Author/Authors :
Q2) Original Research Article
Pages 471-502
H1 Collaboration، نويسنده , , S. Aid، نويسنده , , M. Anderson، نويسنده , , A. V. Andreev، نويسنده , , B. Andrieu، نويسنده , , R.-D. Appuhn، نويسنده , , A. Babaev and NRMI Investigators، نويسنده , , Matthias J. Bahr، نويسنده , , J. B?n، نويسنده , , Y. Ban، نويسنده , , P. Baranov، نويسنده , , E. Barrelet، نويسنده , , R. Barschke، نويسنده , , W. Bartel، نويسنده , , Joan M. Barth، نويسنده , , U. Bassler، نويسنده , , H.-J. Behrend، نويسنده , , V. A. Belousov، نويسنده , , Ch. Berger، نويسنده , , G. Bernardi، نويسنده , , et al.، نويسنده ,
Abstract :
Measurements of K0 meson and Λ baryon production in deep-inelastic positron-proton scattering (DIS) are presented in the kinematic range 10 < Q2 < 70 GeV2 and 10−4 < x < 10−2. The measurements, obtained using the H1 detector at the HEPA collider, are discussed in the light of possible mechanisms for increased strangeness production at low Bjorken-x. Comparisons of the xF spectra, where xF is the fractional longitudinal momentum in the hadronic centre-of-mass frame, are made with results from electron-positron annihilation. The xF spectra and the K0 “seagull” plot are compared with previous DIS results. The mean K0 and Λ multiplicities are studied as a function of the centre-of-mass energy W and are observed to be consistent with a logarithmic increase with W when compared with previous measurements. A comparison of strangeness production in diffractive and non-diffractive DIS is made. An upper limit of 0.9 nb, at the 95% confidence level, is placed on the cross section for QCD instanton induced events.
