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1.
Measurement of b-hadron branching fractions for two-body decays into charmless charged hadrons / LHCb Collaboration
Based on data corresponding to an integrated luminosity of 0.37 fb^-1 collected by the LHCb experiment in 2011, the following ratios of branching fractions are measured: B(B0 -> pi+ pi-) / B(B0 -> K+pi-) = 0.262 +/- 0.009 +/- 0.017, (fs/fd) * B(Bs -> K+K-) / B(B^0 -> K+pi-) = 0.316 +/- 0.009 +/- 0.019, (fs/fd) * B(Bs ->pi+ K-) / B(B0 -> K+pi-) = 0.074 +/- 0.006 +/- 0.006, (fd/fs) * B(B0 -> K+K-) / B(Bs -> K+K-) = 0.018 {+ 0.008 - 0.007} +/- 0.009, (fs/fd) * B(Bs -> pi+pi-) / B(B0 -> pi+pi-) = 0.050 {+ 0.011 - 0.009} +/- 0.004, B(Lambda_b -> p pi-) / B(Lambda_b -> p K-) = 0.86 +/- 0.08 +/- 0.05, where the first uncertainties are statistical and the second systematic. Using the current world average of B(B0 -> K+pi-) and the ratio of the strange to light neutral B meson production fs/fd measured by LHCb, we obtain: B(B0 -> pi+pi-) = (5.08 +/- 0.17 +/- 0.37) x 10^-6, B(Bs -> K+K-) = (23.0 +/- 0.7 +/- 2.3) x 10^-6, B(Bs -> pi+K-) = (5.4 +/- 0.4 +/- 0.6) x 10^-6, B(B0 -> K+K-) = (0.11 {+ 0.05 - 0.04} +/- 0.06) x 10^-6, B(Bs -> pi+pi-) = (0.95 {+ 0.21 - 0.17} +/- 0.13) x 10^-6. [...]
arXiv:1206.2794; LHCB-PAPER-2012-002; CERN-PH-EP-2012-161; LHCB-PAPER-2012-002; CERN-PH-EP-2012-161.- Geneva : CERN, 2012 - 15 p. - Published in : JHEP 10 (2012) 037 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
2.
Observation of double charm production involving open charm in pp collisions at s=7 TeV / LHCb collaboration
The production of J/ψ mesons accompanied by open charm, and of pairs of open charm hadrons are observed in pp collisions at a centre-of-mass energy of 7 TeV using an integrated luminosity of 355pb1 collected with the LHCb detector. Model independent measurements of absolute cross-sections are given together with ratios to the measured J/ψ and open charm cross-sections. [...]
arXiv:1205.0975; CERN-PH-EP-2012-109; LHCB-PAPER-2012-003; CERN-PH-EP-2012-109; LHCB-PAPER-2012-003.- 2012 - 41 p.
Addendum: PDF; Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
3.
Measurement of the Bs0J/ψKS0 branching fraction / LHCb collaboration
The Bs0J/ψKS0 branching fraction is measured in a data sample corresponding to 0.41fb1 of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin2β measurement from B0J/ψKS0 The time-integrated branching fraction is measured to be BF(Bs0J/ψKS0)=(1.83±0.28)×105. [...]
arXiv:1205.0934; CERN-PH-EP-2012-115; LHCB-PAPER-2011-041; CERN-PH-EP-2012-115; LHCB-PAPER-2011-041.- 2013-07-16 - 8 p. - Published in : Phys. Lett. B 713 (2012) 172-179 Elsevier Open Access article : PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
4.
Measurement of relative branching fractions of B decays to ψ(2S) and J/ψ mesons / LHCb collaboration
The relative rates of B-meson decays into J/ψ and ψ(2S) mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching fractions (B) are measured to be B(B+ψ(2S)K+)B(B+J/ψK+)=0.594±0.006(stat)±0.016(syst)±0.015(Rψ),B(B0ψ(2S)K0)B(B0J/ψK0)=0.476±0.014(stat)±0.010(syst)±0.012(Rψ),Bs0(Bs0ψ(2S)ϕ)B(Bs0J/ψϕ)=0.489±0.026(stat)±0.021(syst)±0.012(Rψ), where the third uncertainty is from the ratio of the ψ(2S) and J/ψ branching fractions to μμ..
arXiv:1205.0918; CERN-PH-EP-2012-113; LHCB-PAPER-2012-010; CERN-PH-EP-2012-113; LHCB-PAPER-2012-010.- 2012-08-29 - 14 p. - Published in : Eur. Phys. J. C 72 (2012) 2118 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
5.
