On the sensitivity of nucleon-nucleon correlations to the form of short-range potential

Gmitro, M.; Kvasil, J.; Lednický, R.; Lyuboshitz, V. L.

doi:10.1007/bf01598029

Cited by 29 publications

(27 citation statements)

References 4 publications

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“…(2) with substitution ' l/J = 'l/JPIP2(X) --+ 'l/J-k*(r*): (15) In the same way one can easily find the form of the correlation function of identical bosons. We can see that the another size-dependent Coulomb factor Be f:= Ae appears due to the effect of symmetrization, (17) The Coulomb factor Be on the condition (r*) Iial « 1 has to coincide with Ae at k*(r*) « 1. In the limit (r*)/lal--+ 0 they are both equal to the Coulomb factor Ae(rJ).…”

mentioning

confidence: 88%

Coulomb corrections for interferometry analysis of expanding hadron systems

Sinyukov

Lednický

Akkelin³

et al. 1998

Physics Letters B

180

120

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The problem of the Coulomb corrections to the two-boson corre lation functions for the systems formed in ultra-relativistic heavy ion collisions is considered for large effective system volumes. The modi fication of the standard zero-distance correction (so called Gamow or Coulomb factor) has been proposed for such a kind of systems. For the 1r+1r+ and [(+ [(+ correlation functions the analytical calculations of the Coulomb correction are compared with the exact numerical re sults. "Permanent address: Institute for Theoretical Physics, ~2~21~3, Metrologicheskaya 14b, Ukraine.

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mentioning

confidence: 88%

Coulomb corrections for interferometry analysis of expanding hadron systems

Sinyukov

Lednický

Akkelin³

et al. 1998

Physics Letters B

180

120

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“…In collisions involving heavy nuclei, the characteristic separation of the emission points, r * , can be considered substantially larger than the range of the strong-interaction potential. The FSI contribution is then independent of the actual potential form and can be calculated analytically with the help of corresponding scattering ampli-tudes only 34 . At small k * , it is basically determined by the s-wave scattering amplitudes f S (k * )…”

Section: S(+)mentioning

confidence: 99%

Measurement of interaction between antiprotons

Adamczyk

Adkins

Agakishiev

et al. 2015

Nature

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One of the primary goals of nuclear physics is to understand the force between nucleons, which is a necessary step for understanding the structure of nuclei and how nuclei interact with each other. Rutherford discovered the atomic nucleus in 1911, and the large body of knowledge about the nuclear force since acquired was derived from studies made on nucleons or nuclei. Although antinuclei up to antihelium-4 have been discovered 1 and their masses measured, we have no direct knowledge of the nuclear force between antinucleons. Here, we study antiproton pair correlations among data taken by the STAR experiment 2 at the Relativistic Heavy Ion Collider (RHIC) 3 and show that the force between two antiprotons is attractive. In addition, we report two key parameters that characterize the corresponding strong interaction: namely, the scattering length (f 0 ) and effective range (d 0 ). As direct information on the interaction between two antiprotons, one of the simplest systems of antinucleons, our result provides a fundamental ingredient for understanding the structure of more complex antinuclei and their properties.Although the theory of Quantum Chromodynamics (QCD) provides us with an understanding of the foundation of the nuclear force, this binding interaction in nuclei operates at low energy, where the force is strong and difficult to calculate directly from the theory. For that reason, a common parameterization of the effective interaction between nucleons is based on experimental measurements, and the corresponding parameterization for antinucleons remains undetermined. Ultra-relativistic nuclear collisions produce an energy density similar to that of the Universe microseconds after the Big Bang, and the high energy density creates a favourable environment for antimatter production. The abundantly produced antiprotons provide the opportunity to measure, for the first time, the parameters f 0 and d 0 of the strong nuclear force between antinucleons rather than nucleons.The technique used to probe the antiproton-antiproton interaction involves momentum correlations, and it resembles the space-time correlation technique used in Hanbury-Brown and Twiss (HBT) intensity interferometry. Since its invention for use in astronomy by Robert Hanbury-

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“…The FSI contribution to the correlation function is then independent of the actual potential form [14,90]. At small Q = 2k * , it is determined by the s-wave scattering amplitudes f S (k * ) at a given total spin S [14].…”

Section: Accessing Strong Interactionmentioning

confidence: 99%