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1.
Measurement of the B0Dτ+ντB0Dτ+ντ branching fraction using three-prong τ decays / LHCb Collaboration
The ratio of branching fractions R(D)B(B0Dτ+ντ)/B(B0Dμ+νμ) is measured using a data sample of proton-proton collisions collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb1. The τ lepton is reconstructed with three charged pions in the final state. [...]
arXiv:1711.02505; CERN-EP-2017-256; LHCB-PAPER-2017-027.- 2018-04-26 - 26 p. - Published in : Phys. Rev. D 97 (2018) 072013 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
2.
Measurements of the branching fractions of Λ+cpππ+, Λ+cpKK+, and Λ+cpπK+ / LHCb Collaboration
The ratios of the branching fractions of the decays Λ+cpππ+, Λ+cpKK+, and Λ+cpπK+ with respect to the Cabibbo-favoured Λ+cpKπ+ decay are measured using proton-proton collision data collected with the LHCb experiment at a 7 TeV centre-of-mass energy and corresponding to an integrated luminosity of 1.0 fb1: B(Λ+cpππ+)B(Λ+cpKπ+)=(7.44±0.08±0.18)%,B(Λ+cpKK+)B(Λ+cpKπ+)=(1.70±0.03±0.03)%,B(Λ+cpπK+)B(Λ+cpKπ+)=(0.165±0.015±0.005)%, where the uncertainties are statistical and systematic, respectively. These results are the most precise measurements of these quantities to date. [...]
arXiv:1711.01157; CERN-EP-2017-247; LHCB-PAPER-2017-026; LHCB-PAPER-2017-026.- Geneva : CERN, 2018-03-08 - 22 p. Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
3.
First observation of forward Zbˉb production in pp collisions at s=8 TeV / LHCb Collaboration
The decay Zbˉb is reconstructed in pp collision data, corresponding to 2 fb1 of integrated luminosity, collected by the LHCb experiment at a centre-of-mass energy of s=8 TeV. The product of the Z production cross-section and the Zbˉb branching fraction is measured for candidates in the fiducial region defined by two particle-level b-quark jets with pseudorapidities in the range 2.2<η<4.2, with transverse momenta pT>20 GeV and dijet invariant mass in the range 45<mjj<165 GeV. [...]
arXiv:1709.03458; LHCB-PAPER-2017-024; CERN-EP-2017-211; LHCB-PAPER-2017-024.- Geneva : CERN, 2018-01-10 - 10 p. - Published in : Phys. Lett. B 776 (2018) 430-439 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
4.
Measurement of the shape of the Λ0bΛ+cμ¯νμ differential decay rate / LHCb Collaboration
A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay Λ0bΛ+cμ¯ν is reported, using data corresponding to 3fb1 collected with the LHCb detector in proton-proton collisions. The Λ+cμ¯ν(+ anything) final states are reconstructed through the detection of a muon and a Λ+c baryon decaying into pKπ+, and the decays Λ0bΛ+cπ+πμ¯ν are used to determine contributions from Λ0bΛ+cμˉν decays. [...]
arXiv:1709.01920; CERN-EP-2017-164; LHCB-PAPER-2017-016; CERN-PH-EP-2017-164.- Geneva : CERN, 2017-12-13 - 15 p. - Published in : Phys. Rev. D 96 (2017) 112005 Fulltext: arXiv:1709.01920 - PDF; 10.1103_PhysRevD.96.112005 - PDF; Related data file(s): ZIP; External link: Figures, tables and other information
5.
Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at s = 7 TeV / LHCb Collaboration
Bose-Einstein correlations of same-sign charged pions, produced in proton-proton collisions at a 7 TeV centre-of-mass energy, are studied using a data sample collected by the LHCb experiment. The signature for Bose-Einstein correlations is observed in the form of an enhancement of pairs of like-sign charged pions with small four-momentum difference squared. [...]
arXiv:1709.01769; CERN-EP-2017-203; LHCB-PAPER-2017-025; LHCB-PAPER-2017-025.- Geneva : CERN, 2017-12-06 - 24 p. - Published in : JHEP 12 (2017) 025 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
6.
