Invariance of domain in o-minimal structures

Pierzchała, Rafał

doi:10.4064/ap77-3-7

Cited by 5 publications

(8 citation statements)

References 2 publications

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“…Rather important spin effects (spin correlations) in the top decays are therefore not yet included. The similar solution, like for tau decay in the Z-boson production process discussed in [28], is planned to be implemented here in the near future.…”

Section: The Gg Qq → Ttbb Processesmentioning

confidence: 99%

The Monte Carlo Event Generator AcerMC version 1.0 with interfaces to PYTHIA 6.2 and HERWIG 6.3

Kerševan

Richter-Wąs

2003

Computer Physics Communications

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The AcerMC Monte Carlo Event Generator is dedicated for the generation of Standard Model background processes at pp LHC collisions. The program itself provides a library of the massive matrix elements and phase space modules for generation of a set of selected processes: gg, qq → ttbb, qqW (→ ℓν)bb, qqW (→ ℓν)tt, gg, qq → Z/γ * (→ ℓℓ)bb, gg, qq → Z/γ * (→ ℓℓ, νν, bb)tt and complete electroweak gg → (Z/W/γ * →)bbtt process. The hard process event, generated with one of these modules, can be completed by the initial and final state radiation, hadronisation and decays, simulated with either PYTHIA or HERWIG Monte Carlo event generator. Interfaces to both of these generators are provided in the distribution version. The matrix element codes have been derived with the help of the MADGRAPH package. The phase-space generation is based on the multi-channel self-optimising approach as proposed in NEXTCALIBUR event generator. Eventually, additional smoothing of the phase space was obtained by using a modified ac-VEGAS routine in order to improve the generation efficiency.

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Section: The Gg Qq → Ttbb Processesmentioning

confidence: 99%

The Monte Carlo Event Generator AcerMC version 1.0 with interfaces to PYTHIA 6.2 and HERWIG 6.3

Kerševan

Richter-Wąs

2003

Computer Physics Communications

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“…The original arrays that stored mother and daughter pointers to encode the decay process started to serve multiple purposes, depending on the context: either (as originally) to indicate the decay processes, or to encode some other relationship. Needless to say that for the programs such as PHOTOS [7][8][9][10], which relies on consistent information about the decay cascade structure to extract sub-trees, or TAUOLA [5,6], which needs to extract the information about the hard process, it has become extremely difficult to maintain a consistent generic and reliable interface to other event generators.…”

Section: The Use Of Lists In Mc-testermentioning

confidence: 99%

“…=22 PDG Id's of the particles to be removed. Repetition of this parameter is allowed for params [5], params [6] etc.…”

Section: Params[4]mentioning

confidence: 99%

“…A good example of such a building block is generator TAUOLA [2][3][4] for the simulation of τ lepton decay. In practical applications such a program needs to be combined with other generators for the τ lepton production, TAUOLA universal interface [5,6] can be then used. Additional complications arise due to other effects such as final state bremsstrahlung, PHOTOS Monte Carlo [7][8][9][10] can be then used.…”

Section: Introductionmentioning

confidence: 99%

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MC-TESTER v. 1.23: A universal tool for comparisons of Monte Carlo predictions for particle decays in high energy physics

Davidson

Golonka

Przedziński³

et al. 2011

Computer Physics Communications

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Theoretical predictions in high energy physics are routinely provided in the form of Monte Carlo generators. Comparisons of predictions from different programs and/or different initialization set-ups are often necessary. MC-TESTER can be used for such tests of decays of intermediate states (particles or resonances) in a semi-automated way.Since 2002 new functionalities were introduced into the package. In particular, it now works with the HepMC event record, the standard for C++ programs. The complete setup for benchmarking the interfaces, such as interface between τ-lepton production and decay, including QED bremsstrahlung effects is shown. The example is chosen to illustrate the new options introduced into the program. From the technical perspective, our paper documents software updates and supplements previous documentation.As in the past, our test consists of two steps. Distinct Monte Carlo programs are run separately; events with decays of a chosen particle are searched, and information is stored by MC-TESTER. Then, at the analysis step, information from a pair of runs may be compared and represented in the form of tables and plots.Updates introduced in the progam up to version 1.24.3 are also documented. In particular, new configuration scripts or script to combine results from multitude of runs into single information file to be used in analysis step are explained. PROGRAM UPDATE SUMMARYTitle of the program: MC-TESTER, version 1.23 and version 1.24.3 Tested on various platforms and operating systems: Linux SLC 4.6 and SLC 5, Fedora 8, Ubuntu 8.2 etc. Programming languages used: C++, FORTRAN77 Tested and compiled with: gcc 3.4.6, 4.2.4 and 4.3.2 with g77/gfortran Size of the package: 23.4 MB directory including example programs (6.5 MB compressed distribution archive), without ROOT libraries. Additional disk space required: Depends on the analyzed particle: 14.4 MB in the case of τ lepton decays (30 decay channels, 594 histograms, 73-pages booklet).

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“…the background is severely rejected while most of the signal survives. Now, recall that distributions of π ± tracks coming from τ 's are sensitive to the polarisation state of the τ -lepton and that in turn the spin/helicity states of τ 's coming from H ± scalars and W ± gauge bosons are different [23,24,25]. In fact, the exploitation of this fact has already been proved to be very effective in the detection of H + → τ + ν τ signals in hadron-hadron collisions [26,27,28] 5 .…”

mentioning

confidence: 99%

Detection of heavy charged Higgs bosons at future Linear Colliders

Moretti

2002

EPJ direct

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Heavy charged Higgs bosons (H ± ) of a Type II 2-Higgs Doublet Model (2HDM) can be detected at future electron-positron Linear Colliders (LCs) even when their mass is larger than half the collider energy. The single Higgs mode e + e − → tbH − + c.c. → 4b + jj + ℓ + p miss T (where j represents a jet and with ℓ = e, µ) contributes to extend the discovery reach of H ± states into the mass region M H ± > ∼ √ s/2, where the well studied pair production channel e + e − → H − H + is no longer available. With a technique that allows one to reconstruct the neutrino four-momentum in the decay t → bW + → bℓ + ν, one can suppress the initially overwhelming main irreducible background due to e + e − → ttbb (via a gluon splitting into bb pairs) to a negligible level. However, for currently foreseen luminosities, one can establish a statistically significant H ± signal only over a rather limited mass region, of 20 GeV or so, beyond M H ± ≈ √ s/2, for very large or very small values of tan β and provided high b-tagging efficiency can be achieved.

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Invariance of domain in o-minimal structures

Abstract: The aim of this paper is to prove the theorem on invariance of domain in an arbitrary o-minimal structure. We do not make use of the methods of algebraic topology and the proof is based merely on some basic facts about cells and cell decompositions.

Cited by 5 publications

References 2 publications

The Monte Carlo Event Generator AcerMC version 1.0 with interfaces to PYTHIA 6.2 and HERWIG 6.3

The Monte Carlo Event Generator AcerMC version 1.0 with interfaces to PYTHIA 6.2 and HERWIG 6.3

MC-TESTER v. 1.23: A universal tool for comparisons of Monte Carlo predictions for particle decays in high energy physics

Detection of heavy charged Higgs bosons at future Linear Colliders

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