Production properties of K*(892) vector mesons and their spin alignment as measured in the NOMAD experiment

Abstract

First measurements of K*(892) mesons production properties and their spin alignment in nu_mu charged current (CC) and neutral current (NC) interactions are presented. The analysis of the full data sample of the NOMAD experiment is performed in different kinematic regions. For K*+ and K*- mesons produced in nu_mu CC interactions and decaying into K0 pi+/- we have found the following yields per event: (2.6 +/- 0.2 (stat.) +/- 0.2 (syst.))% and (1.6 +/- 0.1 (stat.) +/- 0.1 (syst.))% respectively, while for the K*+ and K*- mesons produced in nu NC interactions the corresponding yields per event are: (2.5 +/- 0.3 (stat.) +/- 0.3 (syst.))% and (1.0 +/- 0.3 (stat.) +/- 0.2 (syst.))%. The results obtained for the rho00 parameter, 0.40 +/- 0.06 (stat) +/- 0.03 (syst) and 0.28 +/- 0.07 (stat) +/- 0.03 (syst) for K*+ and K*- produced in nu_mu CC interactions, are compared to theoretical predictions tuned on LEP measurements in e+e- annihilation at the Z0 pole. For K*+ mesons produced in nu NC interactions the measured rho00 parameter is 0.66 +/- 0.10 (stat) +/- 0.05 (syst).

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References in corpus (7)

• Search for nu(mu)-->nu(e) Oscillations in the NOMAD Experiment
• Parton distributions from deep-inelastic-scattering data
• Measurement of the Antilambda Polarization in nu_mu Charged Current Interactions in the NOMAD Experiment
• Spin alignment of vector meson in e+e- annihilation at Z0 pole
• Photoproduction with a Leading Proton at HERA
• A Study of Strange Particles Produced in Neutrino Neutral Current Interactions in the NOMAD Experiment
• Spin alignments of vector mesons in deeply inelastic lepton-nucleon scattering

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• Vector meson's spin alignments in high energy reactions
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• The Spin Alignment of Vector Mesons in High Energy pp Collisions
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• Inclusive and semi-inclusive production of spin-3/2 hadrons in $e^{+}{e}^{-}$ annihilation
• Parametrizations of the Spin Density Matrix
• The yields of light meson resonances in neutrinonuclear interactions at <E_nu> = 10 GeV