CERN Accelerating science

CERN Document Server 2,050 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 4.91 δευτερόλεπτα. 
1.
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
2.
Precision measurement of the mass and lifetime of the Ξ0b baryon / LHCb collaboration
Using a proton-proton collision data sample corresponding to an integrated luminosity of 3 fb1 collected by LHCb at center-of-mass energies of 7 and 8 TeV, about 3800 Ξ0bΞ+cπ, Ξ+cpKπ+ signal decays are reconstructed. From this sample, the first measurement of the Ξ0b baryon lifetime is made, relative to that of the Λ0b baryon. [...]
arXiv:1405.7223; CERN-PH-EP-2014-107; LHCB-PAPER-2014-021; LHCB-PAPER-2014-021; CERN-PH-EP-2014-107.- Geneva : CERN, 2014-07-15 - 10 p. - Published in : Phys. Rev. Lett. 113 (2014) 032001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP.ZIP; External link: Preprint
3.
Studies of beauty baryon decays to D0ph and Λ+ch final states / LHCb collaboration
Decays of beauty baryons to the D0ph and Λ+ch final states (where h indicates a pion or a kaon) are studied using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb1, collected by the LHCb detector. The Cabibbo-suppressed decays Λ0bD0pK and Λ0bΛ+cK are observed and their branching fractions are measured with respect to the decays Λ0bD0pπ and Λ0bΛ+cπ. [...]
arXiv:1311.4823; CERN-PH-EP-2013-207; LHCB-PAPER-2013-056; CERN-PH-EP-2013-207; LHCB-PAPER-2013-056.- Geneva : CERN, 2014-02-13 - 15 p. - Published in : Phys. Rev. D 89 (2014) 032001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
4.
Measurement of resonant and CP components in ¯B0sJ/ψπ+π decays / LHCb Collaboration
The resonant structure of the decay ¯B0sJ/ψπ+π is studied using data corresponding to 3 fb1 of integrated luminosity from pp collisions by the LHC and collected by the LHCb detector. Five interfering π+π states are required to describe the decay: f0(980), f0(1500), f0(1790), f2(1270), and f2(1525). [...]
arXiv:1402.6248; LHCB-PAPER-2013-069; CERN-PH-EP-2014-024; LHCB-PAPER-2013-069; CERN-PH-EP-2014-024.- Geneva : CERN, 2014-05-14 - 21 p. - Published in : Phys. Rev. D 89 (2014) 092006 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
5.
Observation of ˉB0(s)J/ψf1(1285) decays and measurement of the f1(1285) mixing angle / LHCb collaboration
Decays of ˉB0(s) and ˉB0 mesons into J/ψπ+ππ+π final states, produced in pp collisions at the LHC, are investigated using data corresponding to an integrated luminosity of 3 fb1 collected with the LHCb detector. ˉB0(s)J/ψf1(1285) decays are seen for the first time, and the branching fractions are measured. [...]
arXiv:1310.2145; CERN-PH-EP-2013-186; LHCB-PAPER-2013-055; CERN-PH-EP-2013-186; LHCB-PAPER-2013-055.- Geneva : CERN, 2014-03-04 - 9 p. - Published in : Phys. Rev. Lett. 112 (2014) 091802 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
6.
Study of beauty hadron decays into pairs of charm hadrons / LHCb collaboration
First observations of the decays Λ0bΛ+cD(s) are reported using data corresponding to an integrated luminosity of 3fb1 collected at 7 and 8 TeV center-of-mass energy in proton-proton collisions with the LHCb detector. In addition, the most precise measurement of the branching fraction B(B0sD+Ds) is made and a search is performed for the decays B0(s)Λ+cΛc. [...]
arXiv:1403.3606; CERN-PH-EP-2014-033; LHCB-PAPER-2014-002; CERN-PH-EP-2014-033; LHCB-PAPER-2014-002.- Geneva : CERN, 2014-05-21 - 9 p. - Published in : Phys. Rev. Lett. 112 (2014) 202001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Preprint
7.
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
8.
Evidence of CP violation in B+pˉpK+ decays / LHCb Collaboration
Three-body B+p¯pK+ and B+p¯pπ+ decays are studied using a data sample corresponding to an integrated luminosity of 3.0 fb1 collected by the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV. Evidence of CP violation in the B+p¯pK+ decay is found in regions of the phase space, representing the first measurement of this kind for a final state containing baryons. [...]
arXiv:1407.5907; LHCB-PAPER-2014-034; CERN-PH-EP-2014-173; LHCB-PAPER-2014-034; CERN-PH-EP-2014-173.- Geneva : CERN, 2014-09-29 - 9 p. - Published in : Phys. Rev. Lett. 113 (2014) 141801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
9.
Precision measurement of CP violation in B0sJ/ψK+K decays / LHCb Collaboration
The time-dependent CP asymmetry in B0sJ/ψK+K decays is measured using pp collision data, corresponding to an integrated luminosity of 3.0fb1, collected with the LHCb detector at centre-of-mass energies of 7 and 8TeV. In a sample of 96 000 B0sJ/ψK+K decays, the CP-violating phase ϕs is measured, as well as the decay widths ΓL and ΓH of the light and heavy mass eigenstates of the B0sˉB0s system. [...]
arXiv:1411.3104; LHCB-PAPER-2014-059; CERN-PH-EP-2014-271; LHCB-PAPER-2014-059; CERN-PH-EP-2014-271.- Geneva : CERN, 2015-01-30 - 9 p. - Published in : Phys. Rev. Lett. 114 (2015) 041801 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External link: Preprint
10.
Observation of two new Ξb baryon resonances / LHCb collaboration
Two structures are observed close to the kinematic threshold in the Ξ0bπ mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb1 recorded by the LHCb experiment. In the quark model, two baryonic resonances with quark content bds are expected in this mass region: the spin-parity JP=12+ and JP=32+ states, denoted Ξb and Ξb. [...]
arXiv:1411.4849; CERN-PH-EP-2014-279; LHCB-PAPER-2014-061; CERN-PH-EP-2014-279; LHCB-PAPER-2014-061.- Geneva : CERN, 2015-02-10 - 9 p. - Published in : Phys. Rev. Lett. 114 (2015) 062004 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP; External links: Interactions.org article; LHCb website article; Press Release; Symmetry Magazine article

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