Alternative formation model for antideuterons from dark matter

Dal, Lars A.; Raklev, Are

doi:10.1103/physrevd.91.123536

Cited by 15 publications

(20 citation statements)

References 66 publications

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“…In heavy-ion physics, formation of loosely bound systems are often used to determine the chemical freeze-out temperature in statistical hadronization models [375]. In PYTHIA 8.3, two deuteron formation models are available, the coalescence model [376,377] and the more sophisticated Dal-Raklev model [378]. Both models are implemented through the same configurable framework, with the Dal-Raklev model set as the default configuration.…”

Section: Deuteron Productionmentioning

confidence: 99%

A comprehensive guide to the physics and usage of PYTHIA 8.3

Bierlich¹,

Chakraborty²,

Desai³

et al. 2022

Preprint

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This manual describes the PYTHIA 8.3 event generator, the most recent version of an evolving physics tool used to answer fundamental questions in particle physics. The program is most often used to generate high-energy-physics collision "events", i.e. sets of particles produced in association with the collision of two incoming high-energy particles, but has several uses beyond that. The guiding philosophy is to produce and re-produce properties of experimentally obtained collisions as accurately as possible. The program includes a wide ranges of reactions within and beyond the Standard Model, and extending to heavy ion physics. Emphasis is put on phenomena where strong interactions play a major role.The manual contains both pedagogical and practical components. All included physics models are described in enough detail to allow the user to obtain a cursory overview of used assumptions and approximations, enabling an informed evaluation of the program output. A number of the most central algorithms are described in enough detail that the main results of the program can be reproduced independently, allowing further development of existing models or the addition of new ones.Finally, a chapter dedicated fully to the user is included towards the end, providing pedagogical examples of standard use cases, and a detailed description of a number of external interfaces. The program code, the online manual, and the latest version of this print manual can be found on the PYTHIA web

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Section: Deuteron Productionmentioning

confidence: 99%

A comprehensive guide to the physics and usage of PYTHIA 8.3

Bierlich¹,

Chakraborty²,

Desai³

et al. 2022

Preprint

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“…Few alternatives to the coalescence model have been suggested. Recently,the authors of [128] discussed a model in which the combination of an antinucleon pair with center-of-mass frame momentum difference k = | pp − pn| into an antideuteron,pn →dX, is a random event with a probability given by the ratio of the cross section of the corresponding scattering process as a function of k, to a normalization cross section, σpn →dX (k)/σ 0 . The normalization σ 0 is a free parameter to be fixed through calibration against experimental data, analogous to p 0 in the coalescence model.…”

Section: Alternatives To the Coalescence Modelmentioning

confidence: 99%

Review of the theoretical and experimental status of dark matter identification with cosmic-ray antideuterons

et al. 2016

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See paper for full list of authors - 67 pages, 20 figures; submitted to Physics ReportsInternational audienceRecent years have seen increased theoretical and experimental effort towards the first-ever detection of cosmic-ray antideuterons, in particular as an indirect signature of dark matter annihilation or decay. In contrast to indirect dark matter searches using positrons, antiprotons, or gamma-rays, which suffer from relatively high and uncertain astrophysical backgrounds, searches with antideuterons benefit from very suppressed conventional backgrounds, offering a potential breakthrough in unexplored phase space for dark matter. This article is based on the first dedicated cosmic-ray antideuteron workshop, which was held at UCLA in June 2014. It reviews broad classes of dark matter candidates that result in detectable cosmic-ray antideuteron fluxes, as well as the status and prospects of current experimental searches. The coalescence model of antideuteron production and the influence of antideuteron measurements at particle colliders are discussed. This is followed by a review of the modeling of antideuteron propagation through the magnetic fields, plasma currents, and molecular material of our Galaxy, the solar system, the Earth's geomagnetic field, and the atmosphere. Finally, the three ongoing or planned experiments that are sensitive to cosmic-ray antideuterons, BESS, AMS-02, and GAPS, are detailed. As cosmic-ray antideuteron detection is a rare event search, multiple experiments with orthogonal techniques and backgrounds are essential. Many theoretical and experimental groups have contributed to these studies over the last decade, this review aims to provide the first coherent discussion of the relevant dark matter theories that antideuterons probe, the challenges to predictions and interpretations of antideuteron signals, and the experimental efforts toward cosmic antideuteron detection

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“…One example is as a production mechanism for specific particles. Deuteron production has been modelled in the past using coalescence of particles close in momentum space, on the assumption that such particles have also been produced near each other in space-time [85]. This assumption breaks down in AA where particles are created over a much larger volume.…”

Section: Discussionmentioning

confidence: 99%

Hadronic rescattering in pA and AA collisions

2021

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In a recent article we presented a model for hadronic rescattering, and some results were shown for $$\mathrm {p}\mathrm {p}$$ p p collisions at LHC energies. In order to extend the studies to $$\mathrm {p}\mathrm {A}$$ p A and $$\mathrm {A}\mathrm {A}$$ A A collisions, the Angantyr model for heavy-ion collisions is taken as the starting point. Both these models are implemented within the general-purpose Monte Carlo event generator Pythia, which makes the matching reasonably straightforward, and allows for detailed studies of the full space–time evolution. The rescattering rate is significantly higher than in $$\mathrm {p}\mathrm {p}$$ p p , especially for central $$\mathrm {A}\mathrm {A}$$ A A collisions, where the typical primary hadron rescatters several times. We study the impact of rescattering on a number of distributions, such as $$p_{\perp }$$ p ⊥ and $$\eta $$ η spectra, and the space–time evolution of the whole collision process. Notably rescattering is shown to give a significant contribution to elliptic flow in $$\mathrm {XeXe}$$ XeXe and $$\mathrm {PbPb}$$ PbPb , and to give a nontrivial impact on charm production.

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Alternative formation model for antideuterons from dark matter

Cited by 15 publications

References 66 publications

A comprehensive guide to the physics and usage of PYTHIA 8.3

A comprehensive guide to the physics and usage of PYTHIA 8.3

Review of the theoretical and experimental status of dark matter identification with cosmic-ray antideuterons

Hadronic rescattering in pA and AA collisions

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