A femtoscopic correlation analysis tool using the Schrödinger equation (CATS)

Mihaylov, Dimitar Lubomirov; Sarti, Valentina Mantovani; Arnold, O.; Fabbietti, L.; Hohlweger, B.; Mathis, A. M.

doi:10.1140/epjc/s10052-018-5859-0

Cited by 61 publications

(37 citation statements)

References 77 publications

(131 reference statements)

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“…The particle emitting source is found to be very small in pp and p+Pb collisions at the LHC [38,39], that is of the order of 1 fm. These values are evaluated by using known interactions, with pp and K + p as benchmarks [35].…”

Section: Experiments Forknmentioning

confidence: 98%

“…The hyperon-nucleon (Y N ) interaction can be tested experimentally via scattering experiments employing secondary hyperon beams [196][197][198], impinging on hydrogen targets, or by means of the measurement of the correlation in the momentum space for hyperon-proton (Y p) pairs produced at colliders exploiting the femtoscopy technique [19,38,39,199].…”

Section: Experimental Searchesmentioning

confidence: 99%

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Strangeness in nuclei and neutron stars

Tolós

Fabbietti

2020

Progress in Particle and Nuclear Physics

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188

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We review the present status of the experimental and theoretical developments in the field of strangeness in nuclei and neutron stars. We start by discussing theKN interaction, that is governed by the presence of the Λ(1405). We continue by showing the two-pole nature of the Λ(1405), and the production mechanisms in photon-, pion-, kaon-induced reactions as well as proton-proton collisions, while discussing the formation ofKN N bound states. We then move to the theoretical and experimental analysis of the properties of kaons and antikaons in dense nuclear matter, paying a special attention to kaonic atoms and the analysis of strangeness creation and propagation in nuclear collisions. Next, we examine the φ meson and the advances in photoproduction, protoninduced and pion-induced reactions, so as to understand its properties in dense matter. Finally, we address the dynamics of hyperons with nucleons and nuclear matter, and the connection to the phases of dense matter with strangeness in the interior of neutron stars.

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Section: Experiments Forknmentioning

confidence: 98%

Section: Experimental Searchesmentioning

confidence: 99%

Strangeness in nuclei and neutron stars

Tolós

Fabbietti

2020

Progress in Particle and Nuclear Physics

Self Cite

188

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“…The source is assumed to be isotropic with a Gaussian profile of radius r 0 . The resulting Schrödinger equation is then solved with the CATS [53].…”

Section: Genuine Correlation Functionmentioning

confidence: 99%

“…The extracted p-p, p-, and -correlations have been compared to the predicted function obtained by solving the Schrödinger equation exactly by employing the Argonne v 18 potential [52] for p-p pairs and different scattering parameters available in the literature for p-and -pairs. The predictions for the correlation function used to fit the data are obtained with the newly developed CATS framework [53]. A common source with a constant size is assumed and the value of the radius is extracted.…”

Section: Introductionmentioning

confidence: 99%

p−p, p−Λ , and Λ−Λ correlations studied via femtoscopy in <

Acharya¹,

Adamová²,

Adolfsson³

et al. 2019

Phys. Rev. C

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We report on the first femtoscopic measurement of baryon pairs, such as p-p, p-, and-, measured by ALICE at the Large Hadron Collider (LHC) in proton-proton collisions at √ s = 7 TeV. This study demonstrates the feasibility of such measurements in pp collisions at ultrarelativistic energies. The femtoscopy method is employed to constrain the hyperon-nucleon and hyperon-hyperon interactions, which are still rather poorly understood. A new method to evaluate the influence of residual correlations induced by the decays of resonances and experimental impurities is hereby presented. The p-p, p-, and-correlation functions were fitted simultaneously with the help of a new tool developed specifically for the femtoscopy analysis in small colliding systems: Correlation Analysis Tool using the Schrödinger equation (CATS). Within the assumption that in pp collisions the three particle pairs originate from a common source, its radius is found to be equal to r 0 = 1.125 ± 0.018 (stat) +0.058 −0.035 (syst) fm. The sensitivity of the measured p-correlation is tested against different scattering parameters, which are defined by the interaction among the two particles, but the statistics is not sufficient yet to discriminate among different models. The measurement of the-correlation function constrains the phase space spanned by the effective range and scattering length of the strong interaction. Discrepancies between the measured scattering parameters and the resulting correlation functions at LHC and RHIC energies are discussed in the context of various models.

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“…The model correlation function, Cðk Ã Þ theoretical , is evaluated using the CATS framework [47]. The λ parameters obtained for each analyzed dataset are reported in each panel of Figs.…”

mentioning

confidence: 99%

Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC

Acharya¹,

Adamová²,

Adhya³

et al. 2020

Phys. Rev. Lett.

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The study of the strength and behavior of the antikaon-nucleon (KN) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The femtoscopic measurements of the correlation function at low pair-frame relative momentum of (K þ p ⊕ K −p) and (K − p ⊕ K þp) pairs measured in pp collisions at ffiffi ffi s p ¼ 5, 7, and 13 TeV are reported. A structure observed around a relative momentum of 58 MeV=c in the measured correlation function of (K − p ⊕ K þp) with a significance of 4.4σ constitutes the first experimental evidence for the opening of the ðK 0 n ⊕ K 0n Þ isospin breaking channel due to the mass difference between charged and neutral kaons. The measured correlation functions have been compared to Jülich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relative momenta presented in this work prove femtoscopy to be a powerful complementary tool to scattering experiments and provide new constraints above theKN threshold for low-energy QCD chiral models.

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A femtoscopic correlation analysis tool using the Schrödinger equation (CATS)

Cited by 61 publications

References 77 publications

Strangeness in nuclei and neutron stars

Strangeness in nuclei and neutron stars

p−p, p−Λ , and Λ−Λ correlations studied via femtoscopy in <

Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC

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