Diffractive φ Production in a Perturbative QCD Model
نویسنده
چکیده
The elastic leptoproduction of φ measured by the H1 collaboration at HERA is described by a perturbative QCD model, based on open ss̄ production and parton hadron duality, proposed by Martin et al. We observe that both the total cross section and the ratio of the longitudinal and transverse cross sections are well reproduced with an effective strange-quark mass ms ∼ 320 − 380 MeV for various gluon distribution functions. Possible connection of the effective mass and the momentum dependent dynamical mass associated with dynamical breaking of chiral symmetry is also discussed. PACS: 13.85.Ni,14.40.Gx,12.38.Bx,12.39.Jh
منابع مشابه
The QCD description of diffractive processes
We review the application of perturbative QCD to diffractive processes. We introduce the two gluon exchange model to describe diffractive q ¯ q and q ¯ qg production in deep inelastic scattering. We study the triple Regge limit and briefly consider multiple gluon exchange. We discuss diffractive vector meson production at HERA both at t = 0 and large |t|. We demonstrate the non-factorization of...
متن کاملCharm production in diffractive deep inelastic scattering
The diffractive open charm production is computed in perturbative QCD formalism and in the Regge approach. The results are compared with recent data on charm diffractive structure function measured at DESY-HERA. Our results demonstrate that this observable can be useful to discriminate the QCD dynamics.
متن کاملar X iv : h ep - p h / 01 12 19 2 v 2 3 F eb 2 00 2 Diffractive D s production in charged current DIS
We present a perturbative QCD calculation of diffractive Ds production in charged current deep inelastic scattering. In the two-gluon exchange model, we analyze the diffractive process νN → μ−ND+ s , which may provide useful information for the gluon structure of nucleons and the diffraction mechanism in QCD. The cross section of diffractive Ds production with xBj = 0.005-0.05 and Eν = 50 Gev i...
متن کاملPerturbative QCD Odderon and Diffractive ηc Production
The Odderon state in perturbative QCD is briefly reviewed. Recent calculations devoted to estimate the diffrative ηc production at high energies from the leading known Odderon states are discussed.
متن کاملCan perturbative QCD predict a substantial part of diffractive LHC / SSC physics ?
We examine a model of hadronic diffractive scattering which interpolates between perturbative QCD and non-perturbative fits. We restrict the perturbative QCD re-summation to the large transverse momentum region, and use a simple Regge-pole parametrization in the infrared region. This picture allows us to account for existing data, and to estimate the size of the perturbative contribution to fut...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000