Search results for "13.25.Gv"

showing 1 items of 1 documents

Determination of the $X(3872)$ meson quantum numbers

2013

The quantum numbers of the X(3872) meson are determined to be J(PC) = 1(++) based on angular correlations in B+ -> X(3872)K+ decays, where X(3872) -> pi(+) pi(-) j/psi and J/psi -> pi(+) mu(-). The data correspond to 1.0 fb(-1) of pp collisions collected by the LHCb detector. The only alternative assignment allowed by previous measurements J(PC) = 2(-+) is rejected with a confidence level equivalent to more than 8 Gaussian standard deviations using a likelihood-ratio test in the full angular phase space. This result favors exotic explanations of the X(3872) state.

Particle physicsCOLLISIONSMesonExotic mesonHigh Energy Physics::LatticeGaussian14.40.NdNuclear TheoryGeneral Physics and AstronomyFOS: Physical sciences01 natural sciencesSettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentNuclear physicsPhysics and Astronomy (all)symbols.namesakeHigh Energy Physics - Experiment (hep-ex)14.40.RtHadronic decays of bottom meson0103 physical sciences13.25.GvPi[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]CollisionsNuclear Experiment010306 general physicsPhysics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyParticle physicsState (functional analysis)Exotic hadrons Charmonium Hadron ColliderQuantum numberLHCbFIS/01 - FISICA SPERIMENTALEPhase space13.25.HwsymbolsBottom mesons (|B|>0)TetraquarkFísica nuclearHigh Energy Physics::ExperimentLHCFísica de partículesExperimentsFIS/04 - FISICA NUCLEARE E SUBNUCLEAREParticle Physics - ExperimentHadronic decays of J/ψ Υ and other quarkoniaX(3872)
researchProduct