Correlation femtoscopy of multiparticle processes

Lednický, R.

doi:10.1134/1.1644010

Cited by 44 publications

(53 citation statements)

References 87 publications

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“…Such correlations occur due to final state Coulomb and strong interaction and are sensitive to possible differences of the freezeout hypersurfaces of different particle species [48]. In the present analysis, correlation functions for a number of particle combinations have been presented for the first time (p − Λ,π − Ξ).…”

Section: Non-identical Particle Correlationsmentioning

confidence: 96%

Correlations and fluctuations

Appelshäuser¹

2004

J. Phys. G: Nucl. Part. Phys.

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Abstract. New results on particle correlations and event-by-event fluctuations presented at Quark Matter 2004 are reviewed. Event-by-event fluctuationsNon-statistical event-by-event fluctuations have been proposed as a possible signature for the QCD phase transition [1,2]. The passage of the system close to the critical point of the QCD phase diagram might be indicated by a non-monotonic evolution of fluctuations as function of beam energy. These exciting predictions triggered an extensive study of event-by-event fluctuations at SPS and at RHIC. Fluctuations of the mean transverse momentumThe existence of non-statistical event-by-event fluctuations of the mean transverse momentum M pt at SPS and RHIC is by now well established. However, these dynamical fluctuations are small in central collisions, typically about 1% of the inclusive mean transverse momentum p t , and only weakly depending on √ s N N , see Fig.1 (left panel) [3,4]. This value is roughly compatible with the extrapolation of fluctuation measurements in p-p collisions [5] under the assumption of an independent superposition of particle sources in A-A. In particular, no indication for a non-monotonic beam energy dependence has been found so far. Despite the absence of a 'smoking gun' signature for the phase transition or the critical point, the systematic study of M pt fluctuations gives valuable insight into the particle production mechanism and the dynamic evolution of the system which cannot be extracted from inclusive distributions. A quantitative study requires an appropriate formalism which facilitates a comparison of results among different experiments and to theory. Presently, an unfortunate situation has arisen: Practically each experiment uses different measures for fluctuations, see [4,6,7,8,9,10]. These measures have very different sensitivities to particular experimental conditions, such as track quality cuts, tracking efficiency, and acceptance. In this sense, measures which are most closely related to single and two-particle densities appear preferable since they are the least sensitive to trivial efficiency effects [9]. In this situation, it is mandatory that

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Section: Non-identical Particle Correlationsmentioning

confidence: 96%

Correlations and fluctuations

Appelshäuser¹

2004

J. Phys. G: Nucl. Part. Phys.

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“…One can inspect recent reviews [32,33,34] for a number of important topics that are not touched here, such as non-Gaussian tails, imaging techniques, correlations of penetrating probes, comparison of different colliding systems or spin correlations.…”

Section: Introductionmentioning

confidence: 99%

“…Thus the effect of the Coulomb interaction dominates the correlations of charged particles at very small relative momenta (of the order of the inverse Bohr radius |a| −1 of the two-particle system), respectively suppressing or enhancing the production of particles with like or unlike charges. Though the FSI effect complicates the correlation analysis, it is an important source of information allowing for the coalescence femtoscopy (see, e.g., [17,18,19,20]), the correlation femtoscopy with unlike particles [14,15,16] including the access to the relative space-time asymmetries in particle production [21,22,23,24,25,26,27,28,29,30,31,32] and a study of strong interactions between specific particles [28,31,32].…”

Section: Introductionmentioning

confidence: 99%

Correlation femtoscopy

Lednický¹

2006

Nuclear Physics A

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“…Generally, the correlations are measured as a function of pair relative momenta four vector q or rather its invariant form q inv = q 2 0 − |q| 2 . The 3D correlation analysis can provide information about both the form of the emitting source and the duration of the emission [27,28]. Here the momentum correlation functions are analyzed in terms of the out, side and longitudinal components of the relative momentum vector q = {q out , q side , q long }, where q out and q side denote the transverse components of the vector q, and the direction of q out is parallel to the transverse component of the pair three-momentum.…”

Section: Long-range and Femtoscopy Correlationsmentioning

confidence: 99%

Proton-proton collisions at ultra-relativistic energies in quark-gluon string model

Bravina

Bleibel

Malinina

et al. 2014

EPJ Web of Conferences

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Abstract. The microscopic Monte Carlo quark-gluon string model (QGSM) is employed to study particle production in ultrarelativistic proton-proton collisions. The model is based on Reggeon Field theory accomplished by string phenomenology. Various observables, including multiplicity, rapidity and transverse momentum spectra, short-range, long-range and femtoscopy correlations, are described quite well in a wide span of the collision energy. Predictions are made for pp collisions at √ s = 14 TeV.

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Correlation femtoscopy of multiparticle processes

Cited by 44 publications

References 87 publications

Correlations and fluctuations

Correlations and fluctuations

Correlation femtoscopy

Proton-proton collisions at ultra-relativistic energies in quark-gluon string model

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