CERN Accelerating science

CERN Document Server 2,050 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 4.51 δευτερόλεπτα. 
1.
Measurement of the χb(3P)χb(3P) mass and of the relative rate of χb1(1P)χb1(1P) and χb2(1P)χb2(1P) production / LHCb collaboration
The production of χbχb mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of s=7s=7 and 88 TeV and corresponding to an integrated luminosity of 3.0 fb11. The χbχb mesons are identified through their decays to Υ(1S)γΥ(1S)γ and Υ(2S)γΥ(2S)γ using photons that converted to e+ee+e pairs in the detector [...]
arXiv:1409.1408; LHCB-PAPER-2014-040; CERN-PH-EP-2014-206; LHCB-PAPER-2014-040-CERN_PH_EP_2014_206; LHCB-PAPER-2014-040; CERN-PH-EP-2014-206.- Geneva : CERN, 2014-10-14 - 22 p. - Published in : JHEP 10 (2014) 088 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF;
2.
Differential branching fraction and angular analysis of the decay B0sϕμ+μB0sϕμ+μ / LHCb Collaboration
The determination of the differential branching fraction and the first angular analysis of the decay B0sϕμ+μB0sϕμ+μ are presented using data, corresponding to an integrated luminosity of 1.0fb11.0fb1, collected by the LHCb experiment at s=7TeVs=7TeV. The differential branching fraction is determined in bins of q2q2, the invariant dimuon mass squared. [...]
arXiv:1305.2168; CERN-PH-EP-2013-078; LHCB-PAPER-2013-017; CERN-PH-EP-2013-078; LHCB-PAPER-2013-017.- Geneva : CERN, 2013-07-11 - 18 p. - Published in : JHEP 07 (2013) 084 APS published version, local copy: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
3.
Study of DJDJ meson decays to D+πD+π, D0π+D0π+ and D+πD+π final states in pppp collisions / LHCb collaboration
A study of D+πD+π, D0π+D0π+ and D+πD+π final states is performed using pp collision data, corresponding to an integrated luminosity of 1.0 fb1fb1, collected at a centre-of-mass energy of 7 TeV with the LHCb detector. The D1(2420)0D1(2420)0 resonance is observed in the D+πD+π final state and the D2(2460)D2(2460) resonance is observed in the D+πD+π, D0π+D0π+ and D+πD+π final states. [...]
arXiv:1307.4556; CERN-PH-EP-2013-122; LHCB-PAPER-2013-026; CERN-PH-EP-2013-122; LHCB-PAPER-2013-026.- Geneva : CERN, 2013 - 26 p. - Published in : JHEP 09 (2013) 145 APS published version, local copy: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Rivet analyses reference
4.
Observation of the decay B+cJ/ψK+Kπ+B+cJ/ψK+Kπ+ / LHCb Collaboration
The decay B+cJ/ψK+Kπ+B+cJ/ψK+Kπ+ is observed for the first time, using proton-proton collisions collected with the LHCb detector corresponding to an integrated luminosity of 3 fb11. A signal yield of 78±±14 decays is reported with a significance of 6.2 standard deviations. [...]
arXiv:1309.0587; CERN-PH-EP-2013-165; LHCB-PAPER-2013-047; LHCB-PAPER-2013-047; CERN-PH-EP-2013-165.- Geneva : CERN, 2013 - 16 p. - Published in : JHEP 11 (2013) 094 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
5.
Study of χbχb meson production in pp collisions at s=7s=7 and 8TeV and observation of the decay χb(3P)Υ(3S)γχb(3P)Υ(3S)γ / LHCb collaboration
A study of χbχb meson production at LHCb is performed on proton-proton collision data, corresponding to 3.0fb11 of integrated luminosity collected at centre-of-mass energies s=7s=7 and 8TeV. The fraction of Υ(nS)Υ(nS) mesons originating from χbχb decays is measured as a function of the ΥΥ transverse momentum in the rapidity range 2.0<yΥ<4.52.0<yΥ<4.5. [...]
arXiv:1407.7734; CERN-PH-EP-2014-178; LHCB-PAPER-2014-031; CERN-PH-EP-2014-178; LHCB-PAPER-2014-031.- Geneva : CERN, 2014-10-08 - 13 p. - Published in : Eur. Phys. J. C 74 (2014) 3092 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
6.
