Study of coherent charmonium production in ultra-peripheral lead-lead collisions
- LHCb collaboration
- Physics, Materials Science
- 16 June 2022
The cross-sections of coherent J/ψ and ψ (2 S ) production in ultra-peripheral PbPb collisions at a nucleon-nucleon centre-of-mass energy of 5 . 02 TeV are measured using a data sample corresponding…
First observation of a doubly charged tetraquark and its neutral partner
- LHCb collaboration
- Physics
- 6 December 2022
A combined amplitude analysis is performed for the decays B 0 → D 0 D + s π − and B + → D − D + s π + , which are related by isospin symmetry. The analysis is based on data collected by the LHCb…
Observation of a resonant structure near the $D_s^+ D_s^-$ threshold in the $B^+\to D_s^+ D_s^- K^+$ decay
- LHCb collaboration
- Physics
- 27 October 2022
An amplitude analysis of the B + → D + s D − s K + decay is carried out to study for the first time its intermediate resonant contributions, using proton-proton collision data collected with the LHCb…
Evidence for modification of $b$ quark hadronization in high-multiplicity $pp$ collisions at $\sqrt{s} = 13$ TeV
- LHCb collaboration
- Physics
- 27 April 2022
The production rate of B 0 s mesons relative to B 0 mesons is measured by the LHCb experiment in pp collisions at a center-of-mass energy √ s = 13 TeV over the forward rapidity interval 2 < y < 4 . 5…
Long-lived particle reconstruction downstream of the LHCb magnet
- LHCb collaboration
- Physics
- 20 November 2022
Charged-particle trajectories are usually reconstructed with the LHCb detector using combined information from the tracking devices placed upstream and downstream of the 4 T m dipole magnet.…
Direct $CP$ violation in charmless three-body decays of $B^{\pm}$ mesons
- LHCb collaboration
- Physics
- 15 June 2022
Measurements of CP asymmetries in charmless three-body decays of B ± mesons are reported using proton-proton collision data collected by the LHCb detector, corresponding to an integrated luminosity…
Amplitude analysis of the $D_s^+ \to \pi^- \pi^+ \pi^+$ decay
- LHCb collaboration
- Physics
- 20 September 2022
A Dalitz plot analysis of the D + s → π − π + π + decay is presented. The analysis is based on proton-proton collision data recorded by the LHCb experiment at a centre-of-mass energy of 8 TeV and…
Measurement of lepton universality parameters in $B^+\to K^+\ell^+\ell^-$ and $B^0\to K^{*0}\ell^+\ell^-$ decays
- LHCb collaboration
- Physics
- 18 December 2022
A simultaneous analysis of the B+→ K+`+`− and B0→ K∗0`+`− decays is performed to test muon-electron universality in two ranges of the square of the dilepton invariant mass, q2. The measurement uses a…
Multidifferential study of identified charged hadron distributions in $Z$-tagged jets in proton-proton collisions at $\sqrt{s}=$13 TeV
- LHCb collaboration
- Physics
- 24 August 2022
Jet fragmentation functions are measured for the first time in proton-proton collisions for charged pions, kaons, and protons within jets recoiling against a Z boson. The charged-hadron distributions…
Measurement of $\Upsilon$ production in $pp$ collisions at $\sqrt{s}=5 \ \rm{TeV}$
- LHCb collaboration
- Physics
- 24 December 2022
The production cross-sections of $\Upsilon$ mesons, namely $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$, in $pp$ collisions at $\sqrt{s}=5 \ \rm{TeV}$ are measured with a data sample…
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