Fragmentation monitoring of production blasts at MRICA
نویسندگان
چکیده
منابع مشابه
Charmonium Production via Fragmentation at DESY HERA
The cross section for the photoproduction of large-pT J/ψ mesons at HERA is calculated at next-to-leading order, adopting a perturbative approach to describe the fragmentation of charm quarks and gluons into J/ψ 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 resolved photon. We prese...
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In the framework of the leading order of perturbative QCD and the nonrelativistic quark-diquark model of baryons we have obtained fragmentation function for c-quark to split into Ω ccc baryon. It is shown that at LHC one can expect 3.5 · 10 3 events with Ω ccc at p ⊥ > 5 GeV/c and |y| < 1 per year.
متن کاملJ/ψ production via fragmentation at HERA
We compute the contributions to large-pT J/ψ production at HERA coming from fragmentation of gluons and charm quarks. We find that the charm quark fragmentation contribution dominates over the direct production of J/ψ via photon-gluon fusion at large-pT , while the gluon fragmentation is negligibly small over the whole range of pT . An experimental study of pT distributions of J/ψ at HERA will ...
متن کاملParticle Production and Fragmentation at Hera
• Charged Multiplicities in DIS and diffractive DIS (DDIS). The use of W and Ecurrent and a unified approach to DIS and DDIS. • Inclusive photoproduction of non-strange mesons. Universal rate curve as a function of (pT +m). • Strange Particle Production and polarisation, looked at as a function of pT , η,Q , x. • Charm fragmentation. Universality in DIS, photoproduction and ee annihilation. • B...
متن کاملCharmonium Production via Fragmentation at Higher Orders in α s
Quarkonium production at a given large p T is dominated by parton fragmentation: a parton which is produced with transverse momentum p T /z fragments into a quarkonium state which carries a fraction z of the parton momentum. Since parton production cross sections fall steeply with p T , high z fragmentation is favored. However, quantum number constraints may require the emission of gluons in th...
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ژورنال
عنوان ژورنال: International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts
سال: 1992
ISSN: 0148-9062
DOI: 10.1016/0148-9062(92)90810-m