CERN Accelerating science

CERN Document Server Намерени са 84 записа  1 - 10следващкрай  отиване на запис: Търсенето отне 0.65 секунди. 
1.
Measurement of CP asymmetry in B0sDsK± decays / LHCb Collaboration
A measurement of the CP-violating parameters in B0sDsK± decays is reported, based on the analysis of proton-proton collision data collected by the LHCb experiment corresponding to an integrated luminosity of 6fb1 at a centre-of-mass energy of 13TeV. [...]
arXiv:2412.14074 ; LHCb-PAPER-2024-020 ; CERN-EP-2024-219.
- 34.
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2.
Measurement of CP asymmetries in Λ0bph decays / LHCb Collaboration
A search for CP violation in Λ0bpK and Λ0bpπ decays is presented using the full Run 1 and Run 2 data samples of pp collisions collected with the LHCb detector, corresponding to an integrated luminosity of 9 fb1 at center-of-mass energies of 7, 8, and 13 TeV. [...]
arXiv:2412.13958 ; LHCb-PAPER-2024-048 ; CERN-EP-2024-330 ; LHCB-PAPER-2024-048.
- 2024 - 24.
Fulltext - Supplementary information - Related data file(s) - Fulltext
3. Real-time alignment and calibration in Run 3 at LHCb
Reference: Poster-2024-1227
Created: 2024. -1 p
Creator(s): Breer, Nils

The real-time alignment and calibration procedure is a fully automatic procedure at LHCb that is executed within each fill of the LHC. This allows identical alignment and calibration constants to be used in the online and offline reconstruction, ensuring consistency between triggered and offline selected events. The alignment estimates the position of detector elements and is essential to achieve the best data quality. The procedure is implemented for the full LHCb tracking system and the event reconstruction is run using multithreaded processes. The operational and technical aspects of this procedure during data-taking is discussed with the focus on the performance in the 2024 data-taking period where the first global tracker alignment was obtained.

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4.
Test of lepton flavour universality with B+K+π+π+ decays / LHCb Collaboration
The first test of lepton flavour universality between muons and electrons using B+K+π+π+ (=e,μ) decays is presented. [...]
arXiv:2412.11645 ; LHCb-PAPER-2024-046 ; CERN-EP-2024-312 ; LHCB-PAPER-2024-046.
- 2024 - 20.
Fulltext - Supplementary information - Related data file(s) - Fulltext
5.
Search for D0 meson decays to π+πe+e and K+Ke+e final states / LHCb Collaboration
A search for D0 meson decays to the π+πe+e and K+Ke+e final states is reported using a sample of proton-proton collisions collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb1. [...]
arXiv:2412.09414 ; LHCb-PAPER-2024-047 ; CERN-EP-2024-307 ; LHCB-PAPER-2024-047.
- 2024 - 21.
Related data file(s) - Fulltext - Supplementary information - Full text
6.
Observation of the open-charm tetraquark state Tcs0(2870)0 in the BDD0K0S decay / LHCb Collaboration
An amplitude analysis of BDD0K0S decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 9 fb1, collected with the LHCb detector at center-of-mass energies of 7, 8, and 13TeV. [...]
arXiv:2411.19781 ; LHCb-PAPER-2024-040 ; CERN-EP-2024-287 ; LHCB-PAPER-2024-040.
- 2024 - 21.
Fulltext - Related data file(s) - Supplementary information - Fulltext
7.
Study of Λ0b and Ξ0b decays to Λh+h and evidence for CP violation in Λ0bΛK+K decays / LHCb Collaboration
A study of Λ 0 b and Ξ0 b decays to Λh+h ′− (h (′) = π, K) is performed using pp collision data collected by the LHCb experiment during LHC Runs 1–2, corresponding to an integrated luminosity of 9 fb−1 . [...]
arXiv:2411.15441 ; LHCb-PAPER-2024-043 ; CERN-EP-2024-281.
- 26.
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8.
Measurement of ϕ(1020) meson production in fixed-target pNe collisions at~sNN~=~68.5 GeV. / LHCb Collaboration
The first measurement of ϕ(1020) meson production in fixed-target pNe collisions at sNN=68.5 GeV is presented. [...]
arXiv:2411.09343 ; LHCb-PAPER-2024-036 ; CERN-EP-2024-274 ; LHCB-PAPER-2024-036.
- 2024 - 20.
Fulltext - Related data file(s) - Fulltext
9.
First evidence for direct CP violation in beauty to charmonium decays / LHCb Collaboration
The CP asymmetry and branching fraction of the CKM-suppressed decay B+Jψπ+ are precisely measured relative to the favoured decay B+JψK+, using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.4 fb1 recorded at center-of-mass energy of 13 TeV during 2016-2018. [...]
arXiv:2411.12178 ; LHCb-PAPER-2024-031 CERN-EP-2024-286 ; LHCb-PAPER-2024-031 ; CERN-EP-2024-286 ; LHCB-PAPER-2024-031.
- 2024 - 20.
Fulltext - Related data file(s) - Fulltext - Supplementary information
10.
Constraints on the photon polarisation in bsγ transitions using B0sϕe+e decays / LHCb Collaboration
An angular analysis of the B0sϕe+e decay is performed using the proton-proton collision dataset collected between 2011 and 2018 by the LHCb experiment, corresponding to an integrated luminosity of 9fb1 at centre-of-mass energies of 7, 8 and 13TeV. [...]
arXiv:2411.10219 ; LHCb-PAPER-2024-030 ; CERN-EP-2024-276 ; LHCB-PAPER-2024-030.
- 2024 - 21.
Fulltext - Related data file(s) - Supplementary information - Fulltext

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