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1.
Observation of exotic J/ψϕJ/ψϕ resonances in diffractive processes in proton-proton collisions / LHCb Collaboration
The first study of J/ψϕJ/ψϕ production in diffractive processes in proton-proton collisions is presented. [...]
arXiv:2407.14301 ; LHCb-PAPER-2023-043 ; CERN-EP-2024-149 ; LHCB-PAPER-2023-043.
- 2024 - 21.
Fulltext - Related data file(s) - Fulltext
2.
First observation of Λ0bΣ()++cD()KΛ0bΣ()++cD()K decays / LHCb Collaboration
The four decays, Λ0bΣ()++cD()K, are observed for the first time using proton-proton collision data collected with the LHCb detector at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 6fb1. By considering the Λ0bΛ+c¯D0K decay as reference channel, the following branching fraction ratios are measured to be, B(Λ0bΣ++cDK)B(Λ0bΛ+c¯D0K)=0.282±0.016±0.016±0.005,B(Λ0bΣ++cDK)B(Λ0bΣ++cDK)=0.460±0.052±0.028,B(Λ0bΣ++cDK)B(Λ0bΣ++cDK)=2.261±0.202±0.129±0.046,B(Λ0bΣ++cDK)B(Λ0bΣ++cDK)=0.896±0.137±0.066±0.018, where the first uncertainties are statistical, the second are systematic, and the third are due to uncertainties in the branching fractions of intermediate particle decays. [...]
arXiv:2404.19510; LHCb-PAPER-2023-044; CERN-EP-2024-098.- Geneva : CERN, 2024-08-01 - 13 p. - Published in : Phys. Rev. D 110 (2024) L031104 Fulltext: LHCb_PAPER_2023_044 - PDF; Publication - PDF; 2404.19510 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
3.
Search for prompt production of pentaquarks in charm hadron final states / LHCb Collaboration
A search for hidden-charm pentaquark states decaying to a range of ΣcˉD and Λ+cˉD final states, as well as doubly-charmed pentaquark states to ΣcD and Λ+cD, is made using samples of proton-proton collision data corresponding to an integrated luminosity of 5.7fb1 recorded by the LHCb detector at s=13TeV. Since no significant signals are found, upper limits are set on the pentaquark yields relative to that of the Λ+c baryon in the Λ+cpKπ+ decay mode. [...]
arXiv:2404.07131; LHCb-PAPER-2023-018; CERN-EP-2024-071; LHCB-PAPER-2023-018.- Geneva : CERN, 2024-08-01 - 19 p. - Published in : Phys. Rev. D 110 (2024) 032001 Fulltext: 2404.07131 - PDF; LHCb-PAPER-2023-018 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: PDF;
4.
Search for the B0sμ+μγ decay / LHCb Collaboration
A search for the fully reconstructed B0sμ+μγ decay is performed at the LHCb experiment using proton-proton collisions at s=13 TeV corresponding to an integrated luminosity of 5.4fb1. No significant signal is found and upper limits on the branching fraction in intervals of the dimuon mass are set B(B0sμ+μγ)<4.2×108, m;(μμ)[2mμ, 1.70]GeV/c2,B(B0sμ+μγ)<7.7×108, m;(μμ)[1.70, 2.88]GeV/c2,B(B0sμ+μγ)<4.2×108, m;(μμ)[3.92, mB0s]GeV/c2, at 95% confidence level. [...]
arXiv:2404.03375; LHCb-PAPER-2023-045; CERN-EP-2024-065.- 2024-07-11 - 28 p. - Published in : JHEP 2407 (2024) 101 Fulltext: 2404.03375 - PDF; document - PDF;
5.
Observation and branching fraction measurement of the decay ΞbΛ0bπ / LHCb Collaboration
The decay ΞbΛ0bπ is observed using a proton-proton collision data sample collected at center-of-mass energy s=13 TeV with the LHCb detector, corresponding to an integrated luminosity of 5.5 fb1. This process is mediated by the suˉud quark-level transition, where the b quark in the Ξb baryon is a spectator in the decay. [...]
arXiv:2307.09427; LHCb-PAPER-2023-015; CERN-EP-2023-116; LHCB-PAPER-2023-015.- Geneva : CERN, 2023-10-01 - 16 p. - Published in : Phys. Rev. D 108 (2023) 072002 Fulltext: 2307.09427 - PDF; Publication - PDF; Xib2LbPi_2023_14Aug2023 - PDF; External link: Previous draft version
6.
