0000000000358822

AUTHOR

Mahir S. Hussein

showing 2 related works from this author

Precision Measurement of theX(3872)Mass inJ/ψπ+π−Decays

2009

We present an analysis of the mass of the X(3872) reconstructed via its decay to J/psi pi(+)pi(-) using 2.4 fb(-1) of integrated luminosity from p (p) over bar collisions at root s = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. The possible existence of two nearby mass states is investigated. Within the limits of our experimental resolution the data are consistent with a single state, and having no evidence for two states we set upper limits on the mass difference between two hypothetical states for different assumed ratios of contributions to the observed peak. For equal contributions, the 95% confidence level upper limit on the mass difference is 3.6 MeV/c(2). Un…

PhysicsParticle physicsMeson010308 nuclear & particles physicsHadronTevatronGeneral Physics and AstronomyQuarkonium7. Clean energy01 natural sciencesLuminosityNuclear physicsParticle decayPion0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsX(3872)Physical Review Letters
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Fragmentation of exotic oxygen isotopes

2003

Abrasion-ablation models and the empirical EPAX parametrization of projectile fragmentation are described. Their cross section predictions are compared to recent data of the fragmentation of secondary beams of neutron-rich, unstable 19,20,21O isotopes at beam energies near 600 MeV/nucleon as well as data for stable 17,18O beams.

PhysicsNuclear physicsIsotopeFragmentation (mass spectrometry)Nuclear TheoryGeneral Physics and AstronomyPhysics::Accelerator PhysicsAtomic physicsNucleonNuclear ExperimentProjectile fragmentationIsotopes of oxygenBeam (structure)
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