CERN Accelerating science

CERN Document Server 2,050 ჩანაწერია ნაპოვნი  1 - 10შემდეგიდასასრული  ჩანაწერთან გადასვლა: ძიებას დასჭირდა 8.99 წამი. 
1.
Search for the rare decays W+Ds+γ and ZD0γ at LHCb / LHCb Collaboration
A search for the rare decays W+Ds+γ and ZD0γ is performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 2.0 fb1. No significant signal is observed for either decay mode and upper limits on their branching fractions are set using W+μ+ν and Zμ+μ decays as normalization channels. [...]
arXiv:2212.07120; CERN-EP-2022-252; LHCb-PAPER-2022-033; LHCB-PAPER-2022-033.- Geneva : CERN, 2023 - 15 p. - Published in : Chin. Phys. C 47 (2023) 093002 Fulltext: 2212.07120 - PDF; LHCb-PAPER-2022-033 - PDF; document - PDF; Related data file(s): ZIP;
2.
Search for the doubly heavy baryon Ξbc+ decaying to J/ψΞc+ / LHCb Collaboration
A first search for the Ξbc+J/ψΞc+ decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9fb1 recorded at centre-of-mass energies of 7, 8, and 13TeV. Two peaking structures are seen with a local (global) significance of 4.3(2.8) and 4.1(2.4) standard deviations at masses of 6571MeV/c2 and 6694MeV/c2, respectively. [...]
arXiv:2204.09541; LHCb-PAPER-2022-005; CERN-EP-2022-048.- 2023-07 - 16 p. - Published in : Chin. Phys. C 47 (2023) 093001 Fulltext: document - PDF; 2204.09541 - PDF; Related data file(s): ZIP;
3.
Amplitude analysis of the Λc+pKπ+ decay and Λc+ baryon polarization measurement in semileptonic beauty hadron decays / LHCb Collaboration
An amplitude analysis of Λc+pKπ+ decays together with a measurement of the Λc+ polarization vector in semileptonic beauty hadron decays is presented. A sample of 400000 candidates is selected from proton-proton collisions recorded by the LHCb detector at a center-of-mass energy of 13 TeV. [...]
arXiv:2208.03262; LHCb-PAPER-2022-002; CERN-EP-2022-124.- Geneva : CERN, 2023-07-01 - 27 p. - Published in : Phys. Rev. D 108 (2023) 012023 Fulltext: Publication - PDF; 2208.03262 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
4.
Search for CP violation using T^-odd correlations in B0pp¯K+π decays / LHCb Collaboration
A search for CP and P violation in charmless four-body B0pp¯K+π decays is performed using triple-product asymmetry observables. It is based on proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 8.4 fb1. [...]
arXiv:2205.08973; LHCb-PAPER-2022-003; CERN-EP-2022-083.- Geneva : CERN, 2023-08-01 - 16 p. - Published in : Phys. Rev. D 108 (2023) 032007 Cover note: ZIP; Fulltext: 2205.08973 - PDF; LHCb-PAPER-2022-003 - PDF; Publication - PDF;
5.
Search for the rare hadronic decay Bs0pp¯ / LHCb Collaboration
A search for the rare hadronic decay Bs0pp¯ is performed using proton-proton collision data recorded by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb1. No evidence of the decay is found and an upper limit on its branching fraction is set at B(Bs0pp¯)<4.4 (5.1)×109 at 90% (95%) confidence level; this is currently the world's best upper limit. [...]
arXiv:2206.06673; LHCb-PAPER-2022-004; CERN-EP-2022-102.- 2023-07-01 - 12 p. - Published in : Phys. Rev. D 108 (2023) 012007 Fulltext: 2206.06673 - PDF; Publication - PDF; LHCb_PAPER_2022_004 - PDF; Related data file(s): ZIP;
6.
