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CERN Document Server Sök i 251 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.85 sekunder. 
1.
Measurement of the ratio of branching fractions of the decays Λ0bψ(2S)Λ and Λ0bJ/ψΛ / LHCb Collaboration
Using pp collisions corresponding to 3fb1 integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8TeV, the ratio of branching fractions B(Λ0bψ(2S)Λ)/B(Λ0bJ/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B) is determined. The first uncertainty is statistical, the second is systematic and the third is due to the external branching fractions used..
arXiv:1902.02092; LHCb-PAPER-2017-041; CERN-EP-2019-003.- Geneva : CERN, 2019-03-22 - 16 p. - Published in : JHEP 03 (2019) 126 Article from SCOAP3: PDF; Fulltext: LHCb-Paper-2017-041 - PDF; 1902.02092 - PDF; Related data file(s): ZIP;
2.
Search for CP violation using triple product asymmetries in Λ0bpKπ+π, Λ0bpKK+K and Ξ0bpKKπ+ decays / LHCb Collaboration
A search for CP and P violation using triple-product asymmetries is performed with Λ0bpKπ+π, Λ0bpKK+K and Ξ0bpKKπ+ decays. The data sample corresponds to integrated luminosities of 1.0fb1 and 2.0fb1, recorded with the LHCb detector at centre-of-mass energies of 7TeV and 8TeV, respectively. [...]
arXiv:1805.03941; LHCB-PAPER-2018-001; CERN-EP-2018-081; LHCb-PAPER-2018-001.- 2018-08-09 - 25 p. - Published in : JHEP 08 (2018) 039 Article from SCOAP3: PDF; Fulltext: arXiv:1805.03941 - PDF; 1805.03941 - PDF; Related data file(s): ZIP;
3.
Search for B+c decays to two charm mesons / LHCb Collaboration
A search for decays of B+c mesons to two charm mesons is performed for the first time using data corresponding to an integrated luminosity of 3.0 fb1, collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. The decays considered are B+cD()+(s)¯D()0 and B+cD()+(s)D()0, which are normalised to high-yield B+D+(s)¯D0 decays. [...]
arXiv:1712.04702; LHCB-PAPER-2017-045; CERN-EP-2017-313; LHCB-PAPER-2017-045.- Geneva : CERN, 2018-05 - 20 p. - Published in : Nucl. Phys. B 930 (2018) 563-582 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
4.
Measurement of forward top pair production in the dilepton channel in pp collisions at s=13 TeV / LHCb Collaboration
Forward top quark pair production is studied in pp collisions in the μeb final state using a data sample corresponding to an integrated luminosity of 1.93 fb1 collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The cross-section is measured in a fiducial region where both leptons have a transverse momentum greater than 20 GeV and a pseudorapidity between 2.0 and 4.5. [...]
arXiv:1803.05188; LHCb-PAPER-2017-050; CERN-EP-2018-022; LHCB-PAPER-2017-050; LHCB-PAPER-2017-050.- Geneva : CERN, 2018-08-28 - 19 p. - Published in : JHEP 08 (2018) 174 Article from SCOAP3: PDF; Fulltext: arXiv:1803.05188 - PDF; 1803.05188 - PDF; Related data file(s): TGZ; External link: Figures, tables and other information
5.
Evidence for the rare decay Σ+pμ+μ / LHCb Collaboration
A search for the rare decay Σ+pμ+μ is performed using pp collision data recorded by the LHCb experiment at centre-of-mass energies s=7 and 8 TeV, corresponding to an integrated luminosity of 3fb1. An excess of events is observed with respect to the background expectation, with a signal significance of 4.1 standard deviations. [...]
arXiv:1712.08606; LHCB-PAPER-2017-049; CERN-EP-2017-319.- Geneva : CERN, 2018-06-01 - 10 p. - Published in : Phys. Rev. Lett. 120 (2018) 221803 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
6.
Studies of the resonance structure in D0Kπ±π±π decays / LHCb Collaboration
Amplitude models are constructed to describe the resonance structure of D0Kπ+π+π and D0K+πππ+ decays using pp collision data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb experiment, corresponding to an integrated luminosity of 3.0fb1. The largest contributions to both decay amplitudes are found to come from axial resonances, with decay modes D0a1(1260)+K and D0K1(1270/1400)+π being prominent in D0Kπ+π+π and D0K+πππ+, respectively. [...]
arXiv:1712.08609; LHCB-PAPER-2017-040; CERN-EP-2017-314.- Geneva : CERN, 2018-06-02 - 31 p. - Published in : Eur. Phys. J. C C78 (2018) 443 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
7.
First measurement of the CP-violating phase ϕd¯ds in B0s(K+π)(Kπ+) decays / LHCb Collaboration
A flavour-tagged decay-time-dependent amplitude analysis of B0s(K+π)(Kπ+) decays is presented in the K±π mass range from 750 to 1600 MeV/c2. The analysis uses pp collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb1. [...]
arXiv:1712.08683; LHCB-PAPER-2017-048; CERN-EP-2017-320.- Geneva : CERN, 2018-03-23 - 33 p. - Published in : JHEP 03 (2018) 140 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
8.
Search for the rare decay Λ+cpμ+μ / LHCb Collaboration
A search for the flavor-changing neutral-current decay Λ+cpμ+μ is reported using a data set corresponding to an integrated luminosity of 3.0fb1 collected by the LHCb collaboration. No significant signal is observed outside of the dimuon mass regions around the ϕ and ω resonances and an upper limit is placed on the branching fraction of B(Λ+cpμ+μ)<7.7 (9.6)×108 at 90% (95%) confidence level. [...]
arXiv:1712.07938; CERN-EP-2017-325; LHCB-PAPER-2017-039.- 2018-05-05 - 10 p. - Published in : Phys. Rev. D 97 (2018) 091101 Article from SCOAP3: PDF; Fulltext: PDF; External link: Figures, tables and other information
9.
Search for weakly decaying b-flavored pentaquarks / LHCb Collaboration
Investigations of the existence of pentaquark states containing a single b (anti)quark decaying weakly into four specific final states J/ψK+πp, J/ψKπp, J/ψKπ+p, and J/ψϕ(1020)p are reported. The data sample corresponds to an integrated luminosity of 3.0/fb in 7 and 8 TeV pp collisions acquired with the LHCb detector. [...]
arXiv:1712.08086; CERN-EP-2017-329; LHCB-PAPER-2017-043; LHCB-PAPER-2017-043.- Geneva : CERN, 2018-02-17 - 11 p. - Published in : Phys. Rev. D 97 (2018) 032010 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
10.
Measurement of CP asymmetry in B0sDsK± decays / LHCb Collaboration
We report the measurements of the CP-violating parameters in B0sDsK± decays observed in pp collisions, using a data set corresponding to an integrated luminosity of 3.0fb1 recorded with the LHCb detector. We measure Cf=0.73±0.14±0.05, AΔΓf=0.39±0.28±0.15, AΔΓ¯f=0.31±0.28±0.15, Sf=0.52±0.20±0.07, S¯f=0.49±0.20±0.07, where the uncertainties are statistical and systematic, respectively. [...]
arXiv:1712.07428; LHCB-PAPER-2017-047; CERN-EP-2017-315; LHCB-PAPER-2017-047.- Geneva : CERN, 2018-03-12 - 28 p. - Published in : JHEP 03 (2018) 059 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information

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