Formation of light (anti)nuclei

Tjemsland, J.

doi:10.22323/1.392.0006

Cited by 7 publications

(9 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar expression has been derived for (anti)helion and (anti)triton. This model reproduces well various experimental data on antinucleus production in 𝑒 + 𝑒 − , 𝑝 𝑝 and 𝑝𝑁 collisions [1][2][3][4].…”

Section: Pos(ichep2022)1165supporting

confidence: 82%

“…Some event generators have implemented a (semi) classical description of the space-time evolution of the cascade. One can thus in principle take into account space-time correlations by evaluating d 3 𝑁 𝑑 d𝑃 3…”

Section: Space-time Correlations and Going Beyond The Equal-time Appr...mentioning

confidence: 99%

“…where D (3) ( ì 𝑞, ì 𝑟) is the deuteron Wigner function. Even if it is trivial to compute D numerically for any given wave function, one should use either a Gaussian or a two-Gaussian wave function [1], because a different choice will necessarily lead to negative coalescence probabilities [5].…”

Section: Space-time Correlations and Going Beyond The Equal-time Appr...mentioning

confidence: 99%

See 2 more Smart Citations

Nuclear coalescence, collective behaviour and emission volume in small interacting systems

Tjemsland¹,

M.²,

Ostapchenko³

2022

Proceedings of 41st International Conference on High Energy Physics — PoS(ICHEP2022)

View full text Add to dashboard Cite

The production of light nuclei and antinuclei in particle collisions can be described as the coalescence of final state nucleons that are close in phase space. In heavy ion collisions, it is usually assumed that the formation probability is controlled by the size of the interaction region, while nucleon momentum correlations are either neglected or treated as a collective effect. Interestingly, recent experimental data on nucleus and hadron production in 𝑝 𝑝 collisions at LHC show evidence for such collective behaviour. Here, however, we argue that such data are naturally explained using QCD inspired event generators if both nucleon momentum correlations and the size of the emission volume of nucleons are considered. In order to consider both effects simultaneously, we employ a per-event coalescence model based on the Wigner function representation of the nucleus state. The model predicts the size and 𝑝 𝑇 dependence of the source volume measured at LHC, and it has therefore no free parameters. Finally, we comment on the validity of the underlying assumptions of the femtoscopy framework in small interacting systems and its relation to nuclear coalescence.

show abstract

Section: Pos(ichep2022)1165supporting

confidence: 82%

Section: Space-time Correlations and Going Beyond The Equal-time Appr...mentioning

confidence: 99%

Section: Space-time Correlations and Going Beyond The Equal-time Appr...mentioning

confidence: 99%

See 1 more Smart Citation

Nuclear coalescence, collective behaviour and emission volume in small interacting systems

Tjemsland¹,

M.²,

Ostapchenko³

2022

Proceedings of 41st International Conference on High Energy Physics — PoS(ICHEP2022)

View full text Add to dashboard Cite

show abstract

“…2 (see Refs. [8,16,17,19] and references therein for a discussion of the experimental data and the fitting procedures). It is clear that the numerical values of σ are consistent with being constant and equal to (1.0 ± 0.1) fm within the theoretical and experimental uncertainties.…”

Section: Selected Resultsmentioning

confidence: 99%

AAfrag 2.01: Interpolation routines for Monte Carlo results on secondary production including light antinuclei in hadronic interactions

M.¹,

Ostapchenko²,

Tjemsland³

2022

Preprint

View full text Add to dashboard Cite

Light antinuclei, like antideuteron and antihelium-3, are ideal probes for new, exotic physics because their astrophysical backgrounds are suppressed at low energies. In order to exploit fully the inherent discovery potential of light antinuclei, a reliable description of their production cross sections in cosmic ray interactions is crucial. We provide therefore the cross sections of antideuteron and antihelium-3 production in pp, pHe, Hep, HeHe, pp and pHe collisions at energies relevant for secondary production in the Milky Way, in a tabulated form which is convinient to use. These predictions are based on QGSJET-II-04m and the state of the art coalescence model WiFunC, which evaluates the coalesence probability on an event-by-event basis, including both momentum correlations and the dependence on the emission volume. In addition, we comment on the importance of a Monte Carlo description of the antideuteron production and on the use of event generators in general. In particular, we discuss the effect of two-particle momentum correlations provided by Monte Carlo event generators on antinuclei production.

show abstract

“…[3,4] (see also Ref. [13]). We will be using the abbreviation WiFunC (Wigner Functions with Correlations) for this model.…”

Section: The Wifunc Modelmentioning

confidence: 97%

Formation models for cosmic ray antinuclei

Tjemsland¹,

Kachelrieß²,

Ostapchenko³

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

Self Cite

View full text Add to dashboard Cite

Formation of light (anti)nuclei

Cited by 7 publications

References 30 publications

Nuclear coalescence, collective behaviour and emission volume in small interacting systems

Nuclear coalescence, collective behaviour and emission volume in small interacting systems

AAfrag 2.01: Interpolation routines for Monte Carlo results on secondary production including light antinuclei in hadronic interactions

Formation models for cosmic ray antinuclei

Contact Info

Product

Resources

About