LHC as π ρ and π π collider PETROV, V. A; RYUTIN, R. A; SOBOL, A. E
The European physical journal. C, Particles and fields,
2010, Letnik:
65, Številka:
3-4
Journal Article
The average charged hadron multiplicities induced by top quark decays are calculated in pQCD at LHC energies. Different modes of top production are considered. Proposed measurements can be used as an ...additional test of pQCD calculations independent on a fragmentation model.
Quark mass effects are analyzed at high Q2 in the current fragmentation region of DIS. It is found that the linear combination F2-2.75Fc2 scales at large Q2 and small x. We obtained a lower bound for ...the ratio Fc2/F2 which lies very close to the data from HERA.
Diffractive dissociation processes are analysed in the framework of covariant reggeization. We have considered the general form of hadronic tensor and its asymptotic behaviour for \(t\rightarrow 0\) ...in the case of conserved tensor currents before reggeization. Resulting expressions for differential cross-section of single dissociation (SD) process (\(pp \rightarrow p M\)), double dissociation (DD) (\(pp\rightarrow M_1 M_2\)) and for the proton-Pomeron cross-section are given in detail, and corresponding problems of the approach are discussed.
We discuss the possibility of measuring leading neutron production at the LHC. These data could be used to extract from it p super(+) p and p super(+) p super(+) cross sections. In this note we give ...some estimates for the case of elastic cross sections and discuss related problems and prospects.
We discuss the shape of the interaction region of the elastically scattered protons stipulated by the high-energy Pomeron exchange which turns out to be very similar with the shape of the static ...string representing the confining QCD flux tube. This similarity disappears when we enter the LHC energy region, which corresponds to many-Pomeron exchanges. Reversing the argument we conjecture a modified relationship between the width and the length of the confining string at very large lengths.
Central exclusive diffractive production (CEDP) of proton anti-proton pairs was calculated in the Regge-eikonal approach taking into account continuum and possible \(f_0(2100)\) resonance. We use the ...simple model with the ``scalar'' proton. Data from ISR and STAR were analysed and compared with theoretical description. Some predictions for the LHC at 13~TeV are also presented. We discuss shortly possible nuances, problems and prospects of investigations of this process at present and future hadron colliders.
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