Hadronic diffractive cross sections and the rise of the total cross section

Schüler, G.; Sjöstrand, Torbjörn

doi:10.1103/physrevd.49.2257

Cited by 109 publications

(135 citation statements)

References 62 publications

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“…Higher diffractive topologies, such as central diffraction, are currently neglected. In the following, the elastic and diffractive cross sections and event characteristics are described, as given in the model by Schuler and Sjöstrand [Sch94,Sch93a]. The non-diffractive component is identified with the 'minimum bias' physics already mentioned, a practical but not unambiguous choice.…”

Section: Hadron-hadron Interactionsmentioning

confidence: 99%

“…The form of these parameterizations is given in ref. [Sch94], with explicit numbers for the pp/pp case. Pythia also contains similar parameterizations for πp (assumed to be same as ρp and ωp), φp, J/ψp, ρρ (ππ etc.…”

Section: Hadron-hadron Interactionsmentioning

confidence: 99%

“…Donnachie-Landshoff for total cross section [Don92], and SchulerSjöstrand for elastic and diffractive cross sections [Sch94,Sch93a]. MSTP(32) : (D=8) Q 2 definition in hard scattering for 2 → 2 processes.…”

Section: Notementioning

confidence: 99%

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PYTHIA 6.4 physics and manual

Sjöstrand

Mrenna

Skands

2006

J. High Energy Phys.

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9,615

10,151

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The Pythia program can be used to generate high-energy-physics 'events', i.e. sets of outgoing particles produced in the interactions between two incoming particles. The objective is to provide as accurate as possible a representation of event properties in a wide range of reactions, with emphasis on those where strong interactions play a rôle, directly or indirectly, and therefore multihadronic final states are produced. The physics is then not understood well enough to give an exact description; instead the program has to be based on a combination of analytical results and various QCDbased models. This physics input is summarized here, for areas such as hard subprocesses, initial-and final-state parton showers, beam remnants and underlying events, fragmentation and decays, and much more. Furthermore, extensive information is provided on all program elements: subroutines and functions, switches and parameters, and particle and process data. This should allow the user to tailor the generation task to the topics of interest.

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Section: Hadron-hadron Interactionsmentioning

confidence: 99%

Section: Hadron-hadron Interactionsmentioning

confidence: 99%

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PYTHIA 6.4 physics and manual

Sjöstrand

Mrenna

Skands

2006

J. High Energy Phys.

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9,615

10,151

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“…Soft diffraction is implemented within a Regge-based Pomeron model to generate the cross section and the diffractive mass and momentum transfer [43,44] with some empirical corrections to cover the full phase space [2]. The soft diffraction model is extended in PYTHIA8 with additional perturbative Pomeron-proton scattering using HERA diffractive parton distribution functions (PDFs) [45].…”

Section: Comparison With Other Minimum Bias Modelsmentioning

confidence: 99%

EPOS LHC: Test of collective hadronization with data measured at the CERN Large Hadron Collider

et al. 2015

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EPOS is a Monte Carlo event generator for minimum bias hadronic interactions, used for both heavy ion interactions and cosmic ray air shower simulations. Since the last public release in 2009, the Large Hadron Collider (LHC) experiments have provided a number of very interesting data sets comprising minimum bias p-p, p-Pb, and Pb-Pb interactions. We describe the changes required to the model to reproduce in detail the new data available from the LHC and the consequences in the interpretation of these data. In particular we discuss the effect of the collective hadronization in p-p scattering. A different parametrization of flow has been introduced in the case of a small volume with high density of thermalized matter (core) reached in p-p compared to large volume produced in heavy ion collisions. Both parametrizations depend only on the geometry and the amount of secondary particles entering in the core and not on the beam mass or energy. The transition between the two flow regimes can be tested with p-Pb data. EPOS LHC is able to reproduce all minimum bias results for all particles with transverse momentum from p t = 0 to a few GeV/c.

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“…The excitation of the strings is due to single or double diffractive interactions which can be understood and parametrized in the framework of Regge theory (see e.g. [11]). These nonperturbative processes account for the major part of the total cross sections at CERN-SPS energies or higher, √ s > 20 GeV.…”

mentioning

confidence: 99%

Inverse slope systematics in high-energy p+p and Au+Au reactions

Dumitru

Spieles

1999

Physics Letters B

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We employ the Monte-Carlo PYTHIA to calculate the transverse mass spectra of various hadrons and their inverse slopes T * at m T −m = 1.5−2 GeV in p+p reactions at √ s = 200 GeV. Due to (multiple) minijet production T * in general increases as a function of the hadron mass. Moreover, the T * (m) systematics has a "discontinuity" at the charm threshold, i.e. the inverse slope of D-mesons is much higher than that of non-charmed hadrons and even of the heavier Λ C baryon. The experimental observation of this characteristic behaviour in Au+Au collisions would indicate the absence of c-quark rescattering. In contrast, the assumption of thermalized partons and hydrodynamical evolution would lead to a smoothly increasing T * (m), without discontinuity at the charm threshold. The degree of collective transverse flow, indicated by the slope of the T * (m) systematics, depends strongly on whether kinetic equilibrium is maintained for some time after hadronization or not. † Supported by AvH Foundation and DAAD.

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Hadronic diffractive cross sections and the rise of the total cross section

Cited by 109 publications

References 62 publications

PYTHIA 6.4 physics and manual

PYTHIA 6.4 physics and manual

EPOS LHC: Test of collective hadronization with data measured at the CERN Large Hadron Collider

Inverse slope systematics in high-energy p+p and Au+Au reactions

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