Browsing Articles publicats en revistes by Title
Now showing items 373-392 of 538
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Observation of the Decay B+c → B0s π+
(Physical Review Letters , 2013, Vol. 111, No.18 (Novembre), 2013-11-01)The result of a search for the decay B+c→B0sπ+ is presented, using the B0s→D−sπ+ and B0s→J/ψϕ channels. The analysis is based on a data sample of pp collisions collected with the LHCb detector, corresponding ... -
Observation of the decay B+c → J/ψ K + K − π +
(Journal of High Energy Physics, 2013, Vol. 2013, No.11 (Noviembre), 2013-11-12)The decay B+c → J/ψK + K − π + is observed for the first time, using protonproton collisions collected with the LHCb detector corresponding to an integrated luminosity of 3 fb−1. A signal yield of 78 ± ... -
Observation of the decay B+c → ψ(2S)π+
(Physical Review D, 2013, Vol. 87 , No.7 (Abril), 2013-04-26)The decay B+c→ψ(2S)π+ with ψ(2S)→μ+μ− is observed with a significance of 5.2σ using pp collision data corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment. The branching ... -
Observation of the decay B0s → ψ(2S) K+ π−
(Physics Letters B , 2015, Vol. 747, (Juliol), 2015-07-30)The decay B-0s → ψ(2S)K+π- is observed using a data set corresponding to an integrated luminosity of 3.0fb-1 collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. ... -
Observation of the decay B0s→D0φ
(Physics Letters B, 2013, Vol. 727, No. 4-5 (Desembre 2013), 2013-12)First observation of the decayB0s→D0φis reported usingppcollision data, corresponding to an inte-grated luminosity of 1.0 fb−1, collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. ... -
Observation of the decay Λ0b → χc1pπ−
(Journal of High Energy Physics, 2021, Vol.5, No. 95, 2021-05)The Cabibbo-suppressed decay Λ0b → χc1pπ− is observed for the first time using data from proton-proton collisions corresponding to an integrated luminosity of 6 fb−1, collected with the LHCb detector ... -
Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data
(Nature, 2015, Vol. 522, 2015-05)The standard model of particle physics describes the fundamental particles and their interactions via the strong, electromagnetic and weak forces. It provides precise predictions for measurable quantities ... -
Observation of the Resonant Character of the Z(4430)− State
(Physical Review Letters, 2014, Vol. 112, No. 22 (Juny), 2014-06-04)Resonant structures in B0→ψ′π−K+ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3 fb−1 collected with the LHCb detector. The ... -
Observation of the semileptonic decay B+→pp¯¯¯μ+νμ
(Journal of High Energy Physics, 2020, 146, 2020-03)The Cabibbo-suppressed semileptonic decay B+→pp¯¯¯μ+νμ is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb−1 at centre-of-mass ... -
Observation of the suppressed ADS modes B± → [π± K∓ π+ π−] DK± and B± → [π± K∓ π+ π−] Dπ
(Physics Letters B, 2013, Vol. 723, No. 1-3 (Juny), 2013-06-10)An analysis of B±→DK±B±→DK± and B±→Dπ±B±→Dπ± decays is presented where the D meson is reconstructed in the four-body final state K±π∓π+π−K±π∓π+π−. Using LHCb data corresponding to an integrated luminosity ... -
Observation of the Λ 0 b → J/ψ pπ − decay
(Journal of High Energy Physics, 2014, Vol. 2014, No.7 (Juliol), 2014-07-22)The first observation of the Cabibbo-suppressed decay Λ 0 b → J/ψpπ − is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. A ... -
Observation of Two New Ξ−b Baryon Resonances
(Physical Review Letters , 2015, Vol. 114, No. 6 (Febrer), 2015-02-10)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 fb−1, recorded by ... -
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 ... -
Observation of Z production in proton-lead collisions at LHCb
(Journal of High Energy Physics, 2014, Vol. 2014, No.8 (Agost), 2014-08-19)The first observation of Z boson production in proton-lead collisions at a centre-of-mass energy per proton-nucleon pair of sNN−−−−√ = 5 TeV is presented. The data sample corresponds to an integrated ... -
Observation of ¯B0(s)→J/ψ f1(1285) Decays and Measurement of the f1(1285) Mixing Angle
(Physical Review Letters, 2014, Vol. 112, No. 9 (Març), 2014-03-04)Decays of ¯B0s and ¯B0 mesons into J/ψ π+π−π+π− final states, produced in pp collisions at the LHC, are investigated using data corresponding to an integrated luminosity of 3 fb−1 collected with the ... -
Observations of B0 s → ψ(2S)η and B0 (s) → ψ(2S)π+π− decays
(Nuclear Physics B, 2013, Vol. 871, No. 3, 2013-06)First observations of the B0s→ψ(2S)η,B0→ψ(2S)π+π− and B0s→ψ(2S)π+π− decays are made using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in proton–proton ... -
On the behavior of several fitness functions for genetically optimized microstrip antennas
(International Journal of Scientific World, 2015. Vol. 3, 1, 2015)Genetic algorithm (GA) is a popular optimization technique used in the design of performance improved microstrip patch antennas (MPAs). The fitness function plays a vital role in the successful application ... -
On the Impact of Anomalous Noise Events on Road Traffic Noise Mapping in Urban and Suburban Environments
(International Journal Of Environmental Research And Public Health. 2017.15.1, 2017-12)Noise pollution is a critical factor affecting public health, the relationship between road traffic noise (RTN) and several diseases in urban areas being especially disturbing. The Environmental Noise ... -
Ontology-Defined Middleware for Internet of Things Architectures
(Sensors. 2019, Vol.19, 5, 2019-03)The Internet of Things scenario is composed of an amalgamation of physical devices. Those physical devices are heterogeneous in their nature both in terms of communication protocols and in data exchange ... -
Opposite-side flavour tagging of B mesons at the LHCb experiment
(The European Physical Journal C, 2012. Vol. 72, No. 6 (Juny), 2012-06-07)The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been ...