collision centre-of-mass energy from the combined analys...
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The photon polarization in b → sγ transitions is measured for the first time in radiative b-baryon decays exploiting the unique spin structure of Λ0b → Λγ decays. A data sample corresponding to an integrated lum...
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The first observation of exotic states with a new quark content ccus decaying to the J/ψK+ final state is reported with high significance from an amplitude analysis of the B+ → J/ψφK+ decay. The analysis is carrie...
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This article reports the first measurement of prompt χc1 and χc2 charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio σ(χc2)/σ(χc1) is measured in pPb collisions...
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A search for time-dependent violation of the charge-parity symmetry in D0→ K+K-and D0→ π+π-decays is performed at the LHCb experiment using proton-proton collision data recorded from 2015 to 2018 at a centre-of-ma...
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