Measurement of the Ds+Ds production asymmetry in 7 TeV pp collisions / LHCb collaboration
Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A_P, between Ds+ and Ds- mesons is studied using the \phi\pi(+/-) decay mode in a data sample of 1.0/fb collected with the LHCb detector. [...]
arXiv:1205.0897; CERN-PH-EP-2012-114; LHCB-PAPER-2012-009; CERN-PH-EP-2012-114; LHCB-PAPER-2012-009.- 2013-07-16 - 10 p. - Published in : Phys. Lett. B 713 (2012) 186-195 Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
6.
Measurement of the CP-violating phase ϕs in B¯s0J/ψπ+π decays / LHCb collaboration
Measurement of the mixing-induced CP-violating phase ϕs in Bs0 decays is of prime importance in probing new physics. Here 7421±105 signal events from the dominantly CP-odd final state J/ψπ+π are selected in 1 fb1 of pp collision data collected at sqrt{s} = 7 TeV with the LHCb detector. [...]
arXiv:1204.5675; CERN-PH-EP-2012-107; LHCb-PAPER-2012-006; LHCb-PAPER-2012-006; CERN-PH-EP-2012-107.- 2013-07-16 - 9 p. - Published in : Phys. Lett. B 713 (2012) 378-386 Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
7.
Analysis of the resonant components in B¯s0J/ψπ+π / LHCb collaboration
The decay Bs0J/ψπ+π can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. [...]
arXiv:1204.5643; CERN-PH-EP-2012-111; LHCB-PAPER-2012-005; CERN-PH-EP-2012-111; LHCB-PAPER-2012-005.- 2012 - 28 p. - Published in : Phys. Rev. D 86 (2012) 052006 APS Open Access article : PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
8.
Measurement of the branching fractions of the decays Bs0DsK± and Bs0Dsπ+ / LHCb Collaboration
The decay mode Bs0DsK± allows for one of the theoretically cleanest measurements of the CKM angle γ through the study of time-dependent CP violation. This paper reports a measurement of its branching fraction relative to the Cabibbo-favoured mode Bs0Dsπ+ based on a data sample of 0.37 fb1 proton-proton collisions at s=7 TeV collected in 2011 with the LHCb detector. [...]
arXiv:1204.1237; CERN-PH-EP-2012-091; LHCB-PAPER-2011-022; CERN-PH-EP-2012-091; LHCB-PAPER-2011-022.- Geneva : CERN, 2012 - 4 p. - Published in : JHEP 06 (2012) 115 Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article : PDF; External link: Preprint
9.
Measurement of the ratio of prompt χc to J/ψ production in pp collisions at s=7 TeV / LHCb Collaboration
The prompt production of charmonium χc and J/ψ states is studied in proton-proton collisions at a centre-of-mass energy of s=7 TeV at the Large Hadron Collider. The χc and J/ψ mesons are identified through their decays χcJ/ψγ and J/ψμ+μ using 36 pb1 of data collected by the LHCb detector in 2010. [...]
arXiv:1204.1462; CERN-PH-EP-2012-068; LHCB-PAPER-2011-030; CERN-PH-EP-2012-068; LHCB-PAPER-2011-030.- Geneva : CERN, 2012-12-05 - 10 p. - Published in : Phys. Lett. B 718 (2012) 431-440 Elsevier Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: DURHAM
10.
First observation of decay Bc+J/ψπ+ππ+ / LHCb Collaboration
The decay Bc+ --> J/psi pi+pi-pi+ is observed for the first time, using 0.8 fb-1 of pp collisions at sqrt{s}=7 TeV collected by the LHCb experiment. The ratio of branching fractions BR(Bc+ --> J/psi pi+pi-pi+)/BR(B_c+ --> J/psi pi+) is measured to be 2.41+-0.30+-0.33, where the first uncertainty is statistical and the second systematic. [...]
arXiv:1204.0079; LHCB-PAPER-2011-044; CERN-PH-EP-2012-090; LHCB-PAPER-2011-044; CERN-PH-EP-2012-090.- Geneva : CERN, 2012 - 14 p. - Published in : Phys. Rev. Lett. 108 (2012) 251802 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint

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12 Paterson, S
62 Paterson, S K
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