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1.
Search for CPCP violation in Ξ+cpKπ+Ξ+cpKπ+ decays using model-independent techniques / LHCb Collaboration
A first search for CPCP violation in the Cabibbo-suppressed Ξ+cpKπ+Ξ+cpKπ+ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb13.0 fb1, and collected by the LHCb experiment at centre-of-mass energies of 77 and 8 TeV8 TeV. [...]
arXiv:2006.03145; CERN-EP-2020-069; LHCb-PAPER-2019-026; LHCB-PAPER-2019-026.- Geneva : CERN, 2020-10-26 - 16 p. - Published in : Eur. Phys. J. C 80 (2020) 986 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
2.
Measurement of the shape of the B0sDsμ+νμB0sDsμ+νμ differential decay rate / LHCb Collaboration
The shape of the B0sDsμ+νμB0sDsμ+νμ differential decay rate is obtained as a function of the hadron recoil using proton-proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb11 collected by the LHCb detector. The B0sDsμ+νμB0sDsμ+νμ decay is reconstructed through the decays DsDsγDsDsγ and DsKK+π. [...]
arXiv:2003.08453; LHCb-PAPER-2019-046; CERN-EP-2020-026; LHCB-PAPER-2019-046.- Geneva : CERN, 2020-12-22 - 32 p. - Published in : JHEP 2012 (2020) 144 Article from SCOAP3: PDF; Fulltext: 2003.08453 - PDF; LHCb-PAPER-2019-046 - PDF; Related data files: ZIP; Supplementary material: ZIP;
3.
Measurement of the ηc(1S) production cross-section in pp collisions at s=13 TeV / LHCb Collaboration
Using a data sample corresponding to an integrated luminosity of 2.0fb1, collected by the LHCb experiment, the production of the ηc(1S) state in proton-proton collisions at a centre-of-mass energy of s=13 TeV is studied in the rapidity range 2.0<y<4.5 and in the transverse momentum range 6.5<pT<14.0 GeV. The cross-section for prompt production of ηc(1S) mesons relative to that of the J/ψ meson is measured using the pˉp decay mode and is found to be σηc(1S)/σJ/ψ=1.69±0.15±0.10±0.18. [...]
arXiv:1911.03326; LHCb-PAPER-2019-024; CERN-EP-2019-214; LHCB-PAPER-2019-024.- 2020-03-02 - 29 p. - Published in : Eur. Phys. J. C 80 (2020) 191 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
4.
Updated measurement of decay-time-dependent CP asymmetries in D0K+K and D0π+π decays / LHCb Collaboration
A search for decay-time-dependent charge-parity (CP) asymmetry in D0K+K and D0π+π decays is performed at the LHCb experiment using proton-proton collision data recorded at a center-of-mass energy of 13TeV, and corresponding to an integrated luminosity of 5.4fb1. The D0 mesons are required to originate from semileptonic decays of b hadrons, such that the charge of the muon identifies the flavor of the neutral D meson at production. [...]
arXiv:1911.01114; CERN-EP-2019-225; LHCb-PAPER-2019-032; LHCB-PAPER-2019-032.- Geneva : CERN, 2020-01-14 - 12 p. - Published in : Phys. Rev. D 101 (2020) 012005 Article from SCOAP3: PDF; Figures: ZIP; Fulltext: PDF; Supplementary information: ZIP; External link: Figures
5.
Search for the lepton-flavour violating decays B+K+μ±e / LHCb Collaboration
A search for the lepton-flavour violating decays B+K+μ±e is performed using a sample of proton-proton collision data, collected with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3 fb1. No significant signal is observed, and upper limits on the branching fractions are set as B(B+K+μe+)<7.0 (9.5)×109 and B(B+K+μ+e)<6.4 (8.8)×109 at 90 (95) % confidence level. [...]
arXiv:1909.01010; CERN-EP-2019-172; LHCb-PAPER-2019-022.- 2019-12-12 - 11 p. - Published in : Phys. Rev. Lett. 123 (2019) 241802 Article from SCOAP3: PDF; Fulltext: PDF;
6.