Nuclear modification factor of neutral pions in the forward and backward regions in pPb collisions / LHCb Collaboration
The nuclear modification factor of neutral pions is measured in proton-lead collisions collected at a center-of-mass energy per nucleon of 8.16 TeV with the LHCb detector. The π0 production cross section is measured differentially in transverse momentum (pT) for 1.5<pT<10.0 GeV and in center-of-mass pseudorapidity (ηCM) regions 2.5<ηCM<3.5 (forward) and 4.0<ηCM<3.0 (backward) defined relative to the proton beam direction. [...]
arXiv:2204.10608; LHCb-PAPER-2021-053; CERN-EP-2022-050.- Geneva : CERN, 2023-07-24 - 14 p. - Published in : Phys. Rev. Lett. 131 (2023) 042302 Fulltext: Publication - PDF; LHCb-PAPER-2021-053 - PDF; 2204.10608 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
7.
Observation of sizeable ω contribution to χc1(3872)π+πJ/ψ decays / LHCb Collaboration
Resonant structures in the dipion mass spectrum from χc1(3872)π+πJ/ψ decays, produced via B+K+χc1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb1. A sizeable contribution from the isospin conserving χc1(3872)ωJ/ψ decay is established for the first time, (21.4±2.3±2.0)%, with a significance of more than 7.1σ. [...]
arXiv:2204.12597; LHCb-PAPER-2021-045; CERN-EP-2022-049.- Geneva : CERN, 2023-07-01 - 12 p. - Published in : Phys. Rev. D 108 (2023) L011103 Fulltext: 2204.12597 - PDF; Publication - PDF; LHCb-PAPER-2021-045 - PDF; Related data file(s): ZIP;
8.
Measurement of the prompt D0 nuclear modification factor in pPb collisions at sNN=8.16 TeV / LHCb Collaboration
The production of prompt D0 mesons in proton-lead collisions in the forward and backward configurations at a center-of-mass energy per nucleon pair of sNN=8.16 TeV is measured by the LHCb experiment. The nuclear modification factor of prompt D0 mesons is determined as a function of the transverse momentum pT, and rapidity in the nucleon-nucleon center-of-mass frame y. [...]
arXiv:2205.03936; LHCb-PAPER-2022-007; CERN-EP-2022-082.- Geneva : CERN, 2023-09-06 - 12 p. - Published in : Phys. Rev. Lett. 131 (2023) 102301 Fulltext: LHCb-PAPER-2022-007 - PDF; 2205.03936 - PDF; Publication - PDF; Related data file(s): ZIP; supplementary information: ZIP;
9.
Observation of new Ωc0 states decaying to the Ξc+K final state / LHCb Collaboration
Two new excited states, Ωc(3185)0 and Ωc(3327)0, are observed in the Ξc+K invariant-mass spectrum using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9fb1. Five previously observed excited Ωc0 states are confirmed, namely Ωc(3000)0, Ωc(3050)0, Ωc(3065)0, Ωc(3090)0, and Ωc(3119)0. [...]
arXiv:2302.04733; CERN-EP-2023-006; LHCb-PAPER-2022-043.- Geneva : CERN, 2023-09-26 - 11 p. - Published in : Phys. Rev. Lett. 131 (2023) 131902 Fulltext: Omegac_PAPER_arXiv - PDF; Publication - PDF; 2302.04733 - PDF; Related data file(s): ZIP;
10.
Model-independent measurement of charm mixing parameters in B¯D0(KS0π+π)μν¯μX decays / LHCb Collaboration
A measurement of charm mixing and CP-violating parameters is reported, using B¯D0(KS0π+π)μν¯μX decays reconstructed in proton-proton collisions collected by the LHCb experiment during the years 2016 to 2018, corresponding to an integrated luminosity of 5.4 fb1. The measured mixing and CP-violating parameters are xCP=[4.29±1.48(stat)±0.26(syst)]×103, yCP=[12.61±3.12(stat)±0.83(syst)]×103, Δx=[0.77±0.93(stat)±0.28(syst)]×103, Δy=[3.01±1.92(stat)±0.26(syst)]×103. The results are complementary to and consistent with previous measurements. [...]
arXiv:2208.06512; LHCb-PAPER-2022-020; CERN-EP-2022-160.- 2023-09-01 - 17 p. - Published in : Phys. Rev. D 108 (2023) 052005 Fulltext: LHCb-PAPER-2022-020_EBFinal - PDF; 2208.06512 - PDF; Publication - PDF; Related data file(s): ZIP;

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