0000000000906840

AUTHOR

B. Gomez

showing 5 related works from this author

Observation and Properties of the Orbitally ExcitedBs2*Meson

2008

We report the direct observation of the excited L=1 state B_{s2}* in fully reconstructed decays to B+K-. The mass of the B_{s2}* meson is measured to be {5839.6 +- 1.1 (stat.) +- 0.7 (syst.) MeV/c^2, and its production rate relative to the B+ meson is measured to be [1.15 +- 0.23 (stat.) +- 0.13 (syst.)] %.

PhysicsMeson010308 nuclear & particles physicsDirect observationFOS: Physical sciencesGeneral Physics and Astronomy01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)Particle decayExcited state0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::ExperimentMolecular orbitalAtomic physicsNuclear Experiment010306 general physicsProduction ratePhysical Review Letters
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Search for flavor-changing-neutral-current D meson decays

2008

We study the flavor-changing-neutral-current process c to u mu+ mu- using 1.3 fb^-1 of p p bar collisions at sqrt(s) = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the Ds+ and D+ to phi pi+ to mu+ mu- pi+ final states with significance greater than four standard deviations above background for the D+ state. We search for the continuum decay of D+ to pi+mu+mu- in the dimuon invariant mass spectrum away from the phi resonance. We see no evidence of signal above background and set a limit of B(D+ to pi+mu+mu-) < 3.9 x 10^-6 at the 90% C.L. This limit places the most stringent constraint on new phenomena in the c to u mu+ mu- t…

PhysicsParticle physicsMeson010308 nuclear & particles physicsFlavor-changing neutral currentHadronTevatronGeneral Physics and AstronomyFOS: Physical sciencesElementary particle01 natural sciences7. Clean energyHigh Energy Physics - ExperimentNuclear physicsParticle decayHigh Energy Physics - Experiment (hep-ex)Pair production0103 physical sciencesD meson[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment010306 general physicsPhysical Review Letters
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14th International HLA and Immunogenetics Workshop: Report on the Prospective Chronic Rejection Project

2007

An international collaborative study of 45 transplant centers was undertaken at the 14th International HLA (human leukocyte antigen) and Immunogenetics Workshop to see if HLA antibodies detected posttransplant are predictive of chronic graft failure. With the newly developed assay, MICA (major histocompatibility complex class I-related chain A) antibodies were also measured and their effect analyzed. Total of 5219 sera from patients who were more than 6 months posttransplant with functioning graft were tested for HLA antibodies by enzyme-linked immunosorbent assay, flow cytometry, or Luminex. HLA antibodies were found in 27.2% of kidney patients, 23.6% in the liver, 52.7% in the heart, and …

Graft RejectionMICA antibodyImmunologyHuman leukocyte antigenHistocompatibility TestingImmunogeneticsMajor histocompatibility complexBiochemistryimmunogenetics workshopchronic rejectionHLA AntigensTransplantation ImmunologyImmunogeneticsGeneticsmedicineHumansImmunology and AllergyHLA antibodyKidneyLungbiologybusiness.industryHistocompatibility TestingGraft SurvivalHistocompatibility Antigens Class IPanel reactive antibodymulti-center studyGeneral MedicineKidney Transplantationmedicine.anatomical_structureChronic DiseaseImmunologybiology.proteinHeart TransplantationAntibodybusinessTissue Antigens
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Model-independent measurement of the W-boson helicity in top-quark decays at D0.

2008

Made available in DSpace on 2022-04-28T20:37:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-02-14 Science and Technology Facilities Council We present the first model-independent measurement of the helicity of W bosons produced in top quark decays, based on a 1fb-1 sample of candidate tt̄ events in the dilepton and lepton plus jets channels collected by the D0 detector at the Fermilab Tevatron pp̄ Collider. We reconstruct the angle θ* between the momenta of the down-type fermion and the top quark in the W boson rest frame for each top quark decay. A fit of the resulting cos θ* distribution finds that the fraction of longitudinal W bosons f0=0.425±0.166(stat)±0.102(syst) and the f…

PhysicsTop quarkParticle physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyTevatronGeneral Physics and AstronomyFermionRest frame01 natural sciencesHelicityNuclear physicsParticle decay0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsBosonLepton
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CCDC 616250: Experimental Crystal Structure Determination

2007

Related Article: B.Macias, M.V.Villa, B.Gomez, J.Borras, G.Alzuet, M.Gonzalez-Alvarez, A.Castineiras|2007|J.Inorg.Biochem.|101|444|doi:10.1016/j.jinorgbio.2006.11.007

Space GroupCrystallographybis(8-(N-Benzylsulfonyl)aminoquinolinyl-NN')-copper(ii)Crystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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