hard pomeron
Soft data and the hard pomeron
... the hard pomeron is present in soft data and that this object may be similar to a simple pole for √ s ≤ 100 ...a hard pomeron may also be found in elastic scattering data ...
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A Review of the hard pomeron in soft diffraction
... the hard pomeron may be present, but with a rather small coupling, about 10% that of the soft pomeron ...a hard pomeron should decouple fully from total hadronic cross ...
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Unitarisation and black-disk limit at the LHC in the presence of a hard pomeron
... PACS numbers: 13.85.Lg, 13.85.-t, 13.85.Dz, 12.40.Nn, 11.80.Fv Keywords: Saturation, unitarisation, hard pomeron Introduction: hard poles Experimental data reveal that total cross sections grow with ...
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Does F2 need a hard pomeron?
... soft pomeron [8℄. It is rather hard to imagine how su
h a er
e singularity an totally turn o in hadron-hadron s
attering, as the hadrons will sometimes u
tuate into small systems of quarks, omparable to ...
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The BFKL pomeron: Can it be detected?
... soft pomeron exchange [19] . We recall [1] that soft-pomeron exchange describes the rising component of the cross sections extremely well over a huge range of s, from √ s = 5 GeV or less, to 1800 ...a ...
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Perturbative QCD corrections to the soft pomeron
... the hard pomeron In order to describe total cross sections within the context of perturbative QCD, one can try, for s → ∞, to isolate the leading contributions and to resum ...
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The Hard Challenge of Aid Coordination
... Second, the Delegation of the EU in Mali is relatively strict when it comes to deciding on the suspension of aid for budget support whenever the outcome indicators prove disappointing. Variable tranches are then not ...
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Classic Nintendo games are (computationally) hard
... Theorem 4.1. It is NP-hard to decide whether the goal is reachable from the start of a stage in generalized Donkey Kong Country. Proof. We show that Donkey Kong Country is NP-hard by reducing from 3-SAT. ...
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Genomes containing Duplicates are Hard to compare
... 6 called Uniform-SAT, as follows: an instance hX, Ci of 3SAT is an instance of Uniform-SAT when the following two conditions are met: (i) for each clause C ∈ C, either all literals occurring in C are positive ...
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Classic Nintendo Games Are (Computationally) Hard
... Theorem 4.1. It is NP-hard to decide whether the goal is reachable from the start of a stage in generalized Donkey Kong Country. Proof. We show that Donkey Kong Country is NP-hard by reducing from 3-SAT. ...
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`Good-Walker' + QCD dipoles = hard diffraction
... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...
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The Hard Challenge of Aid Coordination
... Second, the Delegation of the EU in Mali is relatively strict when it comes to deciding the suspension of aid for budget support whenever the outcome indicators prove disappointing. Variable tranches are then not ...
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Optimal Reconstruction Might be Hard
... We call optimal reconstruction algorithm any algorithm that takes as input a pair (S, α) satisfying the weak precondition, that is, such that W (S, α) 6= ∅, and outputs a set which is a [r] ...
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Optimal priority assignment with hard constraints
... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...
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Computing an Evolutionary Ordering is Hard
... We construct an instance of Evolutionary Ordering problem by assigning a set to each variable, literal and clause. The main idea is that every evolu- tionary ordering of the sets would n[r] ...
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Tile-Packing Tomography Is NP-hard
... 3 General Proof Structure The proof is by showing, for each non-bar tile T , a polynomial-time reduction from the 3-Color Tomography Problem introduced in [5] and shown to be NP-hard in [4]. In that problem, an ...
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The Hard Challenge of Aid Coordination
... Second, the Delegation of the EU in Mali is relatively strict when it comes to deciding on the suspension of aid for budget support whenever the outcome indicators prove disappointing. Variable tranches are then not ...
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Designing RNA Secondary Structures Is Hard
... Robustness of the reduction. As established in the Watson-Crick energy model, our hardness result enjoys the following healthy properties. We only need a 4-letter alphabet for the sequences, which naturally corresponds ...
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Consistent Iterative Hard Thresholding for signal declipping
... to 60 and 240 for moderate and hard clipping, respectively. In addition to the previous SNR gain comparisons, we also wish to depict how end-users perceive audio data pro- cessed by the different algorithms. ...
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Optimal Reconstruction Might be Hard
... Theorem 8. The homological simplification problem of 2-dimensional simplicial pairs is NP-complete. Proof. To check that a candidate X is a homological simplification of the p-dimensional pair (K, L), it is enough to ...
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