Updated measurement of time-dependent CP-violating observables in B0sJ/ψK+K decays / LHCb Collaboration
The decay-time-dependent {\it CP} asymmetry in B0sJ/ψK+K decays is measured using proton-proton collision data, corresponding to an integrated luminosity of 1.9fb1, collected with the LHCb detector at a centre-of-mass energy of 13TeV in 2015 and 2016. Using a sample of approximately 117\,000 signal decays with an invariant K+K mass in the vicinity of the ϕ(1020) resonance, the {\it CP}-violating phase ϕs is measured, along with the difference in decay widths of the light and heavy mass eigenstates of the B0s-¯B0s system, ΔΓs. [...]
arXiv:1906.08356; LHCb-PAPER-2019-013; CERN-EP-2019-108; LHCB-PAPER-2019-013.- Geneva : CERN, 2019-08-22 - 42 p. - Published in : Eur. Phys. J. C Article from SCOAP3: PDF; Erratum: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
7.
CEPC Conceptual Design Report: Volume 2 - Physics & Detector / CEPC Study Group Collaboration
The Circular Electron Positron Collider (CEPC) is a large international scientific facility proposed by the Chinese particle physics community to explore the Higgs boson and provide critical tests of the underlying fundamental physics principles of the Standard Model that might reveal new physics. [...]
arXiv:1811.10545 ; IHEP-CEPC-DR-2018-02 ; IHEP-EP-2018-01 ; IHEP-TH-2018-01.
- 2018 - 424.
Fulltext
8.
Observation of a narrow pentaquark state, Pc(4312)+, and of two-peak structure of the Pc(4450)+ / LHCb Collaboration
A narrow pentaquark state, Pc(4312)+, decaying to J/ψp is discovered with a statistical significance of 7.3σ in a data sample of Λ0bJ/ψpK decays which is an order of magnitude larger than that previously analyzed by the LHCb collaboration. The Pc(4450)+ pentaquark structure formerly reported by LHCb is confirmed and observed to consist of two narrow overlapping peaks, Pc(4440)+ and Pc(4457)+, where the statistical significance of this two-peak interpretation is 5.4σ. [...]
arXiv:1904.03947; LHCb-PAPER-2019-014 CERN-EP-2019-058; LHCB-PAPER-2019-014.- Geneva : CERN, 2019-06-06 - 11 p. - Published in : Phys. Rev. Lett. 122 (2019) 222001 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary material: ZIP; External link: Symmetry Magazine article
9.
Observation of an excited B+c state / LHCb Collaboration
Using pp collision data corresponding to an integrated luminosity of 8.5fb1 recorded by the LHCb experiment at centre-of-mass energies of s=7, 8 and 13TeV, the observation of an excited B+c state in the B+cπ+π invariant-mass spectrum is reported. The state has a mass of 6841.2±0.6(stat)±0.1(syst)±0.8(B+c)MeV/c2, where the last uncertainty is due to the limited knowledge of the B+c mass. [...]
arXiv:1904.00081; CERN-EP-2019-050; LHCb-PAPER-2019-007.- Geneva : CERN, 2019-06-11 - 10 p. - Published in : Phys. Rev. Lett. 122 (2019) 232001 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
10.
Observation of CP violation in charm decays / LHCb Collaboration
A search for charge-parity (CP) violation in D0KK+ and D0ππ+ decays is reported, using pp collision data corresponding to an integrated luminosity of 6 fb1 collected at a center-of-mass energy of 13 TeV with the LHCb detector. The flavor of the charm meson is inferred from the charge of the pion in D(2010)+D0π+ decays or from the charge of the muon in ¯BD0μˉνμX decays. [...]
arXiv:1903.08726; LHCb-PAPER-2019-006; CERN-EP-2019-042; LHCB-PAPER-2019-006.- Geneva : CERN, 2019-05-29 - 12 p. - Published in : Phys. Rev. Lett. 122 (2019) 211803 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2019-006 - PDF; 1903.08726 - PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Symmetry Magazine article

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