Browsing by Author "Ubeda Garcia, M."
Now showing items 1-20 of 22
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Dalitz plot analysis of B[superscript 0] → [bar over D][superscript 0]π[superscript +]π[superscript -] decays
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-08)The resonant substructures of B[superscript 0] → [bar over D][superscript 0]π[superscript +]π[superscript -] decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated ... -
Differential branching fraction and angular analysis of the decay B[superscript 0][subscript s] → ϕμ[superscript +]μ[superscript −]
Aaij, R.; Abellan Beteta, C.; Adeva, B.; Adinolfi, M.; Adrover, C.; e.a. (Springer Berlin Heidelberg, 2013-07)The determination of the differential branching fraction and the first angular analysis of the decay B[superscript 0][subscript 0] → ϕμ[superscript +]μ[subscript −] are presented using data, corresponding to an integrated ... -
First observation and amplitude analysis of the B[superscript -] → D[superscript +]K[superscript -]π[superscript -] decay
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-05)The B[superscript -] → D[superscript +]K[superscript -]π[superscript -] decay is observed in a data sample corresponding to 3.0 fb^{-1} of pp collision data recorded by the LHCb experiment during 2011 and 2012. Its branching ... -
Measurement of B[+ over c] Production in Proton-Proton Collisions at √s = 8 TeV
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-04)Production of B[+ over 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[superscript -1] recorded by the LHCb experiment. ... -
Measurement of CP Violation in B[superscript 0] → J/ψK[0 over S] Decays
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-07)Measurements are presented of the CP violation observables S and C in the decays of B[superscript 0] and [bar over B][superscript 0] mesons to the J/ψK[0 over S] final state. The data sample corresponds to an integrated ... -
Measurement of CP violation parameters in B<[superscript 0] → DK[superscript *0] decays
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2014-12)An analysis of B[superscript 0] → DK[superscript *0] decays is presented, where D represents an admixture of D[superscript 0] and [bar over D][superscript 0] mesons reconstructed in four separate final states: K[superscript ... -
Measurement of J/ψ polarization in pp collisions at √s =7 TeV
Aaij, R.; Abellan Beteta, C.; Adeva, B.; Adinolfi, M.; Adrover, C.; e.a. (Springer Berlin Heidelberg, 2013-11)An angular analysis of the decay J/ψ→μ[superscript +] μ[superscript −] is performed to measure the polarization of prompt J/ψ mesons produced in pp collisions at √s =7 TeV. The dataset corresponds to an integrated luminosity ... -
Measurement of the [bar over B][0 over s] Meson Lifetime in D[+ over s]π[superscript −] Decays
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2014-10)We present a measurement of the ratio of the [bar over B][0 over s] meson lifetime, in the flavor-specific decay to D[+ over s]π[superscript −], to that of the [bar over B][superscript 0] meson. The pp collision data used ... -
Measurement of the CP-Violating Phase ϕ[subscript s] in [bar over B][0 over s] → D[+ over s]D[- over s] Decays
Aaij, R.; Abellán Beteta, C.; Adeva, B.; Adinolfi, M.; Affolder, A.; e.a. (American Physical Society, 2014-11)We present a measurement of the CP-violating weak mixing phase ϕ[subscript s] using the decay [bar over B][0 over s] → D[+ over s]D[- over s] in a data sample corresponding to 3.0 fb[superscript -1] of integrated luminosity ... -
Measurement of the fragmentation fraction ratio f[subscript s]/f[subscript d] and its dependence on B meson kinematics
Aaij, R.; Abellan Beteta, C.; Adametz, A.; Adeva, B.; Adinolfi, M.; e.a. (Springer Berlin Heidelberg, 2013-04)The relative production rate of B[superscript 0][subscript s] and B[superscript 0] mesons is determined with the hadronic decays B[superscript 0][subscript s]→D[superscript −][subscript s]π[superscript +] and B[superscript ... -
Measurement of the Semileptonic CP Asymmetry in B[superscript 0] - [bar over B][superscript 0] Mixing
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-01)The semileptonic CP asymmetry in B [superscript 0] - [bar over B][superscript 0] mixing, a[d over sl], is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb[superscript -1], ... -
Measurements of CP violation in the three-body phase space of charmless B[superscript ±] decays
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2014-12)The charmless three-body decay modes B[superscript ±] → K[superscript ±]π[superscript +]π[superscript -], B[superscript ±] → K[superscript ±]K[superscript +]K[superscript -], B[superscript ±] → π[superscript ±]K[superscript ... -
Model-independent confirmation of the Z(4430)[superscript -] state
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-12)The decay B[superscript 0] → ψ(2S)K[superscript +]π[superscript -] is analyzed using 3 fb[superscript -1] of pp collision data collected with the LHCb detector. A model-independent description of the ψ(2S)π mass spectrum ... -
Observation of B[superscript 0][subscript s]-[bar over B][superscript 0][subscript s] mixing and measurement of mixing frequencies using semileptonic B decays
Aaij, R.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; e.a. (Springer Berlin Heidelberg, 2013-12)The B[superscript 0][subscript s] and B[superscript 0] mixing frequencies, Δm[subscript s] and Δm[subscript d], are measured using a data sample corresponding to an integrated luminosity of 1.0 fb[superscript −1] collected ... -
Observation of the B[0 over s] → n[superscript ']n[superscript '] Decay
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-07)The first observation of the B[s over 0] → η[superscript ′]η[superscript ′] decay is reported. The study is based on a sample of proton-proton collisions corresponding to 3.0 fb[superscript -1] of integrated luminosity ... -
Observation of Two New Ξ [subscript b][superscript −] Baryon Resonances
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-02)Two structures are observed close to the kinematic threshold in the Ξ[0 over b]π[superscript -] mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb[superscript ... -
Precision Measurement of CP Violation in B[0 over s] → J/ΨK[superscript +]K[superscript −] Decays
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2015-01)The time-dependent CP asymmetry in B[0 over s] → J/ψK[superscript +]K[superscript -] decays is measured using pp collision data, corresponding to an integrated luminosity of 3.0 fb[superscript -1], collected with the LHCb ... -
Precision measurement of D meson mass differences
Aaij, R.; Abellan Beteta, C.; Adeva, B.; Adinolfi, M.; Adrover, C.; e.a. (Springer-Verlag, 2013-06)Using three- and four-body decays of D mesons produced in semileptonic b-hadron decays, precision measurements of D meson mass differences are made together with a measurement of the D[superscript 0] mass. The measurements ... -
Precision Measurement of the Mass and Lifetime of the Ξ[− over b] Baryon
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (American Physical Society, 2014-12)We report on measurements of the mass and lifetime of the Ξ[- over b] baryon using about 1800 Ξ[- over b] decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb[superscript ... -
Search for long-lived heavy charged particles using a ring imaging Cherenkov technique at LHCb
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; e.a. (Springer Berlin Heidelberg, 2015-12)A search is performed for heavy long-lived charged particles using 3.0 fb⁻¹ of proton–proton collisions collected at √s= 7 and 8 TeV with the LHCb detector. The search is mainly based on the response of the ring imaging ...