Amplitude analysis of the Λ0bpKγ decay / LHCb Collaboration
The resonant structure of the radiative decay Λ0bpKγ in the region of proton-kaon invariant-mass up to 2.5 GeV/c2 is studied using proton-proton collision data recorded at centre-of-mass energies of 7, 8, and 13 TeV collected with the LHCb detector, corresponding to a total integrated luminosity of 9 fb1. Results are given in terms of fit and interference fractions between the different components contributing to this final state. [...]
arXiv:2403.03710; LHCb-PAPER-2023-036; CERN-EP-2023-253; LHCB-PAPER-2023-036.- Geneva : CERN, 2024-06-18 - 39 p.
Fulltext: 2403.03710 - PDF; LHCb-PAPER-2023-036 - PDF; document - PDF; Related data file(s): ZIP; External link: Previous draft version
7.
First observation of the Λ0bD+DΛ decay / LHCb Collaboration
The Λ0bD+DΛ decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.3fb1. Using the B0D+DK0S decay as a reference channel, the product of the relative production cross-section and decay branching fractions is measured to be R=σΛ0bσB0×B(Λ0bD+DΛ)B(B0D+DK0S)=0.179±0.022±0.014 where the first uncertainty is statistical and the second is systematic. [...]
arXiv:2403.03586; LHCb-PAPER-2023-042; CERN-EP-2024-041; LHCB-PAPER-2023-042.- Geneva : CERN, 2024-07-16 - 23 p. - Published in : JHEP 2407 (2024) 140 Fulltext: 2403.03586 - PDF; document - PDF; LHCb-PAPER-2023-042 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
8.
Modification of χc1(3872) and ψ(2S) production in pPb collisions at sNN=8.16 TeV / LHCb Collaboration
The LHCb collaboration measures production of the exotic hadron χc1(3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state ψ(2S) suggests that the exotic χc1(3872) experiences different dynamics in the nuclear medium than conventional hadrons, and comparison with data from proton-proton collisions indicates that the presence of the nucleus may modify χc1(3872) production rates. [...]
arXiv:2402.14975; LHCb-PAPER-2023-026; CERN-EP-2024-033.- 2024-06-13 - 20 p. - Published in : Phys. Rev. Lett. 132 (2024) 242301 Fulltext: 2402.14975 - PDF; Publication - PDF;
9.
Measurement of the Z boson production cross-section in pp collisions at s=5.02 TeV / LHCb Collaboration
The first measurement of the Z boson production cross-section at centre-of-mass energy s=5.02TeV in the forward region is reported, using pp collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of 100±2pb1. The production cross-section is measured for final-state muons in the pseudorapidity range 2.0<η<4.5 with transverse momentum pT>20GeV/c. [...]
arXiv:2308.12940; LHCb-PAPER-2023-010; CERN-EP-2023-141; LHCB-PAPER-2023-010.- Geneva : CERN, 2024-02-13 - 38 p. - Published in : JHEP 2402 (2024) 070 Fulltext: 2308.12940 - PDF; LHCb-PAPER-2023-010 - PDF; Publication - PDF; Related data file(s): ZIP;
10.
Measurement of the branching fraction of B0J/ψπ0 decays / LHCb Collaboration
The ratio of branching fractions between B0J/ψπ0 and B+J/ψK+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb1. The measured value is BB0J/ψπ0BB+J/ψK+=(1.153±0.053±0.048)×102, where the first uncertainty is statistical and the second is systematic. [...]
arXiv:2402.05528; LHCb-PAPER-2023-041; CERN-EP-2024-009.- Geneva : CERN, 2024-05-07 - 28 p. - Published in : JHEP 2405 (2024) 065 Cover note: ZIP; Fulltext: 2402.05528 - PDF; document - PDF; PAPER_2023_041 - PDF;

CERN Document Server : Pronađeno je 247 zapisa   1 - 10slijedećikraj  idi na zapis:
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247 Heijhoff, Kevin
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