Articles publicats en revistes: Envíos recientes
Mostrando ítems 261-280 de 546
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Search for the decay B0s→D¯¯¯¯0f0(980)
(Journal of High Energy Physics, 2015, Vol. 2015, No.8 (Agost), 2015-08-03)A search for B0s→D¯¯¯¯0f0(980) decays is performed using 3.0 fb1− of pp collision data recorded by the LHCb experiment during 2011 and 2012. The f0(980) meson is reconstructed through its decay to the ... -
Measurement of the lifetime of the Bc+ meson using the Bc+→ J/ψπ+ decay mode
(Physics Letters B , 2015, Vol. 742, (Març), 2015-03-06)The difference in total widths between the Bc+ and B+mesons is measured using a data sample corresponding to an integrated luminosity of 3.0 fb-1collected by the LHCb experiment in 7 and 8 TeV centre-of-mass ... -
Social STEAM Learning at an Early Age with Robotic Platforms: A Case Study in Four Schools in Spain
(Sensors, 2020, Vol. 20 No 13, 2020-07)Robotics is one of the key learnings in a world where learners will interact with multiple robotic technologies and operating systems throughout their lives. However, school teachers, especially in the ... -
Observation of the B0 → ρ0ρ0 decay from an amplitude analysis of B0 → (π+π−)(π+π−) decays
(Physics Letters B , 2015, Vol. 747, (Juliol), 2015-07-30) -
Test of lepton universality with Λ0b→pK−ℓ+ℓ− decays
(Journal of High Energy Physics, 2020, 40, 2020-04)The ratio of branching fractions of the decays Λ0b → pK−e+e− and Λ0b → pK−μ+μ−, R−1pK, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 ... -
Search for the decay D0→π+π−μ+μ−
(Physics Letters B , 2014, Vol. 728, (Gener), 2014-01-20)A search for the D0→π+π−μ+μ− decay, where the muon pair does not originate from a resonance, is performed using proton–proton collision data corresponding to an integrated luminosity of 1.0 fb−1 recorded ... -
A study of CP violation in B±→DK± and B±→Dπ± decays with D→K0SK±π∓ final states
(Physics Letters B , 2014, Vol. 733 (Juny), 2014-06-02)A first study of CP violation in the decay modes B±→[K0SK±π∓]Dh± and B±→[K0SK∓π±]Dh±, where h labels a K or π meson and D labels a D0 or D⎯⎯⎯0 meson, is performed. The analysis uses the LHCb data set ... -
Observation of X(3872) production in pp collisions at s√=7~TeV
(The European Physical Journal C, 2012. Vol. 72, No. 5 (Maig), 2012-05-04)Using 34.7 pb−1 of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at s√=7~TeV is observed for the first time. Candidates are selected in the ... -
Search for the lepton flavour violating decay τ − → μ − μ + μ −
(Journal of High Energy Physics, 2015, Vol. 2015, No.2 (Febrer), 2015-02-18)A search for the lepton flavour violating decay τ − → μ − μ + μ − is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0 fb−1 of proton-proton collisions ... -
Measurement of the inelastic pp cross-section at a centre-of-mass energy of s√ = 7 TeV
(Journal of High Energy Physics, 2015, Vol. 2015, No.2 (Febrer), 2015-02-19)The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum p T > 0.2GeV/c in the pseudorapidity range 2.0 < η < 4.5, is measured ... -
Measurement of ψ(2S) production cross-sections in proton-proton collisions at s√=7 and 13 TeV
(The European Phisical Journal C, 2020, 185, 2020-02)The cross-sections of ψ(2S) meson production in proton-proton collisions at s√=13 TeV are measured with a data sample collected by the LHCb detector corresponding to an integrated luminosity of 275 pb−1. ... -
Measurement of σ(pp → bb X) at √s = 7 TeV in the forward region
(Physics Letters B , 2010, Vol. 694, No. 3 (Novembre), 2010-11-08)Decays of b hadrons into final states containing a D0 meson and a muon are used to measure the bb production cross-section in proton–proton collisions at a centre-of-mass energy of 7 TeV at the LHC. In ... -
Observation of New Ξ0c Baryons Decaying to Λ+cK−
(Physical Review Letters, 2020, Vol.124, 222001, 2020-06)The Λ+cK− mass spectrum is studied with a data sample of pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb−1 collected by the LHCb experiment. Three ... -
First Observation of Excited Ω−b States
(Physical Review Letters, 2020, Vol.124, 082002, 2020-02)We report four narrow peaks in the Ξ0bK− mass spectrum obtained using pp collisions at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1 recorded by ... -
Search for A′→μ+μ− Decays
(Physical Review Letters, 2020, Vol.124, 041801, 2020-01)Searches are performed for both promptlike and long-lived dark photons, A′, produced in proton-proton collisions at a center-of-mass energy of 13 TeV. These searches look for A′→μ+μ− decays using a data ... -
Precision Measurement of the Mass and Lifetime of the Ξ0b Baryon
(Physical Review Letters , 2014, Vol. 113, No.3 (Juliol), 2014-07-15)Using a proton-proton collision data sample corresponding to an integrated luminosity of 3 fb−1 collected by LHCb at center-of-mass energies of 7 and 8 TeV, about 3800 Ξ0b→Ξ+cπ−, Ξ+c→pK−π+ signal decays ... -
Measurement of the B0s→J/ψ¯¯¯¯K*0 branching fraction and angular amplitudes
(Physical Review D, 2012, No. 86 (Octubre), 2012-10-08)A sample of 114±11 B0s→J/ψK−π+ signal events obtained with 0.37 fb−1 of pp collisions at √s=7 TeV collected by the LHCb experiment is used to measure the branching fraction and polarization amplitudes ... -
First observation of the decay B+→π+μ+μ−
(Journal of High Energy Physics, 2012, Vol. 2012, No.12 (Desembre), 2012-12-21)A discovery of the rare decay B + → π + μ + μ − is presented. This decay is observed for the first time, with 5.2 σ significance. The observation is made using pp collision data, corresponding to an ... -
Measurement of CP observables in B± → DK± and B± → Dπ± with D → K0SK±π∓ decays
(Journal of High Energy Physics, 2020, 58, 2020-05)Measurements of CP observables in B± → DK± and B± → Dπ± decays are presented, where D represents a superposition of D0 and D¯¯¯¯0 states. The D meson is reconstructed in the three-body final states ... -
Measurement of the charge asymmetry in B±→ϕK±B±→ϕK± and search for B±→ϕπ±B±→ϕπ± decays
(Physics Letters B , 2014, Vol. 728, (Gener), 2014-01-20)The CP-violating charge asymmetry in B±→ϕK±B±→ϕK± decays is measured in a sample of pp collisions at 7 TeV centre-of-mass energy, corresponding to an integrated luminosity of 1.0 fb−1 collected by the ...