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CERN Document Server 找到 91 笔记录  1 - 10下一个最後  跳到记录: 检索需时 0.55 秒. 
1.
Model-independent confirmation of the $Z(4430)^-$ state / LHCb collaboration
The decay $B^0\to \psi(2S) K^+\pi^-$ is analyzed using $\rm 3~fb^{-1}$ of $pp$ collision data collected with the LHCb detector. A model-independent description of the $\psi(2S) \pi$ mass spectrum is obtained, using as input the $K\pi$ mass spectrum and angular distribution derived directly from data, without requiring a theoretical description of resonance shapes or their interference. [...]
arXiv:1510.01951; CERN-PH-EP-2015-244; LHCB-PAPER-2015-038; CERN-PH-EP-2015-244; LHCB-PAPER-2015-038.- 2015-12-29 - 15 p. - Published in : Phys. Rev. D 92 (2015) 112009 APS Open Access article: PDF; Fulltext: 10.1103_PhysRevD.92.112009 - PDF; arXiv:1510.01951 - PDF; External link: Figures, tables and other information
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2.
Integration of Cloud resources in the LHCb Distributed Computing / Ubeda Garcia, Mario (CERN) ; Mendez Munoz, V (PIC, Bellaterra ; Barcelona, IFAE) ; Stagni, Federico (Humboldt U., Berlin) ; Cabarrou, Baptiste (CERN) ; Rauschmayr, Nathalie (CERN) ; Charpentier, Philippe (CERN) ; Closier, Joel (CERN)
This contribution describes how Cloud resources have been integrated in the LHCb Distributed Computing. LHCb is using its specific Dirac extension (LHCbDirac) as an interware for its Distributed Computing. [...]
2014 - 7 p. - Published in : J. Phys.: Conf. Ser. 513 (2014) 032099
In : 20th International Conference on Computing in High Energy and Nuclear Physics 2013, Amsterdam, Netherlands, 14 - 18 Oct 2013, pp.032099
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3.
Search for long-lived heavy charged particles using a ring imaging Cherenkov technique at LHCb / LHCb collaboration
A search is performed for heavy long-lived charged particles using 3.0 fb$^{-1}$ of pp collisions collected at $\sqrt{s}$= 7 and 8 TeV with the LHCb detector. The search is mainly based on the response of the ring imaging Cherenkovdetectors to distinguish the heavy, slow-moving particles from muons. [...]
arXiv:1506.09173; CERN-PH-EP-2105-139; LHCB-PAPER-2015-002; CERN-PH-EP-2105-139; LHCB-PAPER-2015-002.- Geneva : CERN, 2015-12-15 - 24 p. - Published in : Eur. Phys. J. C 75 (2015) 595 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF;
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4.
Measurement of the forward $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s}$ = 7 TeV / LHCb collaboration
A measurement of the production cross-section for $Z$ bosons that decay to muons is presented. The data were recorded by the LHCb detector during $pp$ collisions at a centre-of-mass energy of 7 TeV, and correspond to an integrated luminosity of 1.0 fb$^{-1}$ [...]
arXiv:1505.07024; LHCB-PAPER-2015-001; CERN-PH-EP-2015-102; LHCB-PAPER-2015-001; CERN-PH-EP-2015-102.- Geneva : CERN, 2015-08-10 - 41 p. - Published in : JHEP 08 (2015) 039 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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5.
Dalitz plot analysis of $B^0 \to \overline{D}^0 \pi^+\pi^-$ decays / LHCb Collaboration
The resonant substructures of $B^0 \to \overline{D}^0 \pi^+\pi^-$ decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of $pp$ collisions collected by the LHCb detector is used. [...]
arXiv:1505.01710; CERN-PH-EP-2015-110; LHCB-PAPER-2014-070; LHCB-PAPER-2014-070; CERN-PH-EP-2015-110.- Geneva : CERN, 2015-08-07 - 40 p. - Published in : Phys. Rev. D 92 (2015) 032002 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
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6.
