منابع مشابه
Measurement of Charm and Beauty Photoproduction at HERA using D ∗ μ Correlations
A measurement of charm and beauty photoproduction at the electron proton collider HERA is presented based on the simultaneous detection of a D meson and a muon. The correlation between the D meson and the muon serves to separate the charm and beauty contributions and the analysis provides comparable sensitivity to both. The total and differential experimental cross sections are compared to LO a...
متن کاملMeasurement of D∗± diffractive cross sections in photoproduction at HERA
The first measurement of D∗± meson diffractive photoproduction cross sections has been performed with the ZEUS detector at the HERA ep collider, using an integrated luminosity of 38 pb−1. The measurement has been performed for photon– proton center-of-mass energies in the range 130 < W < 280 GeV and photon virtualities Q2 < 1 GeV2. D∗± mesons have been reconstructed with p ∗ T > 2 GeV and −1.5 ...
متن کاملLarge - p T Photoproduction of D ∗ ± Mesons in ep Collisions
The cross section for the inclusive photoproduction of large-p T D * ± mesons is calculated at next-to-leading order, adopting different approaches to describe the fragmentation of charm quarks into D * ± mesons. We treat the charm quark according to the massless factorization scheme, where it is assumed to be one of the active flavours inside the proton and the photon. We present inclusive sin...
متن کاملLarge - p T Photoproduction of D ∗ ± Mesons in ep
The cross section for the inclusive photoproduction of large-p T D * ± mesons is calculated at next-to-leading order, adopting different approaches to describe the fragmentation of charm quarks into D * ± mesons. We treat the charm quark according to the massless factorization scheme, where it is assumed to be one of the active flavours inside the proton and the photon. We present inclusive sin...
متن کاملMapping the proton unintegrated gluon distribution in dijets correlations in real and virtual photoproduction at HERA
We discuss how the dijet azimuthal correlations in DIS and real photoproduction at HERA probe the differential (unintegrated) gluon distribution in the proton. We find a strong dependence of the azimuthal correlation pattern on Bjorken-x, photon virtuality and the cut on the jet transverse momenta. A rise of the azimuthal decorrelations is observed with decreasing Bjorken-x due to the interplay...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1992
ISSN: 0370-2693
DOI: 10.1016/0370-2693(92)90212-m