Influence of resonances on Bose-Einstein correlations of identical pions

Lednický, R.; Progulova, T. B.

doi:10.1007/bf01482593

Cited by 32 publications

(27 citation statements)

References 16 publications

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“…[10], the analysis of the 30% most central collisions restricted to year 2004 data uses looser purity cuts, thus yielding substantially smaller λ. Additional dilution of the correlation strength is expected from the φ → K + K − decays, which is, however, limited by the φ decay length of ∼11 fm in PCMS [19]. Calculations based on the core-halo model [20] employing the STAR φ/K − ratio [21] yields a maximum 15%-20% decrease in λ at low transverse momenta.…”

Section: K T Dependencementioning

confidence: 99%

Freeze-out dynamics via charged kaon femtoscopy insNN=200GeV central Au + Au collisions

Adamczyk¹,

Adkins²,

Agakishiev³

et al. 2013

Phys. Rev. C

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We present measurements of three-dimensional correlation functions of like-sign, low-transverse-momentum kaon pairs from √ s NN = 200 GeV Au + Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon source function. The latter was found to have a three-dimensional Gaussian shape and can be adequately reproduced by Therminator event-generator simulations with resonance contributions taken into account. Compared to the pion one, the kaon source function is generally narrower and does not have the long tail along the pair transverse momentum direction. The kaon Gaussian radii display a monotonic decrease with increasing transverse mass m T over the interval of 0.55 m T 1.15 GeV/c 2 . While the kaon radii are adequately described by the m T -scaling in the outward and sideward directions, in 034906-2 FREEZE-OUT DYNAMICS VIA CHARGED KAON . . . PHYSICAL REVIEW C 88, 034906 (2013) the longitudinal direction the lowest m T value exceeds the expectations from a pure hydrodynamical model prediction.

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Section: K T Dependencementioning

confidence: 99%

Freeze-out dynamics via charged kaon femtoscopy insNN=200GeV central Au + Au collisions

Adamczyk¹,

Adkins²,

Agakishiev³

et al. 2013

Phys. Rev. C

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“…With these essential caveats in mind one finds that the distortion of the two-particle correlation function due to resonance decay leads to two obvious effects: ( In hydrodynamical studies of multiparticle production processes one considers reso- 19 For experimental estimates of resonances cf. refs.…”

Section: Final State Interactions Through Resonancesmentioning

confidence: 99%

Boson interferometry in high-energy physics

2000

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Intensity interferometry and in particular that due to Bose Einstein correlations (BEC) constitutes at present the only direct experimental method for the determination of sizes and lifetimes of sources in particle and nuclear physics. The measurement of these is essential for an understanding of the dynamics of strong interactions which are responsible for the existence and properties of atomic nuclei.Moreover a new state of matter, quark matter, in which the ultimate constituents of matter move freely, is within the reach of present accelerators or those under construction. The confirmation of the existence of this new state is intimately linked with the determination of its space-time properties. Furthermore BEC provides information about quantum coherence which lies at the basis of the phenomenon *

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“…frame of two identical pions at small value of q inv is listed in Table I also. Here p d is the momentum of the decay pion in the resonance rest frame [26], m π is the pion mass and Γ is the decay width. The pions from the decays of rather long-lived resonances ω and K * cause appearance of the exponential tails in the pion emission function, which distorts the Gaussian-like shape of the CF, see Fig.…”

Section: > (Gevmentioning

confidence: 99%

“…By fitting the corresponding CFs to a single Gaussian one cannot describe the narrow peak produced by pions from the resonance decays at low q inv . On the other hand, using the double-Gaussian fitting procedure similar to the one suggested in [26] CF double (q inv )…”

Section: > (Gevmentioning

confidence: 99%

Study of ππ correlations at RHIC and LHC energies in pp collisions within the Quark-Gluon String Model

Nilsson

Malinina

Bleibel

et al. 2011

Phys. Part. Nuclei Lett.

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The Quark Gluon String Model (QGSM) reproduces well the global characteristics of the pp collisions at RHIC and LHC, e.g., the pseudorapidity and transverse momenta distributions at different centralities. The main goal of this work is to employ the Monte Carlo QGSM for description of femtoscopic characteristics in pp collisions at RHIC and LHC. The study is concentrated on the low multiplicity and multiplicity averaged events, where no collective effects are expected. The different procedures for fitting the one-dimensional correlation functions of pions are studied and compared with the space-time distributions extracted directly from the model. Particularly, it is shown that the double Gaussian fit reveals the contributions coming separately from resonances and from directly produced particles. The comparison of model results with the experimental data favors decrease of particle formation time with rising collision energy.

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Influence of resonances on Bose-Einstein correlations of identical pions

Cited by 32 publications

References 16 publications

Freeze-out dynamics via charged kaon femtoscopy insNN=200GeV central Au + Au collisions

Freeze-out dynamics via charged kaon femtoscopy insNN=200GeV central Au + Au collisions

Boson interferometry in high-energy physics

Study of ππ correlations at RHIC and LHC energies in pp collisions within the Quark-Gluon String Model

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