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CERN Document Server 474 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 0.63 sekúnd. 
1.
Measurement of the effective leptonic weak mixing angle / LHCb Collaboration
Using pp collision data at s=13~TeV, recorded by the LHCb experiment between 2016 and 2018 and corresponding to an integrated luminosity of 5.4~fb1, the forward-backward asymmetry in the ppZ/γμ+μ process is measured. The measurement is carried out in ten intervals of the difference between the muon pseudorapidities, within a fiducial region covering dimuon masses between 66 and 116 GeV, muon pseudorapidities between 2.0 and 4.5 and muon transverse momenta above 20 GeV. [...]
arXiv:2410.02502; LHCb-PAPER-2024-028; CERN-EP-2024-230.- Geneva : CERN, 2024-12-03 - 26 p. - Published in : JHEP 2412 (2024) 026 Fulltext: LHCb-PAPER-2024-028 - PDF; 2410.02502 - PDF; document - PDF; Related data file(s): ZIP; Supplementary information: LHCb-PAPER-2024-028-supplementary - ZIP; supplementary (3) - PDF;
2.
Measurement of Λb0, Λc+ and Λ decay parameters using Λb0Λc+h decays / LHCb Collaboration
A comprehensive study of the angular distributions in the bottom-baryon decays Λb0Λc+h(h=π,K), followed by Λc+Λh+ with Λpπ or Λc+pKS0 decays, is performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of 9 fb1 collected by the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. The decay parameters and the associated charge-parity (CP) asymmetries are measured, with no significant CP violation observed. [...]
arXiv:2409.02759; LHCb-PAPER-2024-017; CERN-EP-2024-200.- Geneva : CERN, 2024-12-30 - 34 p. - Published in : Phys. Rev. Lett. 133 (2024) 261804 Fulltext: PDF; Related data file(s): ZIP;
3.
Measurement of CP violation observables in D+KK+π+ decays / LHCb Collaboration
A search for violation of the charge-parity (CP) symmetry in the D+KK+π+ decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb1, collected at a center-of-mass energy of 13 TeV with the LHCb detector. A novel model-independent technique is used to compare the D+ and D phase-space distributions, with instrumental asymmetries subtracted using the D+sKK+π+ decay as a control channel. [...]
arXiv:2409.01414; CERN-EP-2024-204; LHCb-PAPER-2024-019.- Geneva : CERN, 2024-12-16 - 13 p. - Published in : Phys. Rev. Lett. 133 (2024) 251801 Fulltext: 2409.01414v1 - PDF; 2409.01414 - PDF; Publication - PDF; Related data file(s): ZIP;
4.
Study of the rare decay J/ψμ+μμ+μ / LHCb Collaboration
The rare electromagnetic J/ψμ+μμ+μ decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the LHCb experiment during 2016--2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4fb1. The rate of this decay is measured relative to that of the J/ψμ+μ mode. [...]
arXiv:2408.16646; LHCb-PAPER-2024-016; CERN-EP-2024-201; LHCB-PAPER-2024-016.- Geneva : CERN, 2024-12-10 - 25 p. - Published in : JHEP 2412 (2024) 062 Fulltext: LHCb-PAPER-2024-016_arxiv - PDF; 2408.16646 - PDF; document - PDF; Related data file(s): ZIP;
5.
Observation of muonic Dalitz decays of χb mesons and precise spectroscopy of hidden-beauty states / LHCb Collaboration
The decays of the χb1(1P), χb2(1P), χb1(2P) and χb2(2P) mesons into the Υ(1S)μ+μ final state are observed with a high significance using proton-proton collision data collected with the LHCb detector and corresponding to an integrated luminosity of 9fb1. The newly observed decays together with the Υ(2S)Υ(1S)π+π and Υ(3S)Υ(2S)π+π decay modes are used for precision measurements of the mass and mass splittings for the hidden-beauty states..
arXiv:2408.05134; LHCb-PAPER-2024-025; CERN-EP-2024-207.- Geneva : CERN, 2024-10-16 - 29 p. - Published in : JHEP 2410 (2024) 122 Fulltext: LHCb-PAPER-2024-025 - PDF; 2408.05134 - PDF; Publication - PDF; Related data file(s): ZIP;
6.
