Enginyeria Electrònica i Biomèdica: Envíos recientes
Mostrando ítems 681-700 de 787
Strong Constraints on the Rare Decays B0s→μ+μ− and B0→μ+μ−
A search for B 0 s → μ + μ − and B 0 → μ + μ − decays is performed using 1.0 fb − 1 of p p collision data collected at √ s = 7 TeV with the LHCb experiment at the Large Hadron Collider. For both decays, the number ...
Observation of the Doubly Charmed Baryon Ξ++cc
A highly significant structure is observed in the Λc+K-π+π+ mass spectrum, where the Λc+ baryon is reconstructed in the decay mode p K-π+. The structure is consistent with originating from a weakly decaying particle, ...
First Experimental Study of Photon Polarization in Radiative B0s Decays
The polarization of photons produced in radiative B-s(0) decays is studied for the first time. The data are recorded by the LHCb experiment in pp collisions corresponding to an integrated luminosity of 3 fb(-1) at ...
Observation of J/ψp Resonances Consistent with Pentaquark States in Λ0b→J/ψK−p Decays
Observations of exotic structures in the J / ψ p channel, which we refer to as charmonium-pentaquark states, in Λ 0 b → J / ψ K − p decays are presented. The data sample corresponds to an integrated luminosity of 3 fb ...
Study of J/ψ Production in Jets
The production of J /ψ mesons in jets is studied in the forward region of proton-proton collisions using data collected with the LHCb detector at a center-of-mass energy of 13 TeV. The fraction of the jet transverse momentum ...
Measurement of the Semileptonic CP Asymmetry in B0-¯B0 Mixing
The semileptonic C P asymmetry in B 0 - ¯ B 0 mixing, a d sl , is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb − 1 , recorded by the LHCb experiment. Semileptonic B 0 ...
Measurement of ψ(2S) meson production in pp collisions at √s=7 TeV
The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at s√=7 TeVs=7 TeV has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity of 36 pb−1. ...
First Observation of the Decay B∗s2(5840)0→B*+K− and Studies of Excited B0s Mesons
The properties of the orbitally excited ( L = 1 ) B 0 s states are studied by using 1.0 fb − 1 of p p collisions at √ s = 7 TeV collected with the LHCb detector. The first observation of the B ∗ s 2 ( 5840 ) 0 meson ...
Measurement of the B0s→J/ψ¯¯¯¯K*0 branching fraction and angular amplitudes
A sample of 114 ± 11 B 0 s → J / ψ K − π + signal events obtained with 0.37 fb − 1 of p p collisions at √ s = 7 TeV collected by the LHCb experiment is used to measure the branching fraction and polarization ...
Observation of the Decays Λ0b→χc1pK− and Λ0b→χc2pK−
The first observation of the decays Λb0→χc 1p K- and Λb0→χc 2p K- is reported using a data sample corresponding to an integrated luminosity of 3.0 fb-1, collected by the LHCb experiment in p p collisions at center-of-mass ...
Measurement of the Ratio of the B0→D*−τ+ντ and B0→D*−μ+νμ Branching Fractions Using Three-Prong τ-Lepton Decays
The ratio of branching fractions R ( D * − ) ≡ B ( B 0 → D * − τ + ν τ ) / B ( B 0 → D * − μ + ν μ ) is measured using a data sample of proton-proton collisions collected with the LHCb detector at center-of-mass energies ...
Measurement of B+c Production in Proton-Proton Collisions at √s=8 TeV
Production of B + c mesons in proton-proton collisions at a center-of-mass energy of 8 TeV is studied with data corresponding to an integrated luminosity of 2.0 fb − 1 recorded by the LHCb experiment. The ratio of ...
Observation of the Annihilation Decay Mode B0→K+K−
A search for the B0→K+K- decay is performed using p p -collision data collected by LHCb. The data set corresponds to integrated luminosities of 1.0 and 2.0 fb-1 at center-of-mass energies of 7 and 8 TeV, respectively. This ...
Amplitude Analysis of the Decay B 0 → KS0 π+π- and First Observation of the CP Asymmetry in B 0 →k∗ (892)-π+
The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay ¯ B 0 → K 0 S π + π − is studied using a p p collision data sample recorded with the LHCb detector, corresponding to an integrated luminosity ...
Measurement of Antiproton Production in p-He Collisions at sNN =110 GeV
The cross section for prompt antiproton production in collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest is measured with the LHCb experiment from a data set corresponding to an integrated ...
Measurement of the b-Quark Production Cross Section in 7 and 13 TeV pp Collisions
Measurements of the cross section for producing b quarks in the reaction pp -> b (b) over barX are reported in 7 and 13 TeV collisions at the LHC as a function of the pseudorapidity. in the range 2 < eta < 5 covered by the ...
Structural and optical properties of Al-Tb/SiO2 multilayers fabricated by electron beam evaporation
Light emitting Al-Tb/SiO2 nanomultilayers (NMLs) for optoelectronic applications have been produced and characterized. The active layers were deposited by electron beam evaporation onto crystalline silicon substrates, by ...
A Verilog-A model for a light-activated semiconductor gas sensor
Light activation is a demonstrated alternative to heating for promoting gas response in semiconductor gas sensors. After two decades of research, the underlying mechanisms behind their responses are still discussed, but ...
Bipolar pulsed excitation of erbium-doped nanosilicon light emitting diodes
High quantum efficiency erbium doped silicon nanocluster (Si-NC:Er) light emitting diodes (LEDs) were grown by low-pressure chemical vapor deposition (LPCVD) in a complementary metal-oxide-semiconductor (CMOS) line. Erbium ...
The RISC-V FPGA (RVfpga) Teaching Package
RISC-V is a free and open-standard ISA based on RISC principles, allowing anyone to design, manufacture, and sell RISC-V chips and software. Its flexibility and growing ecosystem have made it popular in research, education, ...