Observation of the $B^0_s\to\eta'\eta'$ decay / LHCb collaboration
The first observation of the $B^0_s\to\eta'\eta'$ decay is reported. The study is based on a sample of proton-proton collisions corresponding to $3.0$ ${\rm fb^{-1}}$ of integrated luminosity collected with the LHCb detector. [...]
arXiv:1503.07483; LHCB-PAPER-2014-065; CERN-PH-EP-2015-073; LHCB-PAPER-2014-065-; LHCB-PAPER-2014-065; CERN-PH-EP-2015-073.- Geneva : CERN, 2015-07-28 - 9 p. - Published in : Phys. Rev. Lett. 115 (2015) 051801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
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7.
Measurement of $CP$ violation in $B^0 \rightarrow J/\psi K^0_S$ decays / LHCb collaboration
Measurements are presented of the $CP$ violation observables $S$ and $C$ in the decays of $B^0$ and $\overline{B}{}^0$ mesons to the $J/\psi K^0_S$ final state. The data sample corresponds to an integrated luminosity of $3.0\,\text{fb}^{-1}$ collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of $7$ and $8\,\text{TeV}$. [...]
arXiv:1503.07089; LHCB-PAPER-2015-004; CERN-PH-EP-2015-076; LHCB-PAPER-2015-004; CERN-PH-EP-2015-076.- Geneva : CERN, 2015-07-14 - 9 p. - Published in : Phys. Rev. Lett. 115 (2015) 031601 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
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8.
Measurement of the time-dependent CP asymmetries in $B_s^0\rightarrow J/\psi K_{\rm S}^0$ / LHCb Collaboration
The first measurement of decay-time-dependent CP asymmetries in the decay $B_s^0\rightarrow J/\psi K_{\rm S}^0$ and an updated measurement of the ratio of branching fractions $\mathcal{B}(B_s^0\rightarrow J/\psi K_{\rm S}^0)/\mathcal{B}(B_d^0\rightarrow J/\psi K_{\rm S}^0)$ are presented. The results are obtained using data corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. [...]
arXiv:1503.07055; CERN-PH-EP-2015-064; LHCB-PAPER-2015-005; LHCB-PAPER-2015-005; CERN-PH-EP-2015-064.- Geneva : CERN, 2015-06-18 - 23 p. - Published in : JHEP 06 (2015) 131 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF;
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9.
Measurement of $CP$ asymmetries and polarisation fractions in $B_s^0 \rightarrow K^{*0}\overline{K}{}^{*0}$ decays / LHCb Collaboration
An angular analysis of the decay $B_s^0 \rightarrow K^{*0}\overline{K}{}^{*0}$ is performed using $pp$ collisions corresponding to an integrated luminosity of $1.0$ ${fb}^{-1}$ collected by the LHCb experiment at a centre-of-mass energy $\sqrt{s} = 7$ TeV. A combined angular and mass analysis separates six helicity amplitudes and allows the measurement of the longitudinal polarisation fraction $f_L = 0.201 \pm 0.057 {(stat.)} \pm 0.040{(syst.)}$ for the $B_s^0 \rightarrow K^*(892)^0 \overline{K}{}^*(892)^0$ decay. [...]
arXiv:1503.05362; LHCB-PAPER-2014-068; CERN-PH-EP-2015-058; LHCB-PAPER-2014-068; CERN-PH-EP-2015-058.- Geneva : CERN, 2015-07-30 - 29 p. - Published in : JHEP 07 (2015) 166 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
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10.
First observation and amplitude analysis of the $B^{-}\to D^{+}K^{-}\pi^{-}$ decay / LHCb collaboration
The $B^{-}\to D^{+}K^{-}\pi^{-}$ decay is observed in a data sample corresponding to $3.0~\rm{fb}^{-1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. Its branching fraction is measured to be ${\cal B}(B^{-}\to D^{+}K^{-}\pi^{-}) = (7.31 \pm 0.19 \pm 0.22 \pm 0.39) \times 10^{-5}$ where the uncertainties are statistical, systematic and from the branching fraction of the normalisation channel $B^{-}\to D^{+}\pi^{-}\pi^{-}$, respectively. [...]
arXiv:1503.02995; CERN-PH-EP-2015-051; LHCB-PAPER-2015-007.- Geneva : CERN, 2015-05-05 - 24 p.
APS Open Access article: PDF; Erratum: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
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