Study of charmonium production via the decay to pp¯ at s=13TeV / LHCb Collaboration
Charmonium production cross-section in proton-proton collisions is measured at the centre-of-mass energy s=13TeV using decays to pp¯ final state. The study is performed using a data sample corresponding to an integrated luminosity of 2.2fb1 collected in 2018 with the LHCb detector. [...]
arXiv:2407.14261; LHCb-PAPER-2024-004; CERN-EP-2024-165; LHCB-PAPER-2024-004.- Geneva : CERN, 2024-12-09 - 19 p. - Published in : Eur. Phys. J. C 84 (2024) 1274 Fulltext: LHCb_PAPER_2024-004 - PDF; 2407.14261 - PDF; document - PDF; Related data file(s): ZIP;
7.
Search for the rare decay of charmed baryon <math display="inline"><msubsup><mi mathvariant="normal">Λ</mi><mi>c</mi><mo>+</mo></msubsup></math> into the <math display="inline"><mi>p</mi><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>-</mo></msup></math> final state / LHCb Collaboration
A search for the nonresonant Λc+pμ+μ decay is performed using proton-proton collision data recorded at a centre-of-mass energy of 13 TeV by the LHCb experiment, corresponding to an integrated luminosity of 5.4 fb1. No evidence for the decay is found in the dimuon invariant-mass regions where the expected contributions of resonances is subdominant. [...]
arXiv:2407.11474; LHCb-PAPER-2024-005; CERN-EP-2024-158; LHCB-PAPER-2024-005.- Geneva : CERN, 2024-09-01 - 13 p. - Published in : Phys. Rev. D 110 (2024) 052007 Fulltext: LHCb-PAPER-2024-005 - PDF; 2407.11474 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
8.
Precision measurement of the Ξb baryon lifetime / LHCb Collaboration
A sample of pp collision data, corresponding to an integrated luminosity of 5.5 fb1 and collected by the LHCb experiment during Run 2, is used to measure the ratio of the lifetime of the Ξb baryon to that of the Λb0 baryon, rττΞb/τΛb0. The value rτRun2=1.076±0.013±0.006 is obtained, where the first uncertainty is statistical and the second systematic. [...]
arXiv:2406.12111; LHCb-PAPER-2024-010; CERN-EP-2024-139.- Geneva : CERN, 2024-10-01 - 16 p. - Published in : Phys. Rev. D 110 (2024) 072002 Fulltext: 2406.12111 - PDF; Publication - PDF; Xibm_Lifetime_Run2_Paper - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
9.
Comprehensive analysis of local and nonlocal amplitudes in the B0K0μ+μ decay / LHCb Collaboration
A comprehensive study of the local and nonlocal amplitudes contributing to the decay B0K0(K+π)μ+μ is performed by analysing the phase-space distribution of the decay products. The analysis is based on pp collision data corresponding to an integrated luminosity of 8.4fb1 collected by the LHCb experiment. [...]
arXiv:2405.17347; LHCb-PAPER-2024-011; CERN-EP-2024-122; LHCB-PAPER-2024-011.- Geneva : CERN, 2024-09-05 - 60 p.
Fulltext: document - PDF; LHCb-PAPER-2024-011 - PDF; 2405.17347 - PDF; Related data file(s): ZIP;
10.
Observation of New Charmonium or Charmoniumlike States in <math display="inline"><msup><mi>B</mi><mo>+</mo></msup><mo stretchy="false">→</mo><msup><mi>D</mi><mrow><mo>*</mo><mo>±</mo></mrow></msup><msup><mi>D</mi><mo>∓</mo></msup><msup><mi>K</mi><mo>+</mo></msup></math> Decays / LHCb Collaboration
A study of resonant structures in B+D+DK+ and B+DD+K+ decays is performed, using proton-proton collision data at centre-of-mass energies of s=7,8, and 13TeV recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb1. A simultaneous amplitude fit is performed to the two channels with contributions from resonances decaying to DD+ and D+D states linked by C-parity. [...]
arXiv:2406.03156; LHCb-PAPER-2023-047; CERN-EP-2024-096.- Geneva : CERN, 2024-09-27 - 14 p. - Published in : Phys. Rev. Lett. 133 (2024) 131902 Fulltext: LHCb-PAPER-2023-047_arxiv - PDF; 2406.03156 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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