Measurement of the charge asymmetry in B±ϕK±B±ϕK± and search for B±ϕπ±B±ϕπ± decays / LHCb collaboration
The CP-violating charge asymmetry in B±ϕK±B±ϕK± decays is measured in a sample of pppp collisions at 7 TeV centre-of-mass energy, corresponding to an integrated luminosity of 1.0 fb11 collected by the LHCb experiment. The result is ACP(B±ϕK±)=0.022±0.021±0.009ACP(B±ϕK±)=0.022±0.021±0.009, where the first uncertainty is statistical and the second systematic. [...]
arXiv:1309.3742; LHCB-PAPER-2013-048; CERN-PH-EP-2013-166; LHCB-PAPER-2013-048; CERN-PH-EP-2013-166.- Geneva : CERN, 2014-01-20 - 10 p. - Published in : Phys. Lett. B 728 (2014) 85-94 APS published version, local copy: PDF; Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: arXiv:1309.3742 - PDF; S0370269313009398 - XML; Related data file(s): ZIP; Related supplementary data file(s): ZIP;
7.
Production of J/ψJ/ψ and ΥΥ mesons in pppp collisions at ss = 8 TeV / LHCb Collaboration
The production of J/ψJ/ψ and ΥΥ mesons in pppp collisions at ss = 8 TeV is studied with the LHCb detector. The J/ψJ/ψ and ΥΥ mesons are reconstructed in the μ+μμ+μ decay mode and the signal yields are determined to fit to the μ+μμ+μ invariant mass distributions. [...]
arXiv:1304.6977; CERN-PH-EP-2013-071; LHCB-PAPER-2013-016; CERN-PH-EP-2013-071; LHCB-PAPER-2013-016.- Geneva : CERN, 2013-06 - 35 p. - Published in : JHEP 06 (2013) 064 APS published version, local copy: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
8.
Measurement of the branching fractions of the decays B0s¯D0Kπ+B0s¯¯¯¯¯D0Kπ+ and B0¯D0K+πB0¯¯¯¯¯D0K+π / LHCb Collaboration
The first observation of the decay B0s¯D0Kπ+B0s¯¯¯¯¯D0Kπ+ is reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0fb1 of pp collisions, collected with the LHCb detector [...]
arXiv:1304.6317; LHCB-PAPER-2013-022; CERN-PH-EP-2013-070; LHCB-PAPER-2013-022; CERN-PH-EP-2013-070.- Geneva : CERN, 2013-06-20 - 10 p. - Published in : Phys. Rev. D 87 (2013) 112009 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
9.
Measurement of the polarization amplitudes in B0J/ψK(892)0 decays / LHCb collaboration
An analysis of the decay B0J/ψK(892)0 is presented using data, corresponding to an integrated luminosity of 1.0 fb1, collected in pp collisions at a centre-of-mass energy of 7TeV with the LHCb detector. The polarisation amplitudes and the corresponding phases are measured to be |A|2=0.227±0.004(stat.)±0.011(syst.),|A|2=0.201±0.004(stat.)±0.008(syst.),δ[rad]=2.94±0.02(stat.)±0.03(syst.),δ[rad]=2.94±0.02(stat.)±0.02(syst.). Comparing B0J/ψK(892)0 and ¯B0J/ψ¯K(892)0 decays, no evidence for direct CP violation is found..
arXiv:1307.2782; CERN-PH-EP-2013-104; LHCB-PAPER-2013-023; CERN-PH-EP-2013-104; LHCB-PAPER-2013-023.- Geneva : CERN, 2013-09-03 - 12 p. - Published in : Phys. Rev. D 88 (2013) 052002 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
10.
First observation of the decay B+cJ/ψK+ / LHCb collaboration
The decay B+cJ/ψK+ is observed for the first time using a data sample, corresponding to an integrated luminosity of 1.0 fb1, collected by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. A yield of 46±12 events is reported, with a significance of 5.0 standard deviations. [...]
arXiv:1306.6723; CERN-PH-EP-2013-106; LHCB-PAPER-2013-021; CERN-PH-EP-2013-106; LHCB-PAPER-2013-021.- Geneva : CERN, 2013 - 14 p. - Published in : JHEP 09 (2013) 075 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint

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