DAU - Arxiu Digital de la URL: Recent submissions
Now showing items 1761-1780 of 3858
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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 ... -
Searches for Λ0b and Ξ0b decays to K0Spπ− and K0SpK− final states with first observation of the Λ0b→K0Spπ− decay
(Journal of High Energy Physics, 2014, Vol. 2014, No.4 (Abril), 2014-04-11)A search for previously unobserved decays of beauty baryons to the final states K0Spπ− and K0SpK− is reported. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 ... -
Measurement of theB± production cross-section in pp collisions at √s= 7TeV
(Journal of High Energy Physics, 2012, Vol. 2012, No.4 (Abril), 2012-04-19)The production of B ± mesons in proton-proton collisions at s√ = 7 TeV is studied using 35 pb−1 of data collected by the LHCb detector. The B ± mesons are reconstructed exclusively in the B ± → J/ψK ± ... -
Study of forward Z + jet production in pp collisions at s√ = 7 TeV
(Journal of High Energy Physics, 2014, Vol. 2014, No.1 (Gener), 2014-01-09)A measurement of the Z(→ μ + μ −) + jet production cross-section in pp collisions at a centre-of-mass energy s√ = 7 TeV is presented. The analysis is based on an integrated luminosity of 1.0 fb−1 recorded ... -
First observation and measurement of the branching fraction for the decay B 0 s → D ∗ s ∓ K ±
(Journal of High Energy Physics, 2015, Vol. 2015, No.6 (Juny), 2015-06-18)The first observation of the B 0 s → D ∗ s ∓ K ± decay is reported using 3.0 fb−1 of proton-proton collision data collected by the LHCb experiment. The D ∗ s ∓ mesons are reconstructed through the decay ... -
Measurement of the time-dependent CP asymmetries in B 0s → J/ψK 0S
(Journal of High Energy Physics, 2015, Vol. 2015, No.6 (Juny), 2015-06-18) -
Precise measurements of the properties of the B1(5721)0,+ and B *2 (5747)0,+ states and observation of B+,0π−,+ mass structures
(Journal of High Energy Physics, 2015, Vol. 2015, No.4 (Abril), 2015-04-07)Invariant mass distributions of B+π− and B0π+ combinations are investigated in order to study excited B mesons. The analysis is based on a data sample corresponding to 3.0 fb−1 of pp collision data, ... -
Measurement of the forward-backward asymmetry in Z/γ∗ → μ + μ − decays and determination of the effective weak mixing angle
(Journal of High Energy Physics, 2015, Vol. 2015, No.11 (Noviembre), 2015-11-27)The forward-backward charge asymmetry for the process qq¯¯→Z/γ∗→μ+μ− is measured as a function of the invariant mass of the dimuon system. Measurements are performed using proton proton collision data ... -
Angular analysis of charged and neutral B → Kμ + μ − decays
(Journal of High Energy Physics, 2014, Vol. 2014, No.5 (Maig), 2014-05-19)The angular distributions of the rare decays B + → K + μ + μ − and B0→K0Sμ+μ− are studied with data corresponding to 3fb−1 of integrated luminosity, collected in proton-proton collisions at 7 and 8 TeV ... -
Diagnóstico de síndrome de Down a partir de imágenes
(2018)Recientemente se ha demostrado que un extracto del té verde mejora la capacidad cognitiva de las personas con Síndrome de Down. Además, se están llevando a cabo numerososestudios para demostrar si ... -
Measurement of ϒ production in pp collisions at s−−√=7 TeV
(The European Physical Journal C, 2012. Vol. 72, No. 6 (Juny), 2012-06-07)The production of ϒ(1S), ϒ(2S) and ϒ(3S) mesons in proton-proton collisions at the centre-of-mass energy of s√=7 TeV is studied with the LHCb detector. The analysis is based on a data sample of 25 pb−1 ... -
Search for CP violation in D0 → π− π+ π0 decays with the energy test
(Physics Letters B , 2015, Vol. 740, (Gener), 2015-01-05)A search for time-integrated CP violation in the Cabibbo-suppressed decay D-0 -> pi(-)pi(+)pi(0) ir is performed using for the first time an unbinned model-independent technique known as the energy test. ... -
Search for CP violation in the decay D+→π−π+π+
(Physics Letters B , 2014, Vol. 728, (Gener), 2014-01-20)A search for CP violation in the phase space of the decay $D^+\to\pi^-\pi^+\pi^+$ is reported using $pp$ collision data, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, collected by the LHCb ... -
Measurement of the flavour-specific CP-violating asymmetry assl in B0s decays
(Physics Letters B , 2014, Vol. 728, (Gener), 2014-01-20)The CP-violating asymmetry a_{sl}^s is studied using semileptonic decays of Bs and anti-Bs mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample ... -
Search for CP violation using T-odd correlations in D 0 → K + K −π+π− decays
(Journal of High Energy Physics, 2014, Vol. 2014, No.10 (Octubre), 2014-10-01)A search for CP violation using T-odd correlations is performed using the four-body D 0 → K + K −π+π− decay, selected from semileptonic B decays. The data sample corresponds to integrated luminosities ... -
Study of Υ production and cold nuclear matter effects in pPb collisions at √sNN = 5 TeV
(Journal of High Energy Physics, 2014, Vol. 2014, No.7 (Juliol), 2014-07-21)Production of Υ mesons in proton-lead collisions at a nucleon-nucleon centre-of-mass energy sNN−−−−√ = 5 TeV is studied with the LHCb detector. The analysis is based on a data sample corresponding to ... -
Study of D J meson decays to D +π−, D 0π+ and D ∗+π− final states in pp collisions
(Journal of High Energy Physics, 2013, Vol. 2013, No.9 (Setembre), 2013-09-26)A study of D +π−, D 0π+ and D ∗+π− final states is performed using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected at a centre-of-mass energy of 7 TeV with the LHCb ... -
Evidence for the decay B+c→J/ψ3π+2π−
(Journal of High Energy Physics, 2014, Vol. 2014, No.2 (Febrer), 2014-05-30)Evidence is presented for the decay B+c→J/ψ3π+2π− using proton-proton collision data, corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb detector. A signal yield of 32 ± 8 ... -
Study of the kinematic dependences of Λ 0b production in pp collisions and a measurement of the Λ 0b → Λ +c π − branching fraction
(Journal of High Energy Physics, 2014, Vol. 2014, No.8 (Agost), 2014-08-26)The kinematic dependences of the relative production rates, fΛ0b/fd, of Λ 0b baryons and B 0 mesons are measured using Λ 0b → Λ +c π − and B¯¯¯¯0 →D+π− decays. The measurements use proton-proton ... -
Measurement of the relative rate of prompt χ c0, χ c1 and χ c2 production at s√=7 TeV
(Journal of High Energy Physics, 2013, Vol. 2013, No.10 (Octubre), 2013-10-18)Prompt production of charmonium χ c0, χ c1 and χ c2 mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of s√=7 TeV. The χ c mesons are identified through their decay ...