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LHCb Conference Contributions

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2024-07-30
17:34
Antihelium production in ¯Λ0b decays /LHCb Collaboration
Decays of ¯Λ0b baryons produced in dark matter annihilating into b¯b pairs could enhance the abundance of antihelium in cosmic rays. The LHCb collaboration provides in this paper the first experimental limits on related branching fractions: B(¯Λ0b3¯Hepp)<1.9×109 at 90% CL,B(¯Λ0b3¯HeppX)<1.6×108 at 90% CL,B(¯Λ0b3¯HepX)<3.6×108 at 90% CL, where X denotes one or several particles. [...]
LHCb-CONF-2024-005; CERN-LHCb-CONF-2024-005.- Geneva : CERN, 2024 - 19. - Published in : PoS: ICHEP2024 (2025) , pp. 676 Fulltext: LHCb-CONF-2024-005-figures - ZIP; LHCb-CONF-2024-005 - PDF; ICHEP2024_676 - PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024, pp.676

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2024-07-26
14:09
Simultaneous determination of the CKM angle γ and parameters related to mixing and CP violation in the charm sector /LHCb Collaboration
A combination of measurements sensitive to the CP-violation angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle, to the charm mixing parameters that describe oscillations between D0 and and ¯D0 mesons, and to the CP asymmetries in the D0K+K and D0π+π decays is performed. All relevant beauty and charm results obtained with the data collected with the LHCb detector at CERN's Large Hadron Collider to date are included. [...]
LHCb-CONF-2024-004; CERN-LHCb-CONF-2024-004.- Geneva : CERN, 2024 - 29. Fulltext: LHCb-CONF-2024-004 - PDF; LHCb-CONF-2024-004-figs - ZIP;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024

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2024-06-06
16:32
Search for B0(s)μ+μ in B+cπ+μ+μ decays /LHCb Collaboration
A search for the very rare B0μ+μ and B0sμ+μ decays is conducted by analysing the B+cπ+μ+μ process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9\,fb1. [...]
LHCb-CONF-2024-003; CERN-LHCb-CONF-2024-003.- Geneva : CERN, 2024 - 15. Fulltext: LHCb-CONF-2024-003 - PDF; LHCb-CONF-2024-003.figures - ZIP;
In : 12th Edition of the Large Hadron Collider Physics Conference (LHCP2024), Boston, United States, 3 - 7 Jun 2024, pp.LHCb-CONF-2024-003 ; CERN-LHCb-CONF-2024-003

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2024-06-06
11:11
Observation of the Σ+pμ+μ rare decay at LHCb /LHCb Collaboration
The first observation of the Σ+pμ+μ decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 5.4fb1, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. A yield of 279±19 Σ+pμ+μ decays is observed. [...]
LHCb-CONF-2024-002; CERN-LHCb-CONF-2024-002.- Geneva : CERN, 2024 - 16. Fulltext: LHCb-CONF-2024-002 - PDF; LHCb-CONF-2024-002-figures - ZIP;
In : The XV International Conference on Beauty, Charm, Hyperons in Hadronic Interactions (BEACH 2024) , Charleston, Sc, Us, 3 - 7 Jun 2024

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2024-04-02
18:14
Observation of the rare decay J/ψμ+μμ+μ /LHCb Collaboration
The rare electromagnetic decay J/ψμ+μμ+μ is observed with significance greatly exceeding the discovery threshold, using the proton-proton collision data collected by the LHCb experiment in 2016-2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb1. The rate of this decay is measured relative to that of J/ψμ+μ mode. [...]
LHCb-CONF-2024-001; CERN-LHCb-CONF-2024-001.- Geneva : CERN, 2024 - 17. Fulltext: LHCb-CONF-2024-001 - PDF; LHCb-CONF-2024-001_Figures - ZIP;
In : 58th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 31 Mar - 7 Apr 2024

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2023-10-24
09:25
Pending /LHCb Collaboration
Pending
LHCb-CONF-2023-005; CERN-LHCb-CONF-2023-005.- Geneva : CERN, 2023 - 23.
In : 12th International Workshop on the CKM Unitarity Triangle (CKM 2023), Santiago De Compostela, Spain, 18 - 22 Sep 2023

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2023-10-04
14:36
Measurement of CP asymmetry in B0sDsK± decays /LHCb Collaboration
A measurement of the CP-violating parameters in B0s→>DsK± decays obtained from pp collisions is reported, using a data set corresponding to an integrated luminosity of 6fb1 at a centre-of-mass energy of s=13TeV recorded with the LHCb detector between 2015 and 2018. The measured values are: > Cf=+0.791±0.061±0.022,AΔΓf=0.051±0.134±0.037,AΔΓˉf=0.303±0.125±0.036,Sf=0.571±0.084±0.023,Sˉf=0.503±0.084±0.025, where the uncertainties are statistical and systematic, respectively. [...]
LHCb-CONF-2023-004; CERN-LHCb-CONF-2023-004.- Geneva : CERN, 2023 - 25. Fulltext: LHCb-CONF-2023-004-Fig-Supplementary - ZIP; LHCb-CONF-2023-004 - PDF; LHCb-CONF-2023-004_final_typofix - PDF; LHCb-CONF-2023-004-Fig - ZIP;
In : 12th International Workshop on the CKM Unitarity Triangle (CKM 2023), Santiago De Compostela, Spain, 18 - 22 Sep 2023

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2023-10-04
14:25
Study of CP-violation in B0DK(892)0 decays with DKπ(ππ), ππ(ππ), and KK final states /LHCb Collaboration
The CP-violating observables associated with the interference of B0D0K(892)0 and B0¯D0K(892)0 decay amplitudes are measured in the D0Kπ±(π+π), D0π+π(π+π), and D0K+K final states with proton-proton data collected by the LHCb experiment corresponding to an integrated luminosity of 9fb1. These observables are used to set constraints on the parameter space of the CKM angle γ and the hadronic parameters rDKB0 and δDKB0 with inputs from other measurements [...]
LHCb-CONF-2023-003; CERN-LHCb-CONF-2023-003.- Geneva : CERN, 2023 - 23. Fulltext: figs - ZIP; LHCb-CONF-2023-003 - PDF;
In : 12th International Workshop on the CKM Unitarity Triangle (CKM 2023), Santiago De Compostela, Spain, 18 - 22 Sep 2023

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2023-08-23
09:47
Observation of antihypertriton in pp collisions with LHCb /LHCb Collaboration
The first observation at the LHCb experiment of hypertritons and antihypertritons is reported. The dataset consists of pp collisions at s=13TeV, collected between 2016 and 2018 and corresponding to an integrated luminosity of 5.5fb1. [...]
LHCb-CONF-2023-002; CERN-LHCb-CONF-2023-002.- Geneva : CERN, 2023 - 8. Fulltext: LHCb-CONF-2023002zip - ZIP; LHCb-CONF-2023-002 - PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023

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2023-08-22
14:58
Study of Ξb and Ωb decays to Λ+chh final states /LHCb Collaboration
Decays of Ξb and Ωb baryons to Λ+chh final states, with hh being ππ, Kπ and KK, are searched for using data collected with the LHCb detector. The data sample studied corresponds to an integrated luminosity of 8.7fb1 of pp collisions collected at centre-of-mass energies s=7, 8 and 13TeV. [...]
LHCb-CONF-2023-001; CERN-LHCb-CONF-2023-001.- Geneva : CERN, 2023 - 22. Fulltext: LHCb-CONF-2023-001-plots (1) - ZIP; LHCb-CONF-2023-001 - PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023

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