O ct 2 00 5 A possible 0 − + glueball candidate X ( 1835 ) Bing
نویسنده
چکیده
The possibility of X(1835) discovered by BESII as a 0−+ glueball is studied in this paper. The decay rates of X(1835) → pp̄, V V are associated with gluon spin contents of proton and vector mesons. Estimations of the decay rates of X(1835) → V V, γV, γγ and the cross sections of γγ → X(1835) → f and h1+h2 → X(1835)+... are presented.
منابع مشابه
Glueball Candidate X(1835)
The possibility of X(1835) discovered by BESII as a 0−+ glueball is studied in this paper. The decay rates of X(1835) → pp̄, V V are associated with gluon spin contents of proton and vector mesons. Estimations of the decay rates of X(1835) → V V, γV, γγ and the cross sections of γγ → X(1835) → f and h1+h2 → X(1835)+... are presented.
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With the assumption that the X(1835) and η(1760) recently observed by the BES Collaboration are the 3 1 S 0 meson states, the strong decays of these two states are investigated in the 3 P 0 decay model. We find that the predicted total widths of the X(1835) and η(1760) can be reasonably reproduced with the X(18350) − η(1760) mixing angle lying on the range q ¯ q members seems reasonable.
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We study two body decays of a scalar glueball. We show that in QCD a spin-0 pure glueball (a state only with gluons) cannot decay into a pair of light quarks if chiral symmetry holds exactly, i.e., the decay amplitude is chirally suppressed. However, this chiral suppression does not materialize itself at the hadron level such as in decays into π + π − and K + K −. We show this explicitly in two...
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Inclusive K0 s K 0 s production in deep inelastic ep scattering at HERA has been studied with the ZEUS detector using an integrated luminosity of 120 pb−1. Two states are observed at masses of 1537+9 −8 MeV and 1726±7 MeV, as well as an enhancement around 1300 MeV. The state at 1537 MeV is consistent with the well established f ′ 2(1525). The state at 1726 MeV may be the glueball candidate f0(1...
متن کاملar X iv : h ep - p h / 03 08 24 0 v 1 2 4 A ug 2 00 3 Glueballs , closed fluxtubes and η ( 1440 )
The ηL(1410) component of the η(1440) pseudoscalar has strong affinity for glue. But its mass is incompatible with lattice simulations that predict a much higher value for the 0 glueball. As a consequence it has been suggested that ηL(1410) could signal physics beyond the Standard Model. Here we argue that if glueballs are closed gluonic fluxtubes then ηL(1410) is a prime candidate for the 0 −+...
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