a0+(980)-resonance production in pp->dK+Kbar0 reactions close to threshold

Abstract

The reaction pp->d K+ Kbar0 has been investigated at an excess energy of Q=46 MeV above the (K+ Kbar0) threshold with ANKE at COSY-Juelich. From the detected coincident dK+ pairs about 1000 events with a missing Kbar0 were identified, corresponding to a total cross section of sigma(pp->d K+ Kbar0)=(38 +/- 2(stat) +/- 14(syst)) nb. Invariant-mass and angular distributions have been jointly analyzed and reveal s-wave dominance between the two kaons, accompanied by a p-wave between the deuteron and the kaon system. This is interpreted in terms of a0+(980)-resonance production.

arXiv comment4 pages, 4 figures; accepted by Phys. Rev. Lett

References in corpus (18)

• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Chiral Symmetry Amplitudes in the S-Wave Isoscalar and Isovector Channels and the σ, f_0(980), a_0(980) Scalar Mesons
• Chiral symmetry amplitudes in the s-wave isoscalar and isovector channels and the $\sigma ,f_0(980),a_0(980)$ scalar mesons
• Scalar mesons above and below 1 GeV
• On the structure of the scalar mesons $f_0(975)$ and $a_0(980)$
• Study of the Decay phi --> pi0 pi0 gamma with the KLOE Detector
• Study of the Decay phi --> eta pi0 gamma with the KLOE detector
• The $\varphi (1020)\to {\pi }^0{\pi }^0\gamma$ decay
• $\varphi$ and $\omega$ Meson Production in pp Reactions at $p_{lab}$=3.67 GeV/c
• The $\varphi \to \eta {\pi }^0\gamma$ decay
• f_1(1285) Formation in Two-Photon Collisions at LEP
• Properties of the a0(980) meson
• Radiative decays of basic scalar, vector and tensor mesons and the determination of the P-wave q\bar q multiplet
• A measurement of the branching fractions of the f1(1285) and f1(1420) produced in central pp interactions at 450 GeV/c
• a0(980)-f0(980) mixing and isospin violation in the reactions pN -> d a0, pd -> 3He/3H a0 and dd -> 4He a0
• Aspects of a0-f0 mixing in the reaction pn->da0
• Proton--induced deuteron breakup at GeV energies with forward emission of a fast proton pair
• A study of the centrally produced eta pi0 and eta pi- systems in pp interactions at 450 GeV/c

Cited by in corpus (19)

• Kaon Pair Production in Proton--Proton Collisions
• Inclusive K^+ meson production in proton-nucleus interactions
• Faddeev-Chiral Unitary Approach to the $K^{-}d$ scattering length
• Measurement of the pn -> dK^+K^- total cross section close to threshold
• Determination of the \bar K^0 d scattering length from the reaction pp \to d \bar K^0 K^+
• Scalar-isovector K K-bar production close to threshold
• Interpretation of K+K0bar pair production in pp collisions
• The K^- αscattering length and the reaction dd \to αK^+ K^-
• Decay of kaonium in a chiral approach
• Extraction of the KK-bar isovector scattering length from pp -> d K^+ K-bar^0 data near threshold
• Strangeness Production in pp and pn Reactions at COSY
• a0+(980)-resonance production in the reaction pp -> dpi+eta close to the K(bar(K)) threshold
• Measurement of $\Delta$ and $K^{\ast }$ Production in $d$+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Recent Physics At COSY--A Review
• Strangeness Production in Hadron Reactions
• Interaction of K^- mesons with light nuclei
• Strangeness Production at COSY
• Meson-production experiments at COSY-Juelich
• Physics at COSY