CERN Accelerating science

CERN Document Server 57 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 0.55 δευτερόλεπτα. 
1.
Model-independent confirmation of the Z(4430) state / LHCb collaboration
The decay B0ψ(2S)K+π is analyzed using 3 fb1 of pp collision data collected with the LHCb detector. A model-independent description of the ψ(2S)π mass spectrum is obtained, using as input the Kπ 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
2.
Search for the lepton flavour violating decay τμμ+μ / LHCb Collaboration
A search for the lepton flavour violating decay τμμ+μ is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0 fb1 of proton-proton collisions at a centre-of-mass energy of 7 TeV and 2.0 fb1 at 8 TeV. [...]
arXiv:1409.8548; LHCB-PAPER-2014-052; CERN-PH-EP-2014-236; LHCB-PAPER-2014-052; CERN-PH-EP-2014-236.- Geneva : CERN, 2015-02-18 - 19 p. - Published in : JHEP 02 (2015) 121 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;
3.
Measurement of the CP-violating phase ϕs in ˉB0sD+sDs decays / LHCb collaboration
We present a measurement of the CP-violating weak mixing phase ϕs using the decay ˉB0sD+sDs in a data sample corresponding to 3.0 fb1 of integrated luminosity collected with the LHCb detector in pp collisions at centre-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not constrain |λ|=1 to allow for the presence of CP violation in decay, yields ϕs=0.02±0.17 (stat) ±0.02 (syst) rad, |λ|=0.91+0.180.15 (stat) ±0.02 (syst). [...]
arXiv:1409.4619; LHCB-PAPER-2014-051; CERN-PH-EP-2014-223; LHCB-PAPER-2014-051; CERN-PH-EP-2014-223.- Geneva : CERN, 2014-11-20 - 9 p. - Published in : Phys. Rev. Lett. 113 (2014) 211801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
4.
Measurement of the ηc(1S) production cross-section in proton-proton collisions via the decay ηc(1S)pˉp / LHCb collaboration
The production of the ηc(1S) state in proton-proton collisions is probed via its decay to the pˉp final state with the LHCb detector, in the rapidity range 2.0<y<4.5 and in the meson transverse-momentum range pT>6.5 GeV/c. The cross-section for prompt production of ηc(1S) mesons relative to the prompt J/ψ cross-section is measured, for the first time, to be σηc(1S)/σJ/ψ=1.74±0.29±0.28±0.18B at a centre-of-mass energy s=7 TeV using data corresponding to an integrated luminosity of 0.7 fb1, and σηc(1S)/σJ/ψ=1.60±0.29±0.25±0.17B at s=8 TeV using 2.0 fb1. [...]
arXiv:1409.3612; LHCB-PAPER-2014-029; CERN-PH-EP-2014-218; LHCB-PAPER-2014-029; CERN-PH-EP-2014-218.- Geneva : CERN, 2015-07-04 - 20 p. - Published in : Eur. Phys. J. C 75 (2015) 311 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
5.
Measurements of CP violation in the three-body phase space of charmless B± decays / LHCb Collaboration
Additional abstract: The additional document presents figures of the projections into the two-body invariant masses of the spectra of B±K±π+π,B±K±K+K,B±π±K+K and B±π±π+π decays. The figures show additional information related to the CP asymmetry in phase space, for section VII of the article Physical Review D 90, 112004 (2014)..
arXiv:1408.5373; CERN-PH-EP-2014-203; LHCB-PAPER-2014-044; LHCB-PAPER-2014-044; arXiv:1408.5373.- Geneva : CERN, 2014-12-11 - 17 p. - Published in : Phys. Rev. D 90 (2014) 112004 APS Open Access article: PDF; Additional document: PDF; Additional info: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): LHCb-PAPER-2014-044_supplementary - ZIP; LHCb-PAPER-2014-044_AddInfo_figs_v3 - ZIP; External link: Preprint
6.
Determination of γ and 2βs from charmless two-body decays of beauty mesons / LHCb collaboration
Using the latest LHCb measurements of time-dependent CP violation in the B0sK+K decay, a U-spin relation between the decay amplitudes of B0sK+K and B0π+π decay processes allows constraints to be placed on the angle γ of the unitarity triangle and on the B0s mixing phase 2βs. Results from an extended approach, which uses additional inputs on B0π0π0 and B+π+π0 decays from other experiments and exploits isospin symmetry, are also presented. [...]
arXiv:1408.4368; CERN-PH-EP-2014-207; LHCB-PAPER-2014-045; CERN-PH-EP-2014-207; LHCB-PAPER-2014-045.- Geneva : CERN, 2015-02-04 - 11 p. - Published in : Phys. Lett. B 741 (2015) 1 Article from SCOAP3: PDF; Elsevier Open Access article : PDF; Fulltext: arXiv:1408.4368 - PDF; S0370269314008867 - XML; Related data file(s): ZIP;
7.
Measurement of the forward W boson cross-section in pp collisions at s = 7 TeV / LHCb collaboration
A measurement of the inclusive Wμν production cross-section using data from pp collisions at a centre-of-mass energy of s=7TeV is presented. The analysis is based on an integrated luminosity of about 1.0fb1 recorded with the LHCb detector. [...]
arXiv:1408.4354; LHCB-PAPER-2014-033; CERN-PH-EP-2014-175; LHCB-PAPER-2014-033; CERN-PH-EP-2014-175.- Geneva : CERN, 2014-12-10 - 29 p. - Published in : JHEP 12 (2014) 079 Article from SCOAP3: 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 CKM angle γ using B±DK± with DK0Sπ+π,K0SK+K decays / LHCb Collaboration
A binned Dalitz plot analysis of B±DK± decays, with DK0Sπ+π and DK0SK+K, is performed to measure the CP-violating observables x± and y±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ. The analysis exploits a sample of proton-proton collision data corresponding to 3.0 fb1 collected by the LHCb experiment. [...]
arXiv:1408.2748; LHCB-PAPER-2014-041; CERN-PH-EP-2014-202; LHCB-PAPER-2014-041; CERN-PH-EP-2014-202.- Geneva : CERN, 2014-10-16 - 32 p. - Published in : JHEP 10 (2014) 097 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
9.
Search for CP violation using T-odd correlations in D0K+Kπ+π decays / LHCb collaboration
A search for CP violation using T-odd correlations is performed using the four-body D0K+Kπ+π decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities of 1.0fb1 and 2.0fb1 recorded at the centre-of-mass energies of 7 TeV and 8 TeV, respectively. [...]
arXiv:1408.1299; CERN-PH-EP-2014-194; LHCB-PAPER-2014-046; CERN-PH-EP-2014-194; LHCB-PAPER-2014-046.- Geneva : CERN, 2014-10-01 - 21 p. - Published in : JHEP 10 (2014) 005 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Springer Open Access article: PDF; External link: Preprint
10.
Measurement of the track reconstruction efficiency at LHCb / LHCb collaboration
The determination of track reconstruction efficiencies at LHCb using J/ψμ+μ decays is presented. Efficiencies above 95% are found for the data taking periods in 2010, 2011, and 2012. [...]
arXiv:1408.1251; CERN-LHCB-DP-2013-002; LHCB-DP-2013-002.- 2015-02-12 - 24 p. - Published in : JINST 10 (2015) P02007 Fulltext: 10.1088_1748-0221_10_02_P02007 - PDF; arXiv:1408.1251 - PDF; IOP Open Access article: PDF; External link: Preprint

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