First observation of the rare purely baryonic decay B0pˉp / LHCb Collaboration
The first observation of the decay of a B0 meson to a purely baryonic final state, B0pˉp, is reported. The proton-proton collision data sample used was collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponds to an integrated luminosity of 3.0 fb1. [...]
arXiv:1709.01156; LHCB-PAPER-2017-022; CERN-EP-2017-190; LHCB-PAPER-2017-022.- Geneva : CERN, 2017-12-04 - 10 p. - Published in : Phys. Rev. Lett. 119 (2017) 232001 Fulltext: 10.1103_PhysRevLett.119.232001 - PDF; arXiv:1709.01156 - PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
7.
Measurement of the Υ polarizations in pp collisions at s=7 and 8TeV / LHCb Collaboration
The polarization of the Υ(1S), Υ(2S) and Υ(3S)mesons, produced in pp collisions at centre-of-mass energies s=7 and 8TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2fb1, respectively. The measurements are performed in three polarization frames, using Υμ+μ decays in the kinematic region of the transverse momentum pT(Υ)<30 GeV/c, and rapidity 2.2<y(Υ)<4.5. [...]
arXiv:1709.01301; CERN-EP-2017-210; LHCB-PAPER-2017-028; LHCB-PAPER-2017-028.- Geneva : CERN, 2017-12-20 - 61 p. - Published in : JHEP 12 (2017) 110 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
8.
Measurement of the ratio of the B0Dτ+ντ and B0Dμ+νμ branching fractions using three-prong τ-lepton decays / LHCb Collaboration
The ratio of branching fractions R(D)B(B0Dτ+ντ)/B(B0Dμ+νμ) is measured using a data sample of proton-proton collisions collected with the LHCb detector at center-of-mass energies of 7 and 8 Tev, corresponding to an integrated luminosity of 3 fb1. For the first time R(D) is determined using the τ lepton decays with three charged pions in the final state. [...]
arXiv:1708.08856; LHCB-PAPER-2017-017; CERN-EP-2017-212; LHCB-PAPER-2017-017.- Geneva : CERN, 2018-04-26 - 11 p. - Published in : Phys. Rev. Lett. 120 (2018) 171802 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
9.
Study of bˉb correlations in high energy proton-proton collisions / LHCb Collaboration
Kinematic correlations for pairs of beauty hadrons, produced in high energy proton-proton collisions, are studied. The data sample used was collected with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV and corresponds to an integrated luminosity of 3 fb1. [...]
arXiv:1708.05994; CERN-EP-2017-178; LHCB-PAPER-2017-020; LHCB-PAPER-2017-020.- Geneva : CERN, 2017-11-08 - 29 p. Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
10.
Search for baryon-number-violating Ξ0b oscillations / LHCb Collaboration
A search for baryon-number-violating Ξ0b oscillations is performed with a sample of pp collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 3 fb1. The baryon number at the moment of production is identified by requiring that the Ξ0b come from the decay of a resonance ΞbΞ0bπ or ΞbΞ0bπ, and the baryon number at the moment of decay is identified from the final state using the decays Ξ0bΞ+cπ, Ξ+cpKπ+. [...]
arXiv:1708.05808; LHCB-PAPER-2017-023; CERN-EP-2017-189; LHCB-PAPER-2017-023.- Geneva : CERN, 2017-11-03 - 9 p. - Published in : Phys. Rev. Lett. 119 (2017) 181807 Fulltext: 10.1103_PhysRevLett.119.181807 - PDF; arXiv:1708.05808 - PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information

CERN Document Server : Pronađeno je 452 zapisa   1 - 10slijedećikraj  idi na